Voice Control: Compatible with "" , for Home. Name: WiFi Relay Module Input: 5v Micro-USB/ DC 7-32V Output: 10A Max,4gang WIFI: IEEE 802.11 b/g 2.4GHz Colour: black Material: ABS Size: 74x74x18mm Package Contents: 4 * WiFi Relay Module Only the above package content, other products are not included. Note: Light 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.