watchdog timer for home automation

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hagna
Posts: 18
Joined: Tue Aug 19, 2008 2:39 pm

watchdog timer for home automation

Post by hagna » Wed Jul 05, 2017 4:13 pm

I'm looking for a watchdog timer in a power outlet that powers off the outlet when the time elapses. I suppose industrial applications exist. Do you know the name for this kind of thing? How are the heartbeats usually sent? I imagine PWM over a wire or some simple wireless protocol that isn't full 802.11.

Thanks

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