In this series, we have EMP-91RL/YL/AL. Our EMP-91RL is a modern HD PTZ video conferencing camera with 5X/12X/20X optical zoom, Wide Angle 60.9¬ 84.5 degrees, 3.18~5Megapixel, high definition 1080p60/50, and ultra-high image quality. This video conferencing camera has a smooth, noise-free operation. It has pinpoint accuracy, high reliability, and long-term stability, and it needs no maintenance. RS232/485 is a serial port that can be used to send and receive data contact using many protocols. HDMI, 3G-SDI, USB3.0, and IP outputs are all available options. Total HD video stream over RTSP, TCP/IP, HTTP is possible thanks to H264/H.265, MJPEG compression. FEATURES-                   5X/12X/20X optical zoom can be chosen, 3.1~8.5Megapixels-                    HDMI, 3G-SDI, USB3.0, IP outputs, UVC control, POE optional-                    Supports H264/H.265, MJPEG compression enabling full HD video stream over RTSP, TCP/IP, HTTP. -                    Supports IR remote control, RS232/485 serial controls. -                    Supports VISCA and Pelco P/D protocol-                   9 preset positions by Visca, 200 preset positions by Pelco-                    Supports desktop Tripod, Pole, and ceiling mount. -                      SPECIFICATIONSCameraEMP-HD91YLEMP-HD91RLEMP-HD91ALImage Sensor1/2.5″ Image SensorEffective Pixels3.10 Megapixels3.10 Megapixels3.50 MegapixelsResolution 1080p60/50, 1080i60/50, 1080p30/25Signal SystemPAL/NTSCLens5X optical zoom    f=3.2mm(wide)~14.4 mm (far end) F2~F2.812X optical zoom      f=3.9mm(wide)~46.8mm (far end) F1.8～F2.820X optical zoom f=4.7mm(wide)~94.0 mm (far end)  F1.6~F2.8Horizontal View Angle84.5°（W）～23.9°（T）72.5°（W）～6.55°（T）60.9°（W）～3.2°（T）Pan355° (max. speed:80°/s)Tilt-30° to +90° (max. speed: 60°/s)Focus SystemAuto/ManualS/N Ratio≥50dbPreset Position9 preset positions by IR remote controller, 255 preset positions by Keyboard or PCMinimum Illumination0.1LuxExposure ControlAuto/Manual/Priority AE/Exposure Compensation/BrightShutter Speed1/1～1/10, 000sGainAuto/ManualWhite BalanceAuto/Manual/ATW/One-click/Indoor/OutdoorImage EffectFull colour/black and white/Electronic flipVideo Output HDHDMI, SDI, USB3.0, IPOther OutputLine InControl ProtocolSONY VISCA, PELCO P/DControl ModeRS-232C, RS-422/485Power12V DC(10.8～13.0V DC)Power ConsumptionMax. 30W (DC 12V)Operating Temperature0~40℃Storage Temperature-20-60℃Camera Dimensions（L）147 ×（W）147 ×（H）165 mmWeight870 gColourBlackAccessoriesDC 12V power adapter, IR Remote, Operation manual, RS-232C Cable, HDMI cable, USB Cable, Ceiling bracketCartonEach camera in a small carton, then 4pcs packaged in one large carton. CertificateISO/CE/FCC/ROSH