The Mini Screw-In Dimmer allows you to wirelessly turn on/off and dim/brighten connected lights with SkylinkHome transmitters. The dimmer can communicate with up to 8 transmitters so you have the option to add more transmitters such as remote controls motion sensors etc. All wireless signal communications within the SkylinkHome System are based on rolling code technology to ensure the highest level of security. Rolling Code Technology Every time you press your remote transmitter a code is generated which is recognized by the receiver that in turn performs the desired function. With most systems there is only one assigned code. Whenever the remote is pressed it generates the same code making it vulnerable to code grabbers who use electronic scanners to steal the code. With rolling code technology each time the remote is used it generates a different code which can only be recognized by a rolling code receiver. Even if an electronic scanner picks up the code the next code will not be the same and the receiver will not recognize the old code. As a result systems with rolling code technology are increasingly safe and secure.