[Continuous Safety Monitoring]Our GFCI outlet sets a standard in safety with patented self-test technology conducting checks every 5 seconds, far surpassing UL's 3-hour requirement. It detects faults in a record 0.025 seconds, ensuring maximum protection against electrocution. [Child-Proof Design] your home is safe for with our tamper- GFCI outlet. Its shutter system is meticulously designed to prevent children from inserting foreign objects, adding an extra layer of safety to your family's environment. [Engineered for Endurance]Built with top-grade thermoplastic and a smart structural design, our outlet boasts superior durability. It has successfully undergone over 6000 endurance tests, doubling the UL standards, to a prolonged service life under rigorous conditions. [Installation and Safety Features]Our sleek, space-saving GFCI outlet is not only but also easier to install. It includes a screw-less wall plate and straightforward instructions, making installation swift and simple. Additionally, innovative features like surge protection consistent safety, and our Reset-Disable System prevents reset at end of life to maintain standards. The actual product may have slight color difference or difference, which not affect the use Colour:Black Material:Plastic+Metal Package Contents: 4x 15A GFCI Outlet Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.