Working Mode Works with Tuya ZigBee Hub or other ZigBee Hubs based on Tuya Platform. ZigBee Door Sensor also can directly add to ZigBee Alexa Echo Show, and Alexa Echo Plus without a hub. Voice Control to ask Alexa " ALEXA,IS DOOR SENSOR OPEN" NOTE: MAKE SURE YOUR ALEXA DEVICE SUPPORTS ZIGBEE 3.0 PROTOCOL ZigBee One-Gang Fire Wire Switch Touch Panel ConnectLIVE LINEPower Supply 2.4G WIFI connection Set Smart Scenario with other Tuya Platform products Linkage Alarm Input voltage: 100V-240V AC 50-60Hz; Current: 1 A ; Rated Power:INC:10-200W, LED:3W-100W Works with Alexa, Google and TuyaSmart or Smart Life APP