Resideo R845A1030 Relay R-410A The integrated base alarm board

The integrated base alarm board offers critical diagnostic outputs for remote monitoring

ensuring a factory-tight seal against high static head pressures

Key Benefits Multi-Tap Primary: Supports both 208V and 240V inputs for broader equipment compatibility

Attempting to wire this for single-phase or lower voltage will result in a significant drop in kW output and potential damage to the element or the HVAC repair integrity

Reliable Communication Logic: Specifically designed to resolve digital signaling issues between HVAC control modules

Resideo R845A1030 Relay R-410A The integrated base alarm boardThe Resideo R845A1030 functions as a mission critical hydronic switching relay designed for demanding multi zone boiler applications. This DPST switching relay features an integral transformer providing 24Vac current to power two wire or three wire thermostats, including modern Smart Thermostats with C wire requirements. The double pole single throw configuration allows for simultaneous control of a line voltage circulator pump and a low voltage