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AC120V On/Off Switching Electric Heating Relay with Built-in 24V Transformer, OONO F-1057

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$28.00

$ 12 .99 $12.99

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About this item

  • The F-1057 Electric Heating Relay is designed to control a AC 120V line voltage resistive load from a low voltage thermostat. The F-1057 relay has a built-in 24 V transformer and is compatible with 3-wire (R, C, W) thermostats as well as 2-wire (R, W) mechanical and battery-operated thermostats.
  • Replacement for any brand relay. Immediate relay activation provides improved temperature control and comfort. Easy to install, merely munted it on the side of existing junction box and attached the wires from the new thermostat.
  • LED indicator for relay action. On a call for heat, the relay is immediately activated, there is no delay.
  • Polycarbonate plastic enclosure, all wires lead out via 1/2” mounting nipple, it can be flexible mounting with your junction box / outlet box. Two screw mounting holes are convenient for you to fix it on the wall or wooden board.
  • Packing list: 1x relay module, 1x NPT 1/2” Zinc alloy conduit locknut, 2x M3x50mm screws.
  • NOTE: Not recommended for fast-cycling modulated regulation. For fast-cycling heating equipment, you may muse use Solid State Relay.



Bob S
Reviewed in the United States on March 25, 2025
Great project!!! Really fits a particular need
Quality First
Reviewed in the United States on February 11, 2025
Used this to add a smart thermostat to control my electric baseboards. Work good and easy to wire.Also used a second one of these to add a smart thermostat and control a draft inducer fan on my shop wood furnace.Works good so far.
Gerald S.
Reviewed in the United States on September 23, 2024
Yes a blower motor and old boiler system in apartment. Stock thermostat kept poor temperature control and fatigue of thermo spring kept on/off times unreal! So it had to go. This adapter has a relay with high amp contacts for the high voltage high current blower. Even running at max start my blower was a few amps. This isolates the blower connections and the relay coil is rated for the 24v ac thermostat the nest is. Wiring was as easy as a 3- wire system once installed. Functional and compact enough to fit in a single switch box once removed from black case housing. Circuit taped up and fit into box. Mounted thermostat ontop of existing wall box. Value its cheaper than I could have built and still decent quality for me! Versatile for all two wire high voltage systems!
NANCY LYNN
Reviewed in the United States on February 16, 2024
Terrible. Lasted just long enough for the return window to close. Save your money.
Matthew Burmeister
Reviewed in the United States on December 28, 2024
So this is the 2nd device I purchased (both will be returned) in which it the relay doesn't close more than a half second. The first one was continuously opening and closing and the replacement it is sporadically doing such every few seconds. Worst experience I've had with a seller/Amazon in quite a while. Very disappointed. Maybe the Aube that was considerably more in price makes sense now.
Bill
Reviewed in the United States on December 28, 2024
I’m using this to control a space heater with a nest thermostat. It works perfectly.
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