Connect an external power supply to vibration sensor MEMS V2

Hello, I bought some time ago several 'Industrial IoT Wireless Vibration & Temperature Sensor V2 MEMS. We used these sensors with batteries for a few weeks. However, we now have to supply them with external 12VDC power because we need to increase the frequency of the readings.By the way, is it really 12VDC?

If I remember correctly, the first generation of vibration sensors had a current connector inside the case. So I opened the case of one of our sensors (v2) but I found no such connector.

So my question is: How can I modify the electronic board in order to be able to connect the external power supply to it? I did see two holes identified + and - but nothing is soldered to these holes (see the red rectangle in the picture). If these are the two holes that should be used, could you please give me the reference of the connector that should be soldered to these holes? This would save me a lot of time.

By the way, I will place a new order for sensors tomorrow.Therefore, I would like to know if it is still possible to plug the external power supply directly into the housing with the new version of the sensor with a 2.1mm power jack. My client prefers a hardwired solution.

Yes, you can plug 12V supply in the +,- marking.


Thank you

Have a nide day :slight_smile: