I’m looking for a way to monitor the circuit for a freezer. I want to alert when the outlet no longer has power. I don’t see a product for this. At the moment it looks like I need a PG9935 and plug in a small USB transformer and run it to the aux on the 9935.
Thoughts?
The PG9935 has inputs that would need a normally closed or normally open circuit. What you can use is a PAM-1 relay using the 110VAC from behind the plug. Then use the normally open or normally closed outputs of the PAM-1 connected to the terminals on a PG9945
Here’s a link to a home-grown version I created last year. It uses low voltage transformer to monitor the 110v line. Originally built as 12v but a 5v version is actually in my garage monitoring my chest freezer line. This example uses a IQ Door Extended sensor, but a PG9945 or PG9309 could be used too. A little ugly, but functional and is a plug-in solution rather than hardwired. Includes programming guide for the IQ 4 and other details. Just in case you are interested.
Thanks. That’s helpful.
With the 9945 I can use the aux as secondary, yes? So, I could use it for door open close and also power loss at the same time?
Does it meet code in the US to put a pam-1 in a junction box that separates high and low voltage and run a pair of wires from the low voltage side for the NC to the 9945?
I believe it can only be used as one zone only. If you would like multiple zones, there is the PG9309 which has 2 zone inputs but we do not have this on our store.
Yes, Just make sure you use different entry exit slots for high and low voltage and use the correct connectors. Always try to keep as little amount of wire as you can inside the box and try to keep them separated but this module is made for both low and high voltage wires and the pg9945 outside of the box as it can have interference with its signal.
Let us know if you have any additional questions
Thank you