Transmitter 433Mhz
1.Two remote transmitters for operation from distance up to 30-50 meters; 2.Built-in Automatic Reversing System-ensures the door returns to position when it meet with an obstruction while in closing mode; 3.Courtesy Light-lights automatically when door is in use; 4.Easy manual disengagement pull cord; 5.Automatic close option; 6.Safety infrared beams; 7.Power supply: 220V/50HZ, 110V/60HZ;