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Siemens 550-818B is an off-board air module that provides remote air sensing with auto-zero capability. It is designed for TEC and commercial HVAC/R control applications and is compatible only with legacy 550-767x controllers. The module uses plastic construction and delivers an auto-zero sensing signal to the connected controller for environmental monitoring and control.
Auto-zero remote air sensing module compatible with legacy 550-767x controllers; plastic construction for TEC and HVAC/R use.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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