1. Can copy 280-868MHZ learning code, fixed code and some rolling code remote control 2. It can copy dozens of remote controls such as , came, , etc. 3. The buttons of the remote control are from South Korea, which can be used for millions of times, and the number of times is up to ten times that of domestic buttons. 4. The frequency of the crystal oscillator is ±75kHz, and that of others is ±300kHz. 5. The PCB board used is an glass fiber double-sided panel (the cost of double-sided panels is higher than that of single-sided panels), which has reached standards, with high density, high temperature resistance, and no deformation. Working voltage: 3V Working current: less than equal 12mA Working frequency: 280-868MHZ Transmission power: 10-15mw Launching distance: 80 meters (open space) Transmission rate: 50-60KHZ Duplicate has the function of duplicating the remote control and can be used alone Number of keys: four keys Scope of application: wireless remote control is widely used in various door and window control Colour: Black Material: Plastic Package Contents: 3 x remote control switch 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.