Hi @user5034 ,
Please update to HE platform version 2.3.5.135 and pair the P1 sensor again to your C-8 hub.
After re-pairing, you can search the device live logs for the text "Parent NWK is"
This is the short address of the Zigbee repeating device that P1 is using to connect to the hub. Due to security concerns it is not possible to obtain the device name from a user driver, but you can find what this repeater is by searching for the Parent NWK 4 digits ID. In your case :
Parent NWK is 974A
Go to HE Settings -> Zigbee details and search the web page for 974A.
This is the repeater used by P1 to reach the hub. Make sure this device is operational / online / not switched off.
What model/make is it?
