Additional Work of Audio Conference System of Bihar Legislative Assembly, Patna

BILL OF QUANTITY

Name of work :- Additional work of Audio Conference System of Bihar Legislative Assembly , Patna.

Sl. No. Particular Unit Qty Rate Amount

1(AR) SITC Of Amplifier 2 x 120 W Class-D amplification optimized for 70/100V high-impedance applications, Independent Loudspeaker EQ per output, Frequency Response 55 Hz - 20 kHz (+0/–3 dB, @ 1 W reference 1 kHz) or better, Dynamic Range 88 dB or better, Input Channels - 2 unbalanced, 2 balanced or better, Input Range –8 dBu to 22 dBu or better, Outputs - 2 or better, INDICATORS AND CONTROLS: Power LED - indicates power is on, blinking standby mode, Controls, Front Panel Power On/Off, Input Select (A/B), Treble/Bass Tone Controls (x2), Master Level. Controls, Rear Panel Amplifier Mode DIP switches, Loudspeaker EQ preset selector, Input Gain (A/B/Page), Output trims, Mains Voltage 100 VAC – 240 VAC (±10%, 50/60 Hz) or better (Recommended Make : Labgrupen, Martin Audio,Powersoft, BOSE, Mayer Sound) nos. 5 ₹ 189,322.00 ₹ 946,610.00

2(AR) SITC Of Speakers Full range IP55 rated indoor/outdoor surface mounted music loudspeaker. The loudspeaker shall meet the following performance criteria: Usable Frequency range (-10dB) of 70Hz to 19kHz; Power handling of 160 Watt peak; Nominal dispersion of 100°(H) × 100°(V); Sensitivity of 87 dB SPL and Max SPL of 109 dB SPL peak; Nominal impedance of 8 ohms and Integral multi-tap Transformer with selectable tap settings of 5/10/20/40W@70V & 100V or 30 watt. The loudspeaker system shall be comprised of a 4.5-inch woofer; enclosed in engineered-plastics and a powder-coated tamper-resistant steel grille. UL-1480 rated and EN54-24 compliant for Life safety/VA applications. Shall be packed in pairs. (Recommended Make : Labgrupen, Martin Audio,Powersoft, BOSE, Mayer Sound) nos. 33 ₹ 88,861.00 ₹ 2,932,413.00

3(AR) SITC of DSP Digital audio DSP with 32-bit fixed/floating-point DSP 456 MHz/ARM Cortex-A8 600 MHz processor or better with following features and specifications are required. The DSP shall have 12 balanced inputs and 8 balanced output channels for microphone or line-level analog audio signals, each independently controllable . The DSP shall contain 12 channels of acoustic echo cancellation (AEC), with multiple references, routable to analog and/or Dante® inputs. The DSP shall have Dante digital audio networking up to 64 x64 channels, an Ethernet connection for control and programming on an RJ-45 jack and VoIP connection for 2 lines, GPIO – 5x5 expandable general-purpose contro, PSTN and USB audio and 8 digital channels on an RJ-45 jack.It shall have IT web configuration page, USB Port – Micro-B or better USB for PC soft codecs with stereo input and output, ultra-low latency digital audio, Serial Port – 3-wire RS-232C (DTE) serial interface connection. It shall Supports remote zone controllers , PSTN (RJ-11) – Supports worldwide analog telephone connection, Dynamic Range > 115 dB, A-weighted 20 Hz – 20 kHz; THD : < 0.002 % or better ,Maximum Input Level +24 dBu; Phantom Power +48 VDC, 10 mA, selectable per input. The audio DSP shall include configurable signal processing, signal routing and mixing, equalization, filtering, dynamics, delay, conference room router, conference room combining, as well as control, monitoring, and diagnostic tools. The audio DSP shall control and proxy all expansion devices and other Dante endpoints. (Recommended Make : Baimp, Martin Audio,BOSE, Symmetrix, Mayer Sound) nos. 4 ₹ 720,021.00 ₹ 2,880,084.00

4(AR) SITC of 165 cm Display Display Size 165.0 & above cm., Resolution 3,840 X 2,160 (UHD) or Higher, Brightness - 500 Nit or better, Contrast Ratio 4,700:1, Pannel Type : 50Hz E-LED BLU, Audio Output 10W + 10W, Speaker Type 2CH (10W+10W), Input DP 1.2 (1),HDMI 2.0 (3), HDCP2.2, USB 2.0 x 1, Output Audio: Stereo Mini Jack, Duty Cycle -24/7, Power Consumption - 187.0 W/H OR LESS . Safety CE, UL & BIS , EMC-Class B Country of origin certificate from local authority of the same country of origin required to establish compliances under GFR144(x) (Recommended Make: Samsung, Panasonic, LG, Sony) nos. 5 ₹ 185,300.00 ₹ 926,500.00

