Legrand MicroRex W31 Su/Wi - Plug & Play, analog weekly timer with automatic time setting when started up, 1 channel, operating voltage 230 V 50/60 Hz. Automatic summer/winter time changeover and automatic time adjustment after a power failure. Precision quartz movement with an accuracy of +/- 0.2 sec/day. Power reserve 6 years (time buffering in the event of a power failure). For installation in distribution boards, with manual switch: ON-automatic-OFF, with captive switching segments, with LED status display, cover can be sealed, shortest switching time: 4 hours. Switching output: 1 changeover contact.