Secure Horstmann Centaurplus C17 ~ 1 Channel 7 Day Electronic Heating Control\nCentaurPlus single-channel, 7-day control suitable for combi boiler applications, an extra heating zone, or the pump on a solid fuel boiler. Highly popular and affordable, the latest Series 2 units now feature an upgraded back-lit display screen and incorporate an automatic GMT/ BST clock. All models feature an industry-standard six-pin backplate, which permits easy replacement/upgrade, with the C17 being suitable for use with combi boilers and the C27 being ideal for non-combi boiler installations, where a hot water cylinder is in use.\nApplication\n--Control of most domestic gas or oil-fired central heating and hot water systems\n--Combination (\u2018combi\u2019) boiler systems\n--Stored hot water systems\n--Solid-fuel systems\n--Additional zone control\nBenefits\n--Standard wall plate \u2013 simple to plug-in and replace\n--Direct replacement for many competitor products\nFeatures\n--7-day pros