A three channel programmer for use in a 3 zone central heating system. Designed to operate hot water, central heating and a 3rd zone. Its functions include frost protection, holiday mode, boost and summer/winter changeover. Configurable for 5/2 day or 7 day programming. Complete with 1 year battery backup which retains program and time settings (replaceable lithium cell CR2032 battery).

Operating modes: Once, three periods, continuous Frost protection adjustable between +5°C to +20°C +1 hour override (boost) – 1 to 9 hour boost selectable Blue backlight Room temperature display Power supply: 230V AC 50/60Hz Output contact rating at 230V AC: 3(1) Amp