I need a simple, inexpensive device that can offer a contact closure over either z-wave or WiFi. I want to create a Switch Item in OH2. When I turn the switch on, the remote contact should close (momentarily, actually - I need a button-press, but was going to do that in code). I have an on-demand…

Thanks @sihui !! Now all I need is a wireless remote contact closure I can use to turn on my on-demand water heater.

[image] bgilmer: remote contact closure https://manuals.fibaro.com/double-relay-switch/ It’s able to switch voltage or provide a volt free contact (be careful about wiring in this case or you will blow up your water heating equipment)

I will take a look. Yep - dry contacts only. No ZAP needed from the device itself (the ZAP could be a Very Bad Thing :wink:

[image] bgilmer: I will take a look. Or take a look at the cheap SOnOff products. Wifi connection without needing a gateway to OpenHAB, but you need to solder to get the right firmware on it.

[image] sihui: but you need to solder to get the right firmware on it. Actually most of them can be flashed with Tasmota over the air now. No need for a programmer or solder.

[image] rlkoshak: Tasmota over the air now Yeah, I know, but because of this post I did not mention it so he does not get disappointed :blush: [image] Sonoff Binding without tasmota Home Automation OTA Flash only works on Firmware < 1.60 Maybe you can …

I am aware of these devices (and the soldering - not a problem). Do you guys use them?

Thanks for the heads up. I was unaware that the newer firmware from Itead broke the OTA flashing. :frowning: It was so much easier using OTA. [image] bgilmer: Do you guys use them? I use some Sonoff Basics to control my Christmas lights. I don’t really have a job for them the rest of the yea…

Hum… so I wonder how I can tell if a device has the older firmware if I buy it on ebay. Sounds like buy and pray.

Not a real big deal if you are OK with soldering or using pogo pins. In the worse case scenario, you can’t flash the firmware OTA. You can still do so through the pins. The big thing you have to worry about when buying off of eBay is getting counterfeit devices which won’t work with Tasmota at all. …

openHAB Community

Simple Contact Closure Device Needed

Hardware Home Automation

sihui (SiHui) February 19, 2018, 9:37pm 10

Yeah, I know, but because of this post I did not mention it so he does not get disappointed