EwelinkZigbee 3.0 USB Dongle E is a universal Zigbee USB stick. It can be used as a universal Zigbee gