Product Information
LED Indicators
Zone Fault Indicator
Automatic Circulator Short Cycle Protection
Available Common Terminal for Smart Thermostats
Test Button
10 VA Transformer to Provide Thermostat Power
Two (2) SPDT Relays
Fused Outputs with Spares Included
Extra L2 Terminal for Ease of Wiring
REPLACES TACO SR501 HONEYWELL R845A, TEKMAR 301P, ARGO AR822-ii, CALEFFI ZSR101