Dimplex Input Thermostat and Cut-Out is compatible with AC6537 Auto, AC6810, AL3623, AL7518, CPEX850, HSX6N, HSXDA6X Auto, NC850WAUTO, NC850WMAN, NL10575, NLASH08, NLSH6MN, SSH6A, SSH6M, STHS085, STHS085/09, STHS085A, TSR6AW, TSR6MW, VASH6A, Vash6 Manual, WMX706N, WPSH850AUTO, WPSH850MANU, XL6N, XLS6N, XLT6N, XLT6S, XMS706N and XMX706N storage heaters.