Bracket: die-casting Hood: standard sunshade Size (width * thickness * height): 116.2mm * 140.2mm * 403.7mm (including sunshade as a whole) Weight: 1.342kg (bare machine), 1.9kg (one-time packaging) Installation method: bracket installation Usage environment: indoor and outdoor Built-in microphone: support Built-in speakers: support Screen size: 7 inches (vertical screen) Screen ratio: 9:16 Screen resolution: 600*1024 Touch screen: support Light supplement scheme: white light supplement light, infrared supplement light EMMC:8G IO: Input: 2 channels (IN1/IN2/GND) Output: 2 channels (NC1/IO1_P/IO1_N; NC2/IO2_P/IO2_N) Power input: DC12V (positive and minus 25% wide voltage range) Network: 100Mbps single network port Serial port: serial port 1 (RS485) Wigan interface: 1-way Wegan-in (W0/W1) 1 route out of Wigan (W0/W1) USB: The tail line includes 1 USB2.0 interface Power consumption: 7.2W Operating temperature: -20℃~60℃ The maximum storage capacity of the card number: 2W Maximum storage capacity: 2W Local record capacity: without pictures: 100,000; with small pictures: 25,000 Multi-personnel management: support up to 16 personnel pools