... :< 0.1uA- Control distance:< 8m- control angle:< 30º Functions- Buttons A,B,C,D control 1,2,3,4 ways.- Button ... switch OFF. Important - If the remote controller is not used for a long period of time,disconnect the battery from the device.- ... degree, the receive equipment may not get the message at a long distance. You can choose to change the button battery ...