Honeywell ST9100S 1 Day Service Timer

ST9100 S is a single channel 1 day timer, designed for control of a single heating zone or combi boiler applications There is a built in Service Interval reminder that can be adjusted to offer a message, or restricting action, when an annual system service falls due ST9100 S has the new and ground-breaking Line of Text (LoT™) display that gives clear plain English instructions whenever any button or slider is used Up to 3 events per day Automatic summer and winter time change Single pole, double throw (SPST) relay 230 V AC 50 Hz 10 W Power supply Operating temperature range 0 to 40°C Conforms to EN60730-2-7 Temporary or permanent override facilities Large backlit display