Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si [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 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. [RF remote control] The remote control is child's play and effortlessly learned. Remote control already trained in the recipient at the factory. The recipient (with a dimension of 5.2x4.5x2.5cm) fits into any standard flush -mounted box. Recipient with electricity and your switch and engine connected, then off you go with a remote control. [Package content] Radio roller shutter switch retrofitting Easy switching and control of electric engines for roller shutters, blinds, awning and sun protection. Colour:White Material:plastic Package Contents: 1x radio recipient 1x remote control 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.