We put ours behind the TV, stuck to the wall with 3M Dual Lock Reclosable Fastener SJ3560. It been on the wall for three years and has never fallen. The receiver does not need line of sight with the remote it works on RF.
This fastener is the same stuff that EzPass comes with, it's very strong and removable without damage to the wall.
I'll send a pic pic if you need it.
Craig & Cath
2018 2902WS Rockwood Ultra Lite
2017 Ford F250 Lariat, 6.2 gas
Equalizer Hitch w/ 4-Point Sway Control
Days camped since 2016(retirement): 846