Vaillant TimeSWITCH 140
Vaillant TimeSwitch 140 Timer is a plug-in 7 day or 24 hour digital programmer that has independent time control for central heating and hot water. Vaillant TimeSwitch 140 Programmer has 3 independent on/off periods per day and a central heating advance function and holiday set-back function. Also includes a calendar function for automatic summer/winter changeover.
