Honeywell ST9400C Programmer. 7, 2-Channel, 3 on/Off per Day, 24 V, White

The ST9400C in a 7-day Electronic Programmer which provides accurate time control for central heating systems with separate programmes for heating and hot water. ST9400C is suitable for replacing a wide range of programmers on the market and is a direct replacement for Honeywell ST6400 Programmers without the need for re-wiringThis Version replaces some of the following previous Honeywell Model...