Long-range contact sensor for mailbox

[rcjordan]

I did one I found on ST. It works at 200'

Mail Chime modification

I had the idea based on my Mighty Mule driveway announcer modification. I went looking and, as usual, somebody else had already done it. Works! I used the EcoLink DWZWAVE2.5 contact sensor. -update- Because I have a 'standard' size mailbox which is routinely stuffed/wedged with Amazon boxes, I elected to remotely locate the transmitter on the post and use a small magnetic switch in the jamb. Like so

there are some reviews in Amazon that indicate that it goes further, but YRMV.

https://www.amazon.com/gp/product/B00103FDDU/