STRONG SIGNAL: Adopts RF technology, the signal can pass through walls, floors and doors, regularly controlling the receiver from any location at a reliable distance. Maximum gate is 328 feet unobstructed. High power load: with a 40A receiver relay, capable of charging high power electrical devices to ensure long term stability control. Security control: the learning code has a high security level for its low repetition rate and its retraining mode, it can delete the old code and re-learn a new code, when a remote control is lost. So you can still control it. Easy to use: Extremely easy to set up, learn, relearn and control (please see the introduction). Stable and reliable performance, high reception sensitivity. Configuration of 2 remote controls, more flexible use. Wide application: It is mainly used in lamps, electric doors, windows, lifting equipment, barriers, elevators, industrial control and security industries, etc.