5-inch smart central control screen: Support touch screen, AC100-240V wide voltage, support WiFi link, built-in Alexa, and built-in zigbee gateway function. Built-in Alexa voice assistant, supports voice control, comes with zigbee gateway function, can connect to 80+ Tuya Zigbee devices. One screen realizes doorbell intercom, multi-functional central control screen, supports proximity , and frees hands. In one sentence, start the smart scene. Comprehensive hardware upgrade, giving you better choices. By adding two relays, two non-smart light bulbs can be connected, making it effortless to turn a traditional bulb into a . The added RJ45 interface and 485 interface provide more choices . Product Specifications: Product name: Smart Control Panel Input: 100-240 VAC, 50/60Hz Wireless protocol: Wi-Fi, Zigbee Working temperature: 0-40 Working humidity: 5%-90%RH non-condensing tip: Built-in Alexa and Zigbee gateway size: 127.3 x 72.5 x 36.5mm Material: plastic+metal colour: white+black Package Contents: 1 x Smart Screen Control Panel 2 x Screw 1 x needle 1 x English instructions 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.