That's why it's generally safe to plug a two-prong plug into a three-prong outlet: those plugs are designed to work safely even without a grounding slot. Still, grounding matters for some devices.

Unfortunately, it’s just slightly too thick to plug two UltraPro switches into the same duplex receptacle. Maximum amperage supported is 15 amps (about 1800 watts), with connectivity via 2.4GHz ...

The Wyze Plug is a really unassuming device. It has everything a smart plug needs —- a plug to go into your current outlet, an outlet on the front to plug other devices in and connectivity to ...