# Detection powerswitch **URL:** \ **Category:** Devices\ **Created:** [May 27, 2020, 7:18am UTC](https://community.homey.app/t/detection-powerswitch/30476 "2020-05-27T07:18:36Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![pvkan](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/pvkan/32/16433_2.png) [@pvkan](https://community.homey.app/u/pvkan)\ **Post date:** [May 27, 2020, 7:18am UTC](https://community.homey.app/t/detection-powerswitch/30476/1 "2020-05-27T07:18:36Z")
Hi, I want to detect when a normal powerswitch is set to on (and off). A transmitter like the KaKu AWMT-230 is not an option, because these kind of transmitters only sends a signal when there is also a powerconsumer attached through wire. So i need f.i. a lamp/bulb to get the AWMT-230 to work. That’s not an option ofcourse. Does anybody knows a trick/device which does not consume (or minimal) power to get things done ? (sending a signal when it receives power and again when it is switched off). Replacing the switch for a radio capable one (like KaKu 8802) is also not an option. The switch is part of a specific type/serie and is attached next to an outlet of the same serie/type. Peter ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [May 27, 2020, 7:39am UTC](https://community.homey.app/t/detection-powerswitch/30476/2 "2020-05-27T07:39:50Z")
I don’t see why you shouldn’t be able to use an AWMT-230. Looking at the installation documentation, it’s attached in parallel to an existing light source, which means that it should act independently of that source: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/4/6/46af23a69474a9e8e1553b94fd8c99ddd0b1fc47.png) Just leave out the light source, and it should work. I can’t really think of any alternatives that are battery powered. If it’s possible to permanently power a device (which almost always will be possible), look at a Shelly 1, a Fibaro Switch or a Qubino Relay. ---
**Author:** ![pvkan](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/pvkan/32/16433_2.png) [@pvkan](https://community.homey.app/u/pvkan)\ **Post date:** [May 27, 2020, 7:55am UTC](https://community.homey.app/t/detection-powerswitch/30476/3 "2020-05-27T07:55:04Z")
HI, Thanks for your reply. The problem with the AWMT-230 is that the device transmits a signal only if there is a ‘powercurrent’ detected (so not the power only). So that’s why i still need a lightbulb behind the same switch (to generate the current). Below a part of the dutch manual. I also tested it; the AWMT-230 is indeed not working when there is no lightbulb attached to the same switch: ![230](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/7/f745df6406af53a7cbef2dd4847f9c200dac70e8.png) Good news: If just found the AWMT-003. Does the same but may **NOT** be attached to the 230v wiring. I think this will solve my problem (for an extra €24 euro’s 😉 ) Peter ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [May 27, 2020, 8:14am UTC](https://community.homey.app/t/detection-powerswitch/30476/4 "2020-05-27T08:14:32Z")
Ah okay, didn’t read that in the manual 😅you can buy a Shelly 1 for a lot cheaper. ---
**Author:** ![pvkan](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/pvkan/32/16433_2.png) [@pvkan](https://community.homey.app/u/pvkan)\ **Post date:** [May 27, 2020, 8:40am UTC](https://community.homey.app/t/detection-powerswitch/30476/5 "2020-05-27T08:40:15Z")
A Shelly 1 is only a (wifi)receiver (cannot transmit) though ? So i think it won’t do the trick ? Peter ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [May 27, 2020, 9:12am UTC](https://community.homey.app/t/detection-powerswitch/30476/6 "2020-05-27T09:12:16Z")
It can transmit 👍🏻