Somfy Telis 4 RTS Handset is a 5 channel Radio Handset (4 LED’s, one for each of channels 1-4, 5th channel shown by all 4 LEDs lit) Each channel can control blinds individually or as a group, 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 multiple blinds 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