QN-KIT01 2 channels universal 315mhz micro transmitter and receiver Features: 1. micro transmitter and receiver ,2-Channel or 4-Channel independent set-up 2. Can learn up to 100 transmitters(50 pcs 2 button remotes or 100 pcs 1 button remotes 3. Costomized frequency such as 433.92Mhz, 315Mhz. 4.Can be used in garage door or property gate(save your cost) 5. Power supply : 9V-24V DC/AC 6. Relay Spec.: 12A 14VDC or 7A 120VAC 7. CE proved