Inverter timer

[Tombola]

I got my hands on a cheap lithium battery and have a 200w mono solar panel, Ive fitted them all in my garage with an old 2000/4000 inverter to make use of them for lighting and charging my tools, plus Ive patched through to the adjoinig garage where the gym equipment and machines are is I never use , but my sons do.

Anyway, this all works fine via my inverter and 200ah battery BUT, Im sick of em leaving the invertor switched on when they use the gym ?

is there a timer maybe or some type of thing I could plug in that once they power it on via the remote cable switch it would auto shut off after say 30 mins or whatever.
Thanks

 

[frogijock]

Charge them a tenner for you having to go out to the Garage and switch everything off

 

[pappajohn]

Stop them using the gym and explain why.
They may take notice then.

Easy enough to fit a timer AFTER the inverter but I don't think it would be possible BEFORE the inverter due to the amps a timer would need to carry.