Stelpro Canada

It appears you’re in the US. You’re currently viewing the Canadian website. Note that currencies and availability on the American and Canadian websites differ.

Vous semblez provenir des USA, mais vous êtes actuellement sur le site canadien. Veuillez noter que les devises et la disponibilité des produits diffèrent d’un site à l’autre.

Stay on the Canadian website
Rester sur le site canadien

Visit the American website
Aller sur le site américain

All Systems Operational

Since Tuesday, 23 February 2021, 04:00
Eastern Time Zone

Low Voltage Electromechanical Relay


A relay that comes with or without a 24 V transformer (6000 W @ 600 V).

Product images

  • R841 | FACE


  • Suitable for two-wire 24 V thermostats
  • Compatible with T822K1034, T87K1015 and ET180 thermostats
  • Compact size for easy installation in tight spaces
  • 120 V to 600 V
  • Duct socket for easy installation


  • All or nothing (on/off)
  • With a 24 V transformer (except the R841D1036 w/o a transformer)
  • Compatible with the T822K1034, T87K1015 and ET180 thermostats (the R841D1036 w/o a transformer is also compatible with the STE241 and D010 thermostats)
  • Installing more than four relays without a transformer to the same thermostat is not recommended (two relays without a transformer if connected to a STE241 thermostat)
  • No additional relay can be connected to the same control circuit as a relay with a transformer


  • These relays can be installed in an external junction box
  • These relays may or may not be installed in the junction box of the heating unit (see the accessories table for the heating unit)


  • One year