Posted By
Chicken
on 2016-02-17
13:18:40
 |  Re: what is this?
I'm not sure if somebody really used his plus/4 to control a washing machine 
More likely, the EPROM (looks like one) stems from an old control board and was just reused for something else. Maybe it's not a switch to turn it on and off but to switch between two different "systems".
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