TAMPER RESISTANT OUTLETS: Duplex socket features tamper-resistant shutters to prevent children from inserting any unwanted objects into the outlets; Improved safety and comply with NEC requirement UNIVERSAL COMPATIBILITY: Two USB ports compatible with smartphones, tablets, e-readers, bluetooth headphones and other USB-powered gadgets, without the need for additional adapters or power bricks EASY TO USE: Wall outlet has two USB ports with a total output of 5 V DC, 4.8 A; Directly charge most devices and meets a variety of charging requirements to make sure your devices are charged at blazing-fast speeds SPACE-SAVING: The USB wall plug combine traditional AC outlets with built-in USB ports, offering a versatile charging solution for all your devices; The devices save space, making it an ideal choice for rooms with limited wall space SMART CHIP: USB wall charger is equipped with a smart chip that can identify and optimize the charging current of the device, preventing overcharging