e tender for procurement of 23 nos of microphones with speaker and camera units for the interactive displays placed at office of regional deputy commissioners zonal officers regional superintending engineers north centre south superintending engineer , sensor type: cmos 8m pixel; field of view: 120° diagonal, focus range: 0.5 m to infinity; supported resolutions: 3840×2160 2560 x 1440 1920 x 1080 1280 x 720 640 x 360; frame rates: 6, 7.5, 10, 15, 30 fps; video codecs: yuy2, mjpeg, nv12; zoom / presets: 5x eptz digital zoom, 2 preset positions; framing modes: smart framing (group/speaker/manual); people detection: up to 4.5 m range; image enhancements: auto white balance, auto exposure, noise reduction; remote control: mute, eptz camera, framing, presets, menu navigation; on-screen display (osd): framing, camera preset, mic, speaker, bluetooth; auto wake feature: hdmi-cec functionality; microphone array: 6 mems microphones (hexa beam forming); coverage angle: 120° audio pickup; pickup range: up to 6.0 m (3.0 m with face-focus beam forming); frequency response: 100 hz – 16 khz; audio dsp features: adaptive echo cancellation, noise reduction, dereverberation, self-volume balancer, face-focus, self-silence; usb type-c: usb 2.0 / 3.2 gen 1, uac 2.0, uvc 1.1, display link; hdmi: hdmi 1.4, hdcp 1.4, hdmi-cec (power/input); 3.5 mm audio jack stereo output (headphones / line out); bluetooth: version 5.0 (hfp, a2dp, avrcp, ble; codecs : cvsd, sbc, msbc); wi-fi: ieee 802.11b/g/n (2.4 ghz only), wpa/wpa2/wpa3-sae. , interface: usb 2.0 full speed, bluetooth, nfc, 3.5 mm headset jack (stereo out/monaural in); power consumption (max):2.5 w; power source: lithium-ion rechargeable battery, usb bus powered; operating environment: temperature: 0 - 40° c (32 - 104° f), humidity: 20 - 85% (no condensation); dimensions: 140 (w) × 43 (h) × 140 (d) mm;weight: 0.28 kg; accessories: usb cable, carrying case; other: auto standby energy-saving function, firmware update (transferred from a pc/m