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Optimum Electronic Boost Timer Universal 15 Mins - 2 Hour Immersion Heater Energy Saving
Optimum Universal Economy 7 Timer Water Immersion Storage Heater Time Switch Boost
Tower Room Thermostat Combi Boiler Wired Neon Indicator Control Switch Dial STTRSL
Tower Frost Protection Thermostat Combi Boiler Heating Control Dial STTRFSN STAT
Tower Thermostat Tamper Proof Combi Boiler 10 - 30 Degrees Temperature Switch Dial STTPRS
24 Hour Mechanical Timer Switch Immersion Heater Timer Time Clock Fits 1Gang Box
Optimum WiFi Boiler Module Immersion Heater Control Timer Smart App Programmable
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