5(AR) SITC Of Audio Cable 1 Pair 22 AWG stranded (7x30) TC conductors, Material : polypropylene insulation, paper wrap, twisted pair, overall Beldfoil® shield (100% coverage), 22 AWG stranded TC drain wire, Outer Jacket Material, cable laying with Pvc Pipe and use of GI Flexible (Approved Makes : Belden /Klotz/ Kramer,Krystal) Mtr 1640 ₹ 131.00 ₹ 214,840.00

6(AR) SITC of Speaker Cable 2 Conductor 16 AWG stranded (19x29) tinned copper conductors with polyolefin insulation, Riser, PVC jacket with ripcord.Max. Recommended Current [A] : 6.25 Amps per Conductor at 25ºC, Test Report Required, Complete as required. cable laying with Pvc Pipe and use of GI Flexible (Recommended Make List : Belden/Klotz/ Kramer, Krystal) Mtr 2450 ₹ 147.00 ₹ 360,150.00

7(AR) SITC of HDMI Cable 3 Feet USB C Cable with following specification True Plug–and–Play — No additional drivers needed, USB 2.0 High Speed (480Mbps) Standard, Construction — 1 pair 24AWG + 2 pair 22AWG + drain wire 24AWG, tinned copper braid, No External Power — Pulls power from source, Data Transfer Only — Not for charging, Buffers Incoming & Outgoing Signal, CM–c(ETL) Rated. cable laying with Pvc Pipe and use of GI Flexible (Recommended Makes : Belden/Extron/Kramer) nos. 5 ₹ 3,095.00 ₹ 15,475.00 950

8(AR) SITC of Crip type Connector Crimp-style shielded RJ-45 connector for conductors in a 26AWG to 22AWG twisted pair shilded cable with an overall insulation diameter of 1.40mm to 1.50mm. (Recommended Make: Extron, Kramer, Crestron or similar Make) nos. 800 ₹ 657.00 ₹ 525,600.00

(PartA) Say Rs. ₹ 8,801,672.00

Part B-(New Items)

1(NS) SITC of B1 Server for digital conference management Application he server shall be a standard 19-inch rack-mountable (2U) industrial-grade server, suitable for continuous operation in professional audio-visual and conference control environments. It shall be equipped with a minimum quad-core processor with base clock speed of 3.6 GHz or higher, at least 16 GB RAM, and enterprise-class storage consisting of solid-state drives configured in RAID-1 (minimum 500 GB effective capacity) along with additional internal backup storage of minimum 2 TB. The server shall support minimum two Gigabit Ethernet (RJ45) ports for segregated system, media, and service networks, standard USB ports, and HDMI/DVI video output interfaces. It shall operate on 100–240 V AC, 50/60 Hz power supply, be supplied with rack mounting accessories, and be fully compatible with digital conference management, audio networking, and control software applications nos. 1 955,200.00 ₹ 955,200.00

2(NS) SITC of SDI Video Matrix Switcher The system shall consist of a 19-inch, 1RU SDI video matrix switcher with 16 independent SD/HD/3G-SDI inputs and 16 SD/HD/3G-SDI outputs on 75 Ω BNC connectors. It shall support automatic detection and routing of SD, HD and 3G-SDI video formats with compliance to SMPTE standards (including SMPTE 259M, 292M, 296M, 372M, 424M and 425M), and support common resolutions including 1080p/1080i/720p/625i/525i formats. The unit shall provide front-panel and remote control via LAN (RJ45) and RS-422 interfaces and shall automatically equalize and reclock SDI signals to maintain signal integrity. It shall be powered from a dual supply arrangement with redundancy, operate on DC 12–24 V with power consumption not exceeding 15 W, and meet industrial environmental requirements for temperature and humidity. The deliverable shall include the matrix switcher with standard rack mount hardware nos. 1 765,340.00 ₹ 765,340.00

3(NS) SITC of DSP Controller Master Controller with Power Supply ; Programmable network controller with display which shall manage System parameters or scene selections ; Source Selection and Volume Controls ; Supports Upto 256 programmable Functions, Multi character backlit display, rogrammable functions over encoders / touch screen, Connectivity: Ethernet - 10 base 100 or better nos. 1 240,100.00 ₹ 240,100.00

