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 Material: ABS, stainless steel, metal Size: Approx. 5.5x3.5x1cm/2.17x1.38x0.39in Battery: DC12V 27A, 30mAh Parameter: Working Voltage: 12V; Operating Current: 0.8mA; Working Frequency: 433MHz; Transmission Power: 10-15MW; Launch Distance: Approx. 100m/328.08ft (empty); Frequency Deviation: 0.2MHz; Transmission Rate: 50-60KHZ; Coding Chip: Standard copy remote control code; It has the function of copying the remote control and can be used separately; Number of Keys: 4 keys Shell Color: black; 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