Do my ‘Mesh Transmitters’ still need a battery to work?

The RF512M Wireless Temperature Transmitter and RF513M Wireless Temperature & Humidity Transmitter Meshing Kits still require a good working battery in order that they might continue to function as meshing devices in the event of a mains power failure.

For information on replacing the battery in your meshing transmitter please see the following article:

How do I change the battery in my Transmitter?