Specification: Operating System: Lite OS Online: 10 people are watching online at the same time Processor: Jingzheng T21 Image sensor: H62, 1/4 inch 2k progressive scan CMOS sensor Minimum-illumination: 0.3～0.5Lux (color mode), 0Lux (black and white mode) Lens: H62 integrated module Viewing angle: 150° diagonal Night vision: automatic switching of lens sensitivity, 6 940nm SMD infrared lamps, irradiation distance of 3 to 5 meters Compression standard: H.264 main Profile/H.264 Baseline Profile/MJPEF/JPEG Baseline Multi-stream: 2K@30fps+VGA@30fps+360P@4fps JPEG capture Code rate: CBR/VBR two code rate control modes, output code rate range 128～4096kbps Image adjustment: brightness, contrast, saturation, and chroma are adjustable Input: Built-in 38dB microphone Output: none Sampling frequency/bit width: 8KHz/16bit Compression standard/bit rate: ADPCM/32kbps Network protocol: TCP/IP, HTTP, TCP, UDP, DHCP, DNS, NTP, RTSP, P2P, etc. Wireless network: IEEE802.11b/g/n Wireless frequency: 2.4~2.4835GHz Wireless security encryption: 64/128-bit WEP/WPA-PSK/WPA2-PSK data encryption Wireless connection: AP hotspot mode Button 1: Switch machine Button 2: Reset the machine and record the two-in-one Reset hole: long press to restore factory settings Storage function: support T-Flash card, maximum 128GB (not including memory card) Alarm detection: support motion detection Rated voltage: DC5V±5% Power supply: comes with 1000mAh battery for power supply Working environment: working temperature: -10～50℃, working humidity