If-Off-Stay-Off Box, power loss safety device

myminifactory

The Switch-Stay-Switch box is a budget-friendly safeguard that prevents electro-mechanical devices from getting damaged after a blackout by keeping them off when the power comes back on. If unplugged and replugged, it stays OFF until you press the button (then it stays ON until unplugged again). I created this for a friend who was concerned about his fish tank filter pump, which needed manual priming to work right and would be ruined if allowed to run dry (which would happen after a power outage). Of course, an uninterruptible power supply (UPS) is the top choice for protecting devices during a blackout, but they cost around $60. Maybe you can think of alternative uses for this device; like playing practical jokes?