Boasting timer, memory and voice control capabilities, this switch is a pragmatic smart home device. With communication capabilities, this smart switch can be linked to another switch module in your home to set sleep mode, work mode, etc. It is constructed of pc material. The length of this product is 3.92cm, the width is 3.92cm and the height is 1.8cm. The switch is suitable for home, office, and hotel, etc. Item Name: Intelligent Switch Material: PC Features: Manual Voice-control, Status Memory, Countdown Function 1 Gang: One-opening Works with ZigBee 3.0 Switch Module Neutral Wire 1 Circuit 2 Gang: Two-opening Works with ZigBee 3.0 Switch Module Neutral Wire 2 Circuit 3 Gang: Three-opening Works with ZigBee 3.0 Switch Module Neutral Wire 3 Circuit 4 Gang: Four-opening Works with ZigBee 3.0 Switch Module Neutral Wire 4 Circuit Voltage: AC200-240V 50/60Hz Maximum Load: 10-100W Operating Frequency: 2405 GHz-2480 GHz IEEE802.15.4 Operating Temperature: -10 Degrees Celsius - 40 Degrees Celsius Protocol: Works with ZigBee 3.0 Working Range: Less Than 100m IP Rating: IP20 One-opening: LED250W 10A Two-opening: LED2X150W 2x5A Three-opening: LED3x150W 3x3.3A Four-opening: LED4x150W 4x2.5A Size Details: LxWxH: 3.92cm x 3.92cm x 1.8cm/1.54" x 1.54" x 0.71"(Approx.) Notes: It need to be used with a gateway. Please turn off the power during installation. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Intelligent Switch 1 x User Manual