Enhanced Monitoring: Provides immediate visual alarm icons and LED indicators for power

Direct Compatibility: Specifically engineered for MA

Is a bushing required for the 5J-1/2 model

As a 7000 series replacement

The APA151 is designed primarily for standalone applications where a fire alarm control panel is not used

Lochinvar & A.O. Smith 100110589 Pressure Switch 320720-756 Enhanced Monitoring: Provides immediate visualThe Lochinvar & A. O. Smith 100110589 Pressure Switch is a critical safety component designed for high efficiency boilers and water heaters. As a genuine OEM replacement part, this switch ensures the combustion air pressure and venting conditions meet precise operational parameters before allowing the ignition sequence to proceed. It effectively monitors the inducer draft, preventing the system from firing under hazardous conditions such as blocked