Water level sensor, indicator circuit diagram. Advertisement. ... Switches S1 and S2 can be used to switch on and switch off, respectively, the pump manually. ... circuit diagrams and crazy projects ...

If switches aren’t your thing, Aqara is launching a new smart sensor that can control your lights automatically. The battery-operated Presence Multi-Sensor FP300 packs five sensors: PRI, mmWave ...

Most smart light switches require a neutral wire to work. As this wiring wasn’t standard in homes until the mid-1980s many houses have limited options for upgrading to smart switches.