Technical parameters: Equipment Model BE-910C series operating system embedded RTOS operating system video compression standard H.264 Preview resolution PAL: 704 x 576 (4CIF); NTSC: 704 x 480 (4CIF) Playback resolution 4CIF/DCIF/2CIF / CIF / QCIF video input 1/4 Road (PAL / NTSC automatic identification; Level: 1.0Vp-p, impedance: 75Ω) Video Output 1 channel (PAL / NTSC optional; level: 1.0Vp-p, impedance : 75Ω) Video Frame Rate PAL: 1/16 ~ 25 frames / sec; NTSC: 1/16 to 30 frames / second video compression rate 32K ~ 2M adjustable, can also be custom ceiling 8M (unit: bps) Audio compression standard OggVorbis audio input 1/2 Road (level: 2.0 to 2.4Vp-p, impedance: 1000Ω) Audio Output 1 (level: 2.0 ~ 2.4Vp-p, impedance: 600Ω) to select a single video stream type 3-way level signal input stream or composite flow alarm input Alarm output 1-way switch or dry contact signal output wireless network transmission module built SMA antenna connector GPS positioning Beidou module built-in high-sensitivity, SMA antenna interface data storage SD card storage support a maximum capacity of 32GB / hard disk storage to support the maximum capacity of 500G data backup SD card backup, USB backup communications interface LAN, the USB interface of a delayed shutdown vehicle after flameout delay after 5min ~ 6h shut down the power supply input DC +6 ~ +36 V USB port output) power output DC +12 V/2A +5 V/2A (device power consumption 5W Operating Temperature -10 ℃ ~ +55 ℃ Operating Humidity 10% to 95% Size 175mm (width) x 71mm (H) x 129mm (D) Product weight is about 1Kg