Product Description: >Wireless Transmission,Suit for all kinds of 2.4g wireless camera >Motion detective for auto recording >Compact CCD/CMOS wireless camera >Support 2GB SD card >4 channels for wireless transmission >2 working modes: AVI recording and JPEG shooting >Overwriting when the SD card is full Specifications: Operating voltage: 5V DC positive polarity Operating current: 600mA Operating temperature: -10℃~50℃ Operating humidity: 20%~80% Output impedance: 75Ω Output level: 1Vp-p Storage media: SD card Usable capacity: 32MB-2GB (1GB-2GB recommended) Recording time: No limit, overwriting Input impedance: 75Ω Input level: 1Vp-p 2GB SD card could recording 3-6 hours under normal operation 2GB SD card could shooting 15 hours under normal operation