Somfy Telis 1 Modulis RTS Handset is a single channel Radio Handset. The single channel means it can control 1 blind, or a group of blinds simultaneously, up to a range of 20 metres through 2 concrete walls, so line of sight is not required to operate your blinds. Scroll wheel for easy and precise slat orientation adjustment: incrementally or in a continuous movement. With fully integrated up, down and stop functionality, as well as a programmable “My” favourite setting that can also store a favourite slat angle, the handset is ideal for controlling one blind - or even multiple blinds simultaneously - at the touch of a button. The handset is supplied with the 3V Lithium battery, as well as a wall mounted hanging pin. Battery Life:  3 years (4 actions/day) Dimensions: 134mm x 41mm x 21mm