Tag: ST9100A Thermostat

Honeywell ST9100A Electronic Thermostat  Introduction ST9100 is an Electronic Timer which provides accurate time control for central heating systems and other applications. ST9100A is a 1-day version and ST9100C is a 7-day version. ST9100 is suitable for replacing a wide range of Timers on the market, and is a direct replacement for Honeywell ST6100 Timers…