Looking for Smart Retrofit Solution for PEHA-JRM950 Shutter Controller (24V DC Input + 220V AC Output)

Hardware
1

Hi everyone,

I’m currently using a PEHA-JRM950 rail-mounted shutter controller. It has a bit of an unusual setup:
• The physical wall switches (momentary buttons) are powered by 24V DC, provided by the PEHA unit itself.
• The motors are controlled via 220V AC switching.

Now here’s my challenge: I want to make my shutters smart and integrate them with Home Assistant, but I haven’t found any Shelly or other compact smart relays that can handle this dual-voltage setup without using coupling relays. Most smart devices expect low-voltage inputs or they don’t isolate well between input and output circuits.

Ideally, I want to:
• Keep using the existing wall switches
• Add smart control via Home Assistant
• Avoid complex relay wiring if possible

Has anyone here solved a similar problem or knows of a suitable device that accepts 24V DC control input and switches 220V AC for the motors?

I’d really appreciate your input—this one’s got me scratching my head!

Best regards,
Jörg

2

Can’t you just replace (add to) the wall switches? That way everything would be 24V.

The “Shelly 2PM Gen3” (black) would be a perfect solution for that. It can be powered by 24V DC, has 2 inputs, 2 outputs that can be configured for motor control, and understands shutter positioning.

Edit: In case I wasn’t clear: I mean wire that 2PM between the existing switches and the control unit.

image
image1647×1107 47.1 KB

3

Maybe this can help:

https://github.com/TillFleisch/ESPHome-PHC-Controller

or this

https://phc-forum.de/index.php/phc2mqtt/266-phc2mqtt