Memory Latching Relay 2SPDT 16A Electronic Din Rail(GRM8-02,AC/DC12V~240V)

Worked perfectly. Instructions were easy to understand.

Good quality

This is a latching relay providing your input voltage remains connected. So long as you are happy with the quiescent circuit it will work as described. I'm using it to take a 12v pulse from a numeric keypad switch which opens and closes magnetic locks and it's working well.

I needed this to replace an old one and this one looked like it would do the job. It works very well.

Bought this relay for our boat to keep the switch to the our trolling motor on all the time until I turn it off. Does a good job for this.

Good buy

I used it to wire multiple switches to control the lighting in a large commercial shop with many entrances.

Works, many options availble

First: The only reason I didn't give this 5 stars is because the gauge of wire that fits the terminals is a bit small for my application however I'm sure that is by design to reduce the size of the whole device. Second: Some people have commented about it not being a "true" latching relay. That is not an entirely accurate statement. It just works differently than older types of latching relays to accomplish the same thing. Older styles of latching relays took a signal pulse to mechanically latch and unlatch a switch. On this relay your supply A1 and A2 power the relay and it is true that if those lose power the relay is no longer latched. However, If you are using the same power as a supply to A1/A2 as what you are switching then that wont matter. The relay will work when there is power for it to switch and not when there isn't. Then with its memory, when it has power again it will return to the state it was in before power loss. This accomplishes "Latching" just not the way some people are used to. There are some benefits to this operation depending on your application and your control system but that's a longer explanation than what should be in a review. If you are thinking, "but my switching signal voltage isn't the same as the voltage being switched" use an additional simple relay with it so you can you can use what ever voltage you want to pulse a contact that would act like a switch. In my application I needed to signal the latching relay with 24vdc. So I used a 24vdc dpdt (what i had available) and put it between A1 and S on the latching relay. Then when my system pulsed the 24vdc relay, the contact to S would close momentarily switching the latch. This also provided additional circuit voltage isolation which was a bonus for my application. Even with the additional 10$ relay, this is still more cost effective than other latching relays.