I've used one of these in a pond continuously for 8 months with no problem. It doesn't do much switching though.
http://www.screwfix.com/app/sfd/cat/pro.jsp?id=18304&ts=14081
Steve
Is anybody familiar with this alarm please? I need to replace the battery.
Will all Hell break loose if I take the cover off the box? If so, how do I avoid it please?
Thanks,
Steve