Tag: 7-Days

Honeywell Home ST9400C 7-Days PROGRAMMABLE THERMOSTAT Introduction ST9400 is an Electronic Programmer which provides accurate time control for central heating systems with separate programs for heating and hot water. ST9400A is a 1-day version and ST9400C is a 7-day version. ST9400 is suitable for replacing a wide range of Programmers on the market and is…