Digital RF Four Camera 4 channel DVR security system Support SD / TF card

home business use 4 channel DVR security system for safety purpose Specifications: Features of receiver Transmission frequency 2.4GHz-2.485GHz Digital RF modulation Antenna type Omnidirectional Receiving sensitivity ≤85dB SD card storage Max.32GB (micro SD / TF) AV output 2 ways of output TV system NTSC/PAL Operation temperature -10℃~50℃ Power Adapter DC 5V/ 1A Power consumption ＜5W Dimension 160mm(L)*90mm(W)*46mm(H) Weight 125g Features of transmitter (camera) Image Sensor 1