Features: The remote control is widely used, mainly used for remote control of some car. Remote control electric retractable doors, elevators, remote control barriers, remote control rolling doors, garage doors, sliding doors, remote control LED lights, remote control passenger car doors , Anti-theft alarm, electric door alarm, MP3 motorcycle anti-theft alarm, etc.; The radio frequency remote control adopts radio frequency technology, stable signal. Transmission distance is up to 20--50meters with no obstacle. Transmission frequency: 433 MHZ; Specifications: Material:ABS Color:Black Size:Approx.6.1x2.9x1.2cm/2.4x1.14x0.47in Working Voltage: Dc 3v ( Built-in 2032Battery) Working Current:10mA@3V Radiated Power:10mw@3V Transmission Frequency: 433 mhz Transmission Distance: 50-100m (open Space, Receiver Sensitivity is Negative 100dbm) Encoder Learning Code: EV1527 Option Type:on/off Controller ,A/B Controller Package Includes: 1x 433 mhz Wireless Remote Control note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.