: Smart WiFi Relay Voltage: 5V Model Number: Smart WiFi Wireless Relay Switch Protect Feature: Sealed Power Source: DC Colour: Black material: plastic Contact Load: Low Power Type: Phone App Control Relay Switching Power Supply Module Usage: for Smart home Automation .Wifi wireless control switch Feature1: Timer Relay Wireless WiFi Switch Package Contents: 1 x Smart Wifi Switch 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.