On February 16, 2018 at 18:41, Fins said...
I’m looking at this transmitter because there is so much wildlife around, the motion sensor will be going off constantly
[Link: dakotaalert.com]That's the one I use.
An older version used a 9v battery but the most recent one I purchased uses the CR123 batteries.
A set of lithium's ought to last a could long while.
Frederick