2. amps-preamps
  3. 195493-202224

WiFi enabled 12V trigger in relay/switch? (Without having to wire one up myself)

In a 2d (or maybe 3d) system, I have an NAD C399 integrated amp, with the BlueSound module. I use it only for streaming. It is hardwired to a Eero mesh unit.  It does not have an “auto-sense” turn on feature but it does have a 12V trigger in port (standard, 3.5mm female) that can be used to turn the unit on. Unfortunately, I have no other audio devices near it so using the trigger in port in the typical manner is not an option.  (The amp is in an out of the way location where the IR remote will not work unless i am standing in front of the amp. )

I would like to figure out a way to plug a 12V relay switch into the  trigger in port and control that switch via WiFi or Bluetooth. After searching on-line for a while, I see there are devices that work to detect an audio signal and then provide a 12V signal or even a 110V charge (for mains power connection), but nothing that does what I’m after.  So, two questions:

1.    As DIY wiring is not realistic for me, ⁠is anyone aware of a plug-and-play unit that would do what I want, either on its own or if plugged into a WiFi compatible smart plug (like this https://us.govee.com/products/govee-smart-plug-pro-with-energy-monitoring); and
2.    If the answer to 1 is no, will I harm the C399 if i just plug a 12V switching power supply (like this one: https://www.sweetwater.com/store/detail/iPower12VMk2--ifi-ipower2-power-supply-12v ) using a barrel to 3.5mm male adapter into the C399 12V trigger in port and then connecting the wall-wart PSU to a smart plug, like the Govee one?

Many thanks for any suggestions or advice.

kirkwallace

Showing 2 responses by jeffbij

jeffbij
250 posts
 

@kirkwallace 

Easiest way is going to be #2.  It is even easier if you are using Amazon Echo/Alexa devices in the house. You can get an Alexa compatible plug for as little as $8 to $10 dollars each. (The Kasa/TP-Link units work well.) If you don't want to use the Echo/Alexa enviroment for voice control, you can still control the plug using the app on your cell phone.  And if you have more than one device to "trigger", you can build routines to control multiple plugs/wall warts with one command.

One thing on the wall-wart.  Make sure it is a "regulated" switching adapter.  Non-regulated ones can cause problems with some triggers because the voltage will drift.  And you don't need to spend $80 for one.  You can get one on Amazon for less than $20.  All you are doing is triggering the relay.  

 

jeffbij
250 posts
 

@kirkwallace - At that price, I'm betting the iFi power is regulated. And if you all ready have it, then it won't cost you anything to try it.  

I have setup several "second" systems around the house using similar setups with the Amazon Echo devices to control the plugs.  It is nice to be able to walk into a room and say "Alexa, Garage Stereo on" and presto, the equipment turns on (or "Alexa, Garage Stereo off").  And you can find used Echo Dots on eBay for <$20 with shipping. 

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