I need advice from the OP2 gurus on this sight as to an appropriate sensor to trigger an alarm when a 120v motor is turned on. My scenario is I have a hot tub out back that local vandals are using in the middle of the night and I’d like to catch them in the act (it’s not simply their use of the hot tub but rather the property they are damaging in the process). I have plenty of video cameras but there are too many false positives to rely on the motion sensor to know when I need to investigate. There are two 120v timers, one for the heater and one for the jets. I’d like to wire into each of these circuits a wireless sensor that sends me a trigger when either circuit is activated. I have a wireless receiver for my motion sensors but may need to install another to ensure it picks up the hot tub which is maybe 150 feet from the existing receiver. Presumably the sensor would be on the downside of each circuit and would only activate when the timer is activated to turn on the respective pumps.