Right. So I’m assuming you have Homey. I wouldn’t use a Smart Implant to do that. Just get a simple Aeotec Door/Window sensor. No wires, no power supply etc.
If he has connection problems in that section, it’s also better for the mesh. So why not!?
@WouterV another option to solve the connection problems is to install an actuator/repeater nearby and continue using the sensor.
But of course I don’t know how your mesh is currently built, how many actuators/repeaters you use and so on.
In the end you have to try out which solution works for you.