1. Working voltage: 12V2. Working frequency: 433M 315M3. Total load power: 1000W4. Remote control distance: about 500m5. Encoding format: EV15276. Oscillation resistance: 270K7. Scope of application: garage doors, LED lights, barriers, access control, motors, etc.8. Power supply: a 23A 12V battery (not included)9. Features: Lightweight and simple, remote control distance is long, easy to use, wide applicability10. Size: about 9.3x4.3 cm/piece

http://olla.gr/2-pcs-4-key-wireless-remote-control-lamp-garage-door-remote-style-with-antenna/