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Hi, Am trying to replace the currently installed Honeywell BDR91 receiver with Heatmiser Slimline RF switch. But am confused with the wiring. In the BDR91 there are only 3 other points apart from the mains (A, B, C) but the Heatmiser has 8 (COM1 & 2, NC 1 & 2, NO1 & 2, LS, LR). Am not really...