water level sensor

I have a Hydros controller and a Hydros Wi-Fi plug. I’m trying to set it up so that my ATO pump will turn off when my reservoir runs dry. I have the water sensor in the reservoir and I have alert “when dry” in the settings and I have my Wi-Fi plug programmed to that sensor, but the plug is off...

Brand new, never used BRS 300 watt titanium heater, Hydros water level sensor, Hydros ATO, JBJ ATO, Hydros rope style leak detector, Hydros 6 foot extension, magnetic heater holder/mount. 300 watt heater - $45 Hydros water level sensor - $25 Hydros ATO - $50 JBJ ATO - $65 Hydros rope leak...