making it suitable for modern high-efficiency hydronic loops

Key Benefits for the Contractor Universal Compatibility: Fits all 1

Universal 24V Control Power: Optimized for standard low-voltage control circuits

snap-action switching performance

this unit maintains tight atmospheric control without the cross-contamination risks associated with flow-through designs

Honeywell S7800A1001 Keyboard Display Module 326070-701 making it suitable for modernThe Honeywell S7800A1001 Keyboard Display Module (KDM) is a critical diagnostic interface designed for use with the Honeywell 7800 Series Relay Modules. Engineered for demanding industrial environments, this Series 5 module features a high visibility 2 row by 20 column Vacuum Fluorescent Display (VFD) that provides real time burner sequence status, including standby, purge, pilot ignition, and run modes. Operating on 13Vdc peak fullwave rectified