I have a neo coolcam ds01z doorsensor, which I want to use as a mail detector in my mailbox. The problem is, that the mailbox is a metal box so no signal are reaching my homey.
My idea is to connect a external antenna to the device outside the mailbox. But I don’t know where to connect it to the sensor.
has Anyone done this before and can put a picture of it here that can help me? or is there a easier way to do this?