Features: 1.Wide Application: Can make copy, copy type roller shutter wireless remote control, widely used in various door and window controllers and other industrial control, anti theft alarm, smart home and more. 2.Durable Construction: The button and metal frame adopt plating process, which will not fade after long term use, resistant to high temperature, and the ABS shell is not easy to damage. 3.High Performance: The garage door opener learning code key has high acceptance sensitivity, strong anti interference ability, narrow bandwidth, long receiving distance. 4.Practical: Strong privacy, one to one key copy, each key password will save alone. Copy any fixed code remote controller, save the trouble of replacing specified remote controller. 5.Coding Chips: Adopts standard copy remote control coding chip, supports copy function, and has the function of copying remote control and can be used alone. Specification: Item Type: Copy Code Remote Control_x000D_ Material: ABS, stainless steel, metal_x000D_ _x000D_ Size: Approx. 5.5x3.5x1cm/2.17x1.38x0.39in_x000D_ Battery: DC12V 27A, 30mAh_x000D_ Parameter:_x000D_ Working Voltage: 12V;_x000D_ Operating Current: 0.8mA;_x000D_ Working Frequency: 433MHz;_x000D_ Transmission Power: 10-15MW;_x000D_ Launch Distance: Approx. 100m/328.08ft (empty);_x000D_ Frequency Deviation: 0.2MHz;_x000D_ Transmission Rate: 50-60KHZ;_x000D_ Coding Chip: Standard copy remote control code; It has the function of copying the remote control and can be used separately;_x000D_ Number of Keys: 4 keys_x000D_ Shell Color: black;_x000D_ Scope of Application: Customizable copy, copy type roller shutter door wireless remote control is widely used in various door and window controllers and other industrial control, anti theft alarm, smart home and other fields