That's right.
When contact changes, the esp power up connect to m'y AP and updates domoticz through http.
Then, the sensor is power off itself.
I use it on my fridge, not on a major access.

Hi !
Door sensor owner here
I just connect the reed to GPIO13. It works since 25/08 without battery replacement.

Hi,
I'm very happy to see that !
I'm using it with an LCD 16x2 without any problem since 1 year.

Jeff wrote: ↑13 Oct 2017, 22:13 It's a WOL function

No, just ping (icmp), not a WOL function.
I use it with a dummy and rules.
If 10 pings fail, it resets my raspberry with a relay.

Hello everybody, In my Home automation system, a wemos reboots my raspberry in case of crash. I made a plugin which pings an IP address. I use the ESP8266Ping library. https://github.com/dancol90/ESP8266Ping Here the plugin : //########################################################################...