As the official HH19ZA965A replacement

this specific 5101 model is primarily intended for general HVAC and VAV terminal control

This comprehensive furnace ignitor conversion kit is a direct replacement for York 473-20937-001 and White-Rodgers 767A-381

it automatically re-closes the circuit once temperatures drop to 95°F

Intermatic T171 Timer Els PW 17895 As the official HH19ZA965A replacementThe Intermatic T171 is a heavy duty 24 hour mechanical time switch engineered for contractors who require precise, reliable control over electrical loads up to 40 Amps per pole. This SPST (Single Pole Single Throw) timer is specifically designed for 125V applications where a "skip a day" feature is critical for energy management and operational efficiency. The integrated Skip a Day function, facilitated by three provided skipper screws, allows you to