Tuya Smart Gateway Hub Smart Home Bridge WIFI Remote Control Switch 1ch 2ch 4ch Relay Module Work with Gateway Alexa Product Features: 1.A must for all products:This is a hub that connects to a variety of smart products and is the bridge,as well as a control center for smart homes,which plays an irreplaceable role for all products. 2.Wide Compatibility:3.0 smart products are well compatible with the gateway hub,allowing you to customize your systems depending on your individual needs and security requirements,which allows to control your all house appliances in one App. 3.App Smart and Remote Control:Adding devices,device reset,third-party control and group control to meet the needs of smart applications,are all supported by the hub.Simply use your smart phone to control remote security kit system connected to the hub anytime,anywhere. 4.Stable and Reliable Wireless Networking:WiFi signal covers a wide range of areas that is stable and reliable enough for normal work of any connected devices to the hub. 5.Easy to Fit:The smart gateway hub is designed with absolutely no wiring required and an extremely quick simple WiFi setup,no professional technical skills needed.And there is another network cable for the wired version to connect the WiFi router additionally. Parameter: APP:Smart Life Tuya App Wireless Connection:ZigBee WiFi Frequency:2.4GHz Total Number Connected:50 for wireless,300 for wired Working Temperature:-10C~55C Adapter Output:5V 1A Working Humidity:10%-90% RH (no condensation) Package Listing: Tuya Gateway Hub*1 USB Cable*1 Quick User Guide*1 Q&A: 1.Q:Does this hub work with 3.0 products? A:Yes,it can not only work with tuya products,but also 3.0 ones. 2.Q:Can this hub control WiFi smart products in the same app? A:This hub can form a whole house linkage for all the products in your same one app for the hub is connected via the wifi router. 3.Q:Does it work with Alexa echo? A:Yes,it's compatible with Alexa for voice control,as well as Google Home. 4.Q:What is the protocol for this hub? A:and 3.0 protocol are both fine. Wifi Switch Parameters: lnput voltage: DC/AC 7V~32V Max.Current:2200W/10A wireless Standard:Zigbee Working temperature: -20~70 Size: 69*41*20mm Checklist before using the device You need to have a gateway. Try to be close to the gateway when pairing. 433MHz Remote Control: Operating voltage: DC12V (27A/12V Without battery) Transmitting frequency: 433MHz Encoding Type: Learning code Transmission distance : 10-100M (Open field) Free screwdriver