Glow-worm clock for use in easicom, essential, betacom, ultracom2, micracom, and ultimate boilers. Also known as a timer, timeclock, or time switch, the clock allows the boiler's user to control when heating and/or hot water is turned on and off to maximise flexibility and comfort.

• Compatible with: Glow-worm Ultracom2, Easicom and Betacom2