"F" news@nowhere wrote in message
o.uk...
On 08/06/2016 23:06, Capitol wrote:

Use a mechanical timer. IME digital timers are a pain.

I chose digital for the battery backup.

Is the timer because the tank was boiling when the immersion was left on or
for convenience to save you manually switching the HW on and off?

If you are still happy to use a switch and are just forgetting to turn it
off then you might be better using something like

https://www.tlc-direct.co.uk/Products/SMTGBT4.html



--
Adam