Hi @blutch32,
Thank you for the detailed interview data. Your PJ-1203A (`_TZE284_81yrt3lo`) is correctly identified.
The issue with undefined values causing crashes has been **fixed in v5.7.7+** (current: v5.7.8).
**Please try:**
1. Update the app to v5.7.8 via Homey App Store
2. After update, **remove and re-pair** the device
3. Make sure the CT clamps are properly connected to the wires
The undefined values suggest the device may not be receiving current readings from the CT clamps. After updating and re-pairing, if values still show 0, please check:
- CT clamp orientation (arrow should point toward load)
- CT clamps are fully closed around the wire
- Send a new diagnostic report after re-pairing
Let me know if the issue persists after these steps.
