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and secondary limit circuits in high-efficiency systems
For maximum accuracy and response time
the O11-1711 is an automatic reset control
With electrical and thermal overload protection including auto-reset functionality
Resideo TDV040 Tridicator 321042-401 and secondary limit circuits inThe Resideo TDV040 Tridicator is a professional grade boiler pressure and temperature gauge designed for precise monitoring in hydronic heating systems. Featuring a 3 1 8" dial size, this instrument provides clear, simultaneous readings of system pressure and water temperature, essential for verifying boiler performance and safety. The mechanical movement is engineered for reliability in high heat environments, offering a 60 320 degree temperature