rs485

Hi, I have a burnt out Room Sensor on my underfloor heating. It is almost 10 years old (installed 2017) and looks like one of the grounding wires from the shielded 4 core cable wasn't insulated and must have eventually touched another wire and caused sparks. I have checked all the other room...

So I know the Pyronix Enforcer v11 panel supports a number of wired expansion devices such as wired keypads and the Euro ZEM8/ZEM8+ input expanders using the RS485 protocol. My question is how much electrical current can the Enforcer V11 handle? Is it 500mA as given by the fuse or less than...