Anti - interference waterproof 4 camera DVR security system for villa office farm

anti - interference waterproof 4 camera DVR security system for villa office farm Specifications: General specifications for Monitor P/N SEEPOWER SP890 Screen type TFT - LCD full color display Screen size 7' full color Contrast 300:1 Brightness 300cd/m2 Transmitting frequency 2.4GHz - 2.485GHz digital modulation Antenna type omni-directional Receiving sensitivity ≤85dB Speaker output 80dBA Power Adapter DC 5 V / 1000mA Working temperature -10℃~50℃ Working humidity ≤85% Weight