Low power-5VDC low voltage input LAN control-even if WiFi cannot access the Internet, you can turn on/off the device App Support - for iOS and Android mobile app eWeLink Remote on/off-turn on/off electrical equipment anytime, anywhere Sync status-real-time device status provided to the app Timing-Set the schedule/countdown timer to turn on/off at the specified time Shared control-control your smart home with your family Scene-One key to turn on/off a bunch of devices Smart scene-trigger on/off by temperature, hum or other environmental conditions of the sensor colour: green Material: Plastic Size: 34.5x25x19mm Package Contents: 10 x Relay Module Only the above package content, other products are not included. Note: Light shooting 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.