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4.5
I use these relays to replace a/c failed blower circuit boards, until i can get the replacement part.Used this for a Google Nest Thermostat for a millivolt LPG fireplace. The relay worked perfect and I can control my LPG fireplace with a Google Thermostat now! Love it!Not a Emerson product. What I received was made in China... But It's been fine so far. One we had before was made in China. It's gonna have to do!This little relay is cheap but quality. I got this to use in tandem with a 24v hardwired transformer to control my millivolt boiler. Since my current system had no C wire and was just the Rh/W wires to turn the heat on, I couldn't just plug in my Nest.After some research, it seemed like the safest way to add a 24v power supply would be to use a transformer and a relay. Some tutorials claim plugging in the two transformer wires into the C and Rc ports on the Nest will get it to work (which it will) but you run the risk of the Nest sending the 24V of power down to your millivolt system which would not be good.To get around that, I wired up my transformer then ran the Rh wire to the thermostat and the W wire from the thermostat to this relay on the control end then back to the transformer to complete the circuit. Then just plugged in the Red and White wires coming from my boiler into the controlled side of the relay. Completely eliminated the possibility of the two different voltages crossing and messing anything up on my ancient heating system. I also ran an additional wire for the C and Rc ports to provide continuous power but that's not necessary in this setup, just peace of mind for me.Now that it's been getting cold, this relay has been tested without a problem. The Nest kicks on to call for heat and the relay gives a reliable click with the heat kicking on immediately.Just keep in mind this is a physical relay so the click is going to pretty audible. If you don't want to hear it, put it somewhere tucked away. If you're not a fan, you can find a solid state relay that should do the same thing.Perfect replacement for my old white roger's brandThis was effective in solving the problem of our furnace vent fan running continuously.I needed a thermostat isolation relay and this one does the job well...The only thing or problem is no wiring diagramIt fits the same mounting as my previous relay and being 240 volt, allows me to use both sets of contacts / switches. (I only need one set as the vacuum uses 120 volts). So when the first set of relay contacts wear out, I can switch to the second set and not have to replace the relay until they also fail. I expect this relay will easily outlive me.You cannot go wrong with this relayI got this to set up my inline duct fan to come on automatically with the furnace fan.There are some other more practical and cleaner alternatives out there but you can't beat the price on thisWorks great. I measured the current draw of the coil it is only 320ma. Was worried because using my new furnace to control a humidifier and didn't want to much load. But 320ma is very low. I am turning on a small fan and solenoid of the humidifier with the contacts. Works great and my home is no longer dry.No issues. Simple replacement or use to augment your HVAC system. This is a quality part, not a cheap knockoff. You don't want to risk anything effing up your HVAC controls because they will fail at the worst possible time, guaranteed.It was small works as described. Can fit in a standard receptical box. I used it to switch a gas fireplace on a millivolt system
