The remote control adopts SA901B main control chip, supports online programming, can be programmed repeatedly, built-in EEPROM, can copy other ordinary remote controllers with the same frequency, can clear codes and learn codes at any time, easy and fast to use, can be used in car remote control, light control, Smart home remote control and other fields. Working frequency: 433 MHz. Power supply scheme: DC3V (button battery 2032) power supply; Standby current: less than 0.15uA Good selectivity and stray radiation suppression ability; Good local vibration suppression ability. Temperature range: -20-70, it can work normally even in harsh environmental temperature. Product size: 60x37.4x11.4 (mm) (including shell); Product weight: 14.39g (including shell). Notice:The remote control can not copy with the Rolling codes Function Description: (1) Copy code operation If the remote control has checked the code, the code must be cleared before the code can be checked. Code matching operation: the single button of the copied remote control and the copy remote control at the same time, until the indicator of the copy remote control flashes from fast to steady on, you can release the two remote control buttons, and the code matching is successful. The other keys are also operated in sequence according to this method until all keys are copied. (2) Clear code operation and hold the lock and unlock buttons of the copy remote control at the same time until the indicator light flashes 3 times, and then short the unlock button three times. The indicator light flashes continuously to indicate the success of the code clearing (the lock button is pressed during this process). (3) Recovery code operation and hold the mute and ring buttons of the copy remote control at the same time until the indicator light flashes quickly, you can restore the remote control code that was cleared before. Normal working voltage:DC2.4V-3V Emission current Less than 20mA Launch distance 25 meters Quantity:10PCS Colour:Black Material:Plastic Package Contents: 10 * Copy Remote Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.