Attention: This device only support 2G/4G, don't support 3G. GSM control ignores distance and time, you can control equipment at any time and receive alarm SMS. APP CONTROL: APP control equipment is convenient, intelligent and handy. Intelligent door opener, your smart butler. Timing control (Up to 24 groups), Choose daily or single day. Power failure Alert: When the power failure or power restoration you can receive a SMS/APP/Email Alert. E-Mail Pushing: When the device is powered off or the door is opened, Can receive notification emails. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC110-240V Color:As Shown Material:Metal Package Contents: 1 * Controller 1 * Antenna 1 * Power cable 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.