LYD Technology W701DK1 USB Digital Wireless Security Systems (Black) 2.4Ghz 4 channels digital wireless cctv camera system Zero Interference with Bluetooth Wireless Routers microwave ovens etc. Scheduled & Motion Detection Recording Network Remote Monitoring Day & Night 24 Hours Surveillance waterproof Wi-Fi friendly 100% safe signal privacy guaranteed Quad Image View & Record four images maximally Video Clips Playback Date Time Week Stamps on recording clips Sound Alert Support windows XP VISTA WINDOWS7 150m-200m transmission in the open air Support up to 4 cameras max Single image & Quad image display optional USB2.0 Email & sound alarm Audio& Video Recording, Image Capturing Intelligent Search Night Vision:15m Packing: Receiver:1pc Camera:1pc Bracket:1pc Power Adapter:1pc Operation Instruction:1pc Antenna:2pcs CD:1pc Service: We offer 1 year warranty of free repair or replace for all our product CE/FCC available