I am trying to modify an inexpensive PIR wireless motion sensor to bypass the PIR and add a simple on/off tilt switch to activate the transmitter. The unit works very well with long range and reliability. It's a Bunker Hill (sold through Harbor Freight) Model RL-9816B. I will attach a photo of the board. I have already attached an external antenna which works well. Now just need to figure out how to just use the transmitter, activated by an add-on tilt switch (remote to the unit) to send signal to the receiver. Any ideas appreciated! Thanks.