4(NS) SITC of Wireless In-Ear Monitoring Set The wireless in-ear monitoring system shall comprise a rack-mountable UHF wireless transmitter, a compact bodypack receiver, and sound-isolating in-ear earphones, suitable for professional live sound, broadcast, or conferencing applications. The system shall support stereo or dual-mono (mix mode) audio transmission, operate within a wide tunable RF bandwidth (minimum 24 MHz), and allow multiple compatible channels for simultaneous operation. It shall provide a minimum operating range of 90 meters (line of sight) with stable RF performance, low noise, and minimal latency. The transmitter shall include balanced audio inputs with loop-through outputs, adjustable input level control, front-panel monitoring, and infrared synchronization for quick pairing with the receiver. The bodypack receiver shall feature a headphone output with volume control, high RF sensitivity, and operate on standard batteries with a minimum battery life of 5 hours. The supplied in-ear earphones shall be lightweight, ergonomically designed, and provide adequate sound isolation and clear audio reproduction suitable for monitoring. The complete system shall be supplied with antennas, power supply, rack accessories, and shall be backed by OEM warranty and technical support nos. 1 425,000.00 ₹ 425,000.00

5(NS) Volume Controller for speaker The speaker volume controller shall be a 40 Watt rating volume attenuator unit designed for use with 100 V line loudspeaker distribution systems. It shall provide an elegant, compact enclosure suitable for wall or panel mounting, with a rotary control offering 11 selectable positions including Max, nine attenuation steps in 3 dB increments (‐3 dB to ‐27 dB) and OFF, to enable precise volume adjustment for one or a group of speakers. The unit shall be capable of controlling speakers having a combined power handling up to 40 W, operate at 100 V line input, and shall be compatible with ceiling, wall, and panel speakers equipped with 100 V line matching transformers. The controller shall have a robust rotary switch mechanism, be compact in size nos. 15 33,200.00 ₹ 498,000.00

6(NS) Phono Jack to 3.5 mm Patch Cable 2 mtr The patch cable shall be a 2 metre long interconnect cable terminated at one end with a 6.35 mm (1/4″) mono phono jack and at the other end with a 3.5 mm stereo (or mono, as required) TRS connector, suitable for connecting audio sources such as mixers, amplifiers, playback devices, or personal audio equipment. The cable shall consist of high-quality oxygen-free copper conductors with shielding to minimize handling noise and electromagnetic interference, and the connectors shall be precision moulded or metal-shelled with strain relief for durability under frequent use. The assembly shall support low-noise, low-distortion analog audio transmission, be flexible for ease of routing, and have a 2 m overall length measured end-to-end excluding connector bodies, with an operating temperature range suitable for indoor AV installations. nos. 25 1,200.00 ₹ 30,000.00

DSR-26.1.4 7(NS) SITC of 10 KVA Online UPS Capacity (in kVA / kW) 10kVA/10kW 1-Phase Input / 1-Phase Output Technology and Capability Online Double ConversionTrue Online configuration with double conversion UPS & Zero transfer time. DSP Based System (Mandatory) DSP based control with advanced technology. Wide Input voltage Range Wide Input voltage range from (100 ~ 280VAC) Auto Restart & Battery Independent Auto restart capability with the Independent battery bank operation of the UPS. N+X Upto 4 Systems (Mandatory) Possibility of enhancing UPS capacity / redundancy by operating UPS in N+X Parallel.Redundant Configuration upto 4 units. Input facility -Phases / Wires Single-Phase / 2-Wire & Gnd (1Phase & Neutral + Ground) Nominal Voltage nos. 2 168,506.00 ₹ 337,012.00

200/208/220/230/240 VAC Nominal Voltage Range 200/208 (de-rating to 90%) : 100VAC~280 VAC 220/230/240 : 100Vac~280 VAC Nominal Input Frequency 50/60Hz ± 10Hz (Auto Selectable) Input Frequency Range 40 to 70 Hz Input Power Factor > 0.99(full load) Generator Compatibility to genset supply required Output Nominal Output voltage 200/208 /220 /230 /240 VAC Output Voltage Regulation ± 1% for linear load Nominal Output Frequency 50/60Hz ±0.05 Hz Output Frequency Regulation ± 0.1Hz Output Frequency Slew Rate < 1Hz/sec Output Wave Form Pure sine wave Output Voltage Distortion (THDu) < 3% for linear load. Crest Factor 3:1 On Full Load (Minimum) Output Short Circuit Protection Electronic Protection Efficiency (At Nominal Voltage & Resistive Load up to kW rating of UPS) Overall Efficiency (AC to AC) - Online (Double Conversion) Upto 95%(on 100% load) ECO Mode Efficiency 98% Overload Inverter Overload capacity <105%for Continuous,<105~<125for 2Min,<125~<150for 30Sec Display Panel (In-build LC Display & LED ) Measurements (On LCD) Input: Voltage & Frequency,Bypass:

