Somfy Telis 1 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. With fully integrated up, down and stop functionality, as well as a programmable “My” favourite setting, 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.  The Telis 1 RTS Silver handset is silver in colour.  Battery Life:  3 years (4 actions/day) Dimensions: 134mm x 41mm x 21mm