The SP-81 universal single zone hydronic radiant floor heating switching switching relay is operated by low voltage thermostats or any other low voltage controllers having a SPST switching action. The SP-81 provides intermediate switching to permit up to two separate line voltage loads such as circulators.
Product Features and Benefits:
* Modern Design with Indicator lights (LEDs) on the front panel which provide functional status
* Fuse protection
* Power surge protection
* High Quality Electronics Circuit Board which simplifies wiring and control Operation
* High Capacity Transformer
* Easy-Connect Terminals/Screwless Terminals for Thermostat Connections
* Common 24VAC transformer terminal provides compatibility with electronic thermostat
* Compatible with Most Digital/Mechanical Thermostats
* Field Replaceable Transformer
* 100% Factory Tested
* 3 Years Extended Warranty
