①. This is a fixed frequency remote cloner (433.92mhz) for copying common fixed and learning code remote controls. ②. Applicable to automobiles, garage doors, doors, skylights, car/motorcycle alarms, home products, short-distance wireless remote control products, electrical appliances/home automation lamps, industrial control products, etc. ③. Easy to use, 4-channel remote control system with anti-theft/one-click anti-theft helps you control your gadgets, cars, homes and garages. ④. Clone up to 4 remote signals from 4 different remotes. Simple pairing with the remote. ⑤. Operating Frequency: 433MHz ⑥. Remote Control Range: Up to 50 meters ⑦. Due to different batches, there may be differences in product printed text, which will not affect use ⑧. Colour: Black ⑨. Material: plastic ⑩. Package Contents: 10 x Remote Control ⑪. Only the above package content, other products are not included. ⑫. 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.