I tested this unit by plugging it into an ungrounded 2-prong wall outlet. The device powers the load (high resistance heater). It will not cut off power if the power supply is not grounded, nor will it protect sensitive electronic equipment from damage from static electricity build-up caused by a failed power supply.
Xiaomi BHR5846GL Redmi Buds 4 Wireless Headphones White, white
50 Review
Pirelli P Zero 275/35 R20 102Y summer
64 Review
Smart socket Xiaomi ZNCZ05CM Mi
73 Review
10PCS Rhymad Conductor Compact Lever Connectors With Fixed Base, 28-12 AWG Electrical Wire Terminals For 2 Circuit Inline Splices (SPL-2)
43 Review