Voltage & Frequency,Output: Voltage,frequency,Kilowatt & kVA,Battery: Remaining time & Battery Level Indicator,Load Percentage & Load Level Indicator,Ambient temperature. Fault Indication (On LCD) Abnormal I/P,I/P Fuse blown,Rectifier Abnormal,BUS start abnormal, Battery start abnormal, BUS start abnormal in battery mode, +BUS voltage too high & low, -BUS voltage too high & low, Inverter O/P voltage abnormal, Overload shutdown, Charge voltage too high, Damaged Batteries, Battery missing, Battery voltage to low & Over temperature Protection.

Indications (LED) Green & Red (For output & Fault) Setable data through (LCD) Inverter Voltage,Inverter Frequency, Frequency converter, ECO Mode, Overload alarm, Buzzer, Charging current, Battery Capacity, Battery String & Parallel ID, Alarms Audible Alarms Replace Battery,Overload warning & shutdown,High Temp,Low Battery,High Temp warning & shutdown Battery Backup / Battery Bank & Charger Backup Required 30 Mins. Backup on SMF Battery Interfaces Serial Communication RS232 Port (Mandatory) RS232 Port should be provided as standard in the UPS. USB port available (Mandatory) However there should be provision for USB port also in the UPS. REPO port available (Mandatory)However there should be provision for REPO port also in the UPS. Physical Normal Operating Temperature 0 to 40 deg C Type of Cooling Forced Air Noise Level should reduce with Load (Mandatory) < 50 dbA at 1 meter distance Form Factor Tower mountable Certifications Manufacturer QMS: As per ISO 9001: 2008 EMS: As per ISO 14001: 2004 OSHAS: As per ISO 18001: 2007 Product Safety Certifications (Mandatory) IEC 62040-1:2008 ESD: IEC61000-4-2: level4 RS : IEC61000-4-3: level3 EFT: IEC61000-4-4:level4 SURGE: IEC61000-4-5:level4 CS: IEC61000-4-6: level3 IEC61000-4-8 IEC 61000-2-2 EN 62040-2:2006 EN 61000-3-2:2009 EN 61000-3-3:2013 ROHS compliance UPS should be ROHS compliance

DSR-32.4.1 8(NS) 1.5 ton cassette AC Supply installation testing and commissioning of split type ceiling cassette air conditioning unit of capacity including indoor, outdoor unit fitted with rotary compressor, copper condenser and first charge refrigerant R410A/ecofriendly green gas only, cordless remote control, auto air swing louvers, connection copper lead wire between outdoor and indoor unit, connection copper lead wire upto 1.5 mtr., excluding connection copper pipe of required size, insulation, floor stand for outdoor unit, condense water outlet complete etc as required. Outdoor/indoor units should be of same make (brand). The cost includes contractor profit, labour cess, supply, transportation cost, installation, testing and commisioning cost. nos. 1 77,417.00 ₹ 77,417.00

DSR 9 Supply, installation, testing and commissioning of interconnecting copper refrigerant pipe work (19mm/13mm thick) duly insulated with elastomeric nitrile rubber type tubular insulation between indoor & outdoor units as per specifications. And exposed piping should be wrapped with glass woven cloth and lag coating for vapour barrier and weather protection. Joints Shall be covered with nitrile rubber tape of 3mm thick complete as per specification

31.14.2 Copper Pipe 9.5 mm O.D. wall thickness more than or equal to 0.8mm (Insulation -13 mm thick) (For 2 Ton AC) Meter 15.00 346.00 ₹ 5,190.00

31.14.4 Copper Pipe 15.9 mm O.D. wall thickness more than or equal to 0.8mm (Insulation -13 mm thick) (For 2 Ton AC) Meter 15.00 615.00 ₹ 9,225.00

10(AR) Providing and fixing of CPVC, 6Kg/cm2 drain water piping with fittings, support and insulated with 6 mm thick closed cell elastomeric nitrile rubber insulation complete as per specification

11(AR) Supply and fixing of 20/24" ready made M.S. prepainted wall stand structure suitable for 1.5/2.0 TR split AC Machine including all accessories Each 1.00 1,000.00 ₹ 1,000.00

12(AR) Supply and additional refrigerant charge of refrigerant R410/410A & equivalent Eco friendly green gas to compensate the additional piping done at site for all systems including testing commissioning as required. P/kg. 0.25 1,695.00 ₹ 423.75

13(AR) Supply and laying, testing & commissioning of following sizes of copper conductor Control cables on existing tray including fixing clamps & proper connections to equipment etc. complete as required.

