On 17/11/2020 17:17, Martin Brown wrote:

Not dissimilar to an oil tank Watchman and the batteries typically last
a few years so it isn't much of a hassle.

Official Watchman replacement batteries are a ripoff though but tear
down instructions for rep[lacing one are available on Utube.


My Watchman. instruction leaflet included battery replacement
instructions. Just a standard CR2430 from eBay.


--
djc

(–€Ì¿Ä¹Ì¯–€Ì¿ Ì¿)
No low-hanging fruit, just a lot of small berries up a tall tree.