LYD Wireless Security System DVR Infrared Surveillance QUAD Display allows viewing of all 4 cameras simultaneously; Record all four cameras in real time without a delay 2000/XP/Vista compatible without additional hardware or software Remote Access/ Viewing-Watch your system anywhere in the world over a browser 30 LED's for SUPER Night Vision, colorful, vivid and bright pictures- Cameras are waterproof and can be used INDOOR or OUTDOOR Can be used with TV or VCR, all RCA cables and power included; 150M Wireless Distance (open area)= 500 feet wireless distance Note:It will knock out any Wifi signal around 30 meters