14(NS) SITC of Goosneck mic Speaker Sir Supply of 12-inch gooseneck condenser microphone with desktop base suitable for speech and conferencing applications. The unit shall feature a cardioid polar pattern with a frequency response of 50 Hz – 17 kHz and a balanced, transformerless output to ensure high immunity to electromagnetic hum and RF interference over long cable runs. The microphone shall include programmable logic functions and on/off switch with LED indicator, a shock-mount system providing minimum 20 dB isolation from surface vibration noise, and a snap-fit foam windscreen, with associated desktop base and an attached cable of minimum 3 m length. The microphone shall require phantom power supply (11–52 V DC) and terminate in 3-pin XLR male output, with suitable mounting provisions for both desktop and permanent surface installation. The system shall be supplied complete with all necessary accessories nos. 2 75,537.00 ₹ 151,074.00

15(NS) RG11 Coxial Cable for Camera The coaxial cable shall be RG-11 type, 75-ohm impedance, specifically suitable for professional camera, broadcast video, and SD/HD-SDI signal transmission. The cable shall have a solid bare copper center conductor, low-loss foam polyethylene dielectric, and double shielding comprising bonded aluminum foil and high-coverage copper braid to ensure excellent signal integrity, low attenuation, and high resistance to electromagnetic interference over long cable runs. The outer jacket shall be durable, flexible, and suitable for indoor broadcast installations. The cable shall support SD-SDI, HD-SDI, and 3G-SDI video formats, with low signal loss over extended distances, and shall conform to relevant broadcast and coaxial cable standards Mtr. 200 185.00 ₹ 37,000.00

16(NS) 3 Core 2.5 Sqmm Electrical cable The electrical cable shall be a 3-core, 2.5 sq.mm copper conductor cable, suitable for power distribution in commercial and institutional installations. The conductors shall be multi-stranded electrolytic grade annealed copper, insulated with PVC/XLPE insulation rated for 650/1100 V, and color-coded for phase, neutral, and earth identification. The cable shall have an overall PVC sheathed outer jacket, resistant to heat, moisture, and abrasion, and suitable for concealed or surface wiring in conduits, trays, or trunking. The cable shall be designed for continuous operation at standard current ratings for 2.5 sq.mm conductors, conform to IS 694 / IS 7098 (as applicable) and relevant safety standards Mtr. 600 275.00 ₹ 165,000.00

17(NS) 3 Core 1.5 Sqmm Electrical cable The electrical cable shall be a 3-core, 1.5 sq.mm copper conductor cable, suitable for lighting and low-power electrical circuits in commercial and institutional installations. The conductors shall be multi-stranded electrolytic grade annealed copper, insulated with PVC or XLPE insulation rated for 650/1100 V, and color-coded for phase, neutral, and earth identification. The cable shall have an overall PVC sheathed outer jacket, resistant to heat, moisture, and abrasion, and suitable for installation in conduits, cable trays, or surface wiring. The cable shall conform to IS 694 / IS 7098 (as applicable) and relevant safety standards, be capable of continuous operation at the rated current for 1.5 sq.mm conductors Mtr. 1500 165.00 ₹ 247,500.00

18(NS) Modular wall-mount USB charging module The USB charging outlet shall be a modular wall-mount USB charging module suitable for integration into standard modular switchboard panels. The unit shall operate from 230 V AC, 50 Hz supply and provide a regulated 5 V DC USB output with a minimum total output current of 2 A for reliable charging of mobile devices and tablets. The faceplate shall be durable, fire-retardant material with a neat finish and shall include an LED indicator to show power/charging status. The USB charging port shall conform to applicable safety and electrical standards, provide over-current, over-voltage and short-circuit protection, be compatible with standard modular frames/plates, and be supplied complete with connection terminals, mounting hardware nos. 310 775.00 ₹ 240,250.00

19(1.21) Supplying and fixing of following sizes of medium class PVC conduit along with accessories in surface/ recess including cutting the wall and making good the same in case of recessed conduit as required.

20(DSR-4.1) SITC of Steel Tray for Cable Laying Supplying and installaton following size of perforated painted with powder coating M.S. cable trays with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with two numbers MS/GI Suspenders i/c base of suitable size MS/GI angle, bolts & nuts, painting suspenders, fastener etc as required.

150mm width X 50 mm depth X 1.6 mm thickness Meter 320 686.00 ₹ 219,520.00

SITC of Elctrical Items (DB for UPS Input & Output, Electrical cabling with USB Socket for each Seater, Electrical Cabling for UPS,

21(1.7) Wiring for circuit/ submain wiring alongwith earth wire with the following sizes of FRLS PVC insulated copper conductor, single core cable in surface/ recessed medium class PVC conduit as required.

1.7.5 2 X 10 sq. mm + 1 X 6 sq. mm earth wire Mtr 90 557.00 ₹ 50,130.00

22(2.13) Supplying and fixing following rating, 240/415 volts, "C" curve, miniature circuit breaker suitable for inductive loads of following poles in the existing MCB DB complete with connections, testing and commissioning etc. as required.

23(2.8) Supplying and fixing following way single pole & neutral, sheet steel, MCB distribution board, 240 volts, on surface/ recess, complete with tinned copper bus bar, neutral bus-bar, earth bar, din bar, interconnections, powder painted including earthing etc. as required. (But without MCB/RCCB/Isolator)

(2.8.6) 8 way, Double door nos. 2 2,591.00 ₹ 5,182.00

24 (1.57) Supplying and fixing suitable size GI box with modular plate and cover in front on surface or in recess, including providing and fixing 4 nos. 5 pin 5/6 amps modular socket outlet and 4 nos. 5/6 amps modular switch, connection etc. as required. Mtr 10 1,064.00 ₹ 10,640.00

25(NS) Electrical/RG11 cable laying Charges Mtr 2500 180.00 ₹ 450,000.00

26(NS) Supply, installation, testing and commissioning of Full range 2.25 to 3.5 inch or better IP35/IP55 rated surface mounted music and PA loudspeaker. The loudspeaker shall meet the following performance criteria: Frequency range (-10dB) of 83Hz to 19kHz or better; Power handling of 64 Watt peak or more; Nominal dispersion of 100°(H) × 80°(V) or better; Sensitivity of 84 dB SPL or more and Max SPL of 103 dB SPL peak or better; Nominal impedance of 16 ohms and Integral multi-tap Transformer with selectable tap settings of 2/4/8/16W@70V & 100V. The loudspeaker system shall be enclosed in engineered-plastics and a powder-coated steel grille. UL-1480 rated and EN54-24 compliant for Life safety/VA applications. nos. 84 68,300.00 ₹ 5,737,200.00

27(NS) Supply, installation, testing and commissioning of 9 U Rack wall mount 9 U Wall Mount with Front Glass Door with Lock + 1U Cable Manager-, Roof Mounted Fan Tray with 2 Fan , 230V AC, 1 Unit of 19" Mounted PDU with 4 Sockets of 5A Type 3 Pack of Hardware. nos. 2 8,500.00 ₹ 17,000.00

28(NS) Supply, installation, testing and commissioning of portable battery-powered design with wheels and a handle, a large ~15 inch woofer driving around 50 W RMS (≈400 W peak) of output, and supports wireless Bluetooth streaming (≈10 m range) plus AUX, USB and SD card playback; it includes two UHF wireless mics and additional wired mic/guitar inputs with adjustable volume/echo controls, FM radio, and vocal/audio recording, runs on a built-in rechargeable battery (~4000 mAh for ~3–4 hrs playtime), and offers multimedia connectivity for phones, TVs, laptops etc. all in one unit nos. 3 35,300.00 ₹ 105,900.00

29(NS) Supply, installation, testing and commissioning of heavy-duty floor mount display stand for 65″–98″ screens with ~110 kg load capacity typically features a steel construction with a stable base or trolley frame, VESA mounting support for large panels (often up to ~900 × 600 mm or similar), and the ability to safely hold heavy flat-panel displays up to around 110 kg, making it suitable for large LED/LCD/interactive displays in conference rooms, classrooms, or public spaces; many designs include integrated cable management, optional height adjustment or caster wheels for mobility, and all necessary mounting hardware for easy installation. nos. 1 38,500.00 ₹ 38,500.00

Elect.Executive Engineer,

Elect. Building. Div.No.3,

B.C.Deptt.,Patna.