Backer 7" Standard Thermostat Manually Resettable The Backermatic BMST Thermostat is an ideal solution for retrofit to existing installations as it is possible to bring your old system up to the new standard by simply changing the thermostat. Alternatively it can be incorporated into any of our Immersion range (Backer type VC) to enable the Immersion heaters to meet the new standard. Our new range of BMST thermostats incorporate a secondary safety cut-out, which is independent of the main thermostat. The new thermostats have a second set of contacts which open and limit the water temperature to 98 degrees centigrade should the primary thermostat fail. The second cut-out is non-self-resetting. FEATURES: BMST thermostat with integral secondary non-self-resetting safety cut-out Cut-out is independent of the main thermostat Can be retro-fitted to old immersion heaters Rod length of 7 inches Fits Backersafe VC range immersion heaters BMST7