Using a 3V latching relay to power up ESP8266 I'm trying to use a 2-Coil Latching Relay like TXS2SA-L2-3V for  powering up a ESP8266. My idea is to activate the relay by setting the first coil to high and deactivate the coil by setting the second coil to high. In my circuit i will set the second coil to high at the end of the code by the esp8266. I need the latching (holding the power) function of it. Because when somebody activtes the Deep Sleep function to early, I have no electricity to power the esp8266.

My question is:

What kind of circuit I must use? I have no idea where I can start. 

I have a regulator that can be enabled via de EN signal.

Thanks in advance!
You use a latching relay of this form in the exact same way as a normal relay - it's just there's two of them.

One coil you want to control with a button (power on) and the other with a transistor (and possibly an "off" button as well).







simulate this circuit &ndash; Schematic created using CircuitLab

Press ON to latch the relay into the ON position (NO -> COM). Activate M1 or press OFF to latch the relay into the OFF position (NC -> COM).