1,user-friendly and conveniently 2,8 channels 3,power :12V ... C~+50°C Receiver specificationDigital display, receive sensitive.Multiple working channels, convenience,high credibility, suit for wireless surveillance projects.Voltage ... pweight:115gdimensions:115*67*21mmchannel:8channelsworking frequency:1.2ghzPackage Contents:1X wireless transmitter1X receiver1X AV cable1X transmitter cable1X antennas1X ...