…and now this is all more or less obsolete with the latest updates to hassio. Basically the way the zha integration handles attributes has totally changed. Now these Visonic MCT-340E sensors should just work as you’d want them to without any additional configs or battery templates. The hass devs did a nice job… their battery icons are exactly like the ones from my template. The new zha method should also help a little bit with hassos sd card issues (since now there’s a lot less data being recorded by default).