[100m range] Up to 100 meters range in the open space; It works properly without a sight stretch. The roller shutter control system retrospect quickly and easily realize a cost -effective radio control for your roller shutter drive, whether as retrofitting or with new installation. With this set it is possible to upgrade roller shutters and awnings in order to be to conveniently operate them using a remote control. [Radio roller shutter control retrofit set] Thanks to the remote control, hard -to -reach roller shutters can be controlled wirelessly from the sofa Comfortable help for and physically impaired people You can place the remote control in any location that is comfortable or keep the remote control on the supplied wall bracket. [Radio frequency] 433 MHz, high security through self -learning program. You can use up to 20 control set in the same room to control different devices without disturbing the radio channels. [ remote control] The remote control is child's play and