Hot Water Cylinders
Horstmann 425 Series Time Switches
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The best selling 425 range of electromechanical programmers with its dial and TAPPET arrangement is still the most easily understood solution to central heating and hot water control.
Horstmann 425 Coronet Electro Mechanical Programmer
Single circuit unit with four programmes and capacity to switch up to 13 amps (resistive load 250V AC). For combi boilers, extra zone control or immersion heaters.