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Secure (Horstmann) SIR020 15/30/60 Boost Timer
£27.59
Ex VAT: £22.99
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Hi
Yes it does. The dimensions are:85 mm x 85 mm x 19 mm (flush mount)85 mm x 85 mm x 44 mm (surface mount)
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Yes, it will reduce as it counts down.
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It connects to the same 4 connections. Yes, the E15 is obsolete.
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It varies for each model of combi boiler. It also depends on whether there is a room thermostat as well.
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