On 27/01/2019 21:55, Andy Burns wrote:
Bob Eager wrote:

Bill Wright wrote:

Like a lot of other people with CCTV that can be viewed over the
internet, I need to remotely power cycle the modem now and then. Ideas?

USB operated relays are readily available, and they handle mains.
Or use one of the SONOFF switches - see eBay - that work from an app (can
be hacked to have a webserver instead).

Presumably the need to reboot the modem is because the internet
connection is up the spout when Bill wants to view his CCTV from afar?
So something that can reboot the modem e.g. via SMS would be more helpful?

Stick a Raspberry Pi with a relay onto the network. Ping an outside
address once every minute and if nothing is returned for 5 consecutive
minutes, use the relay to power cycle the modem/router.

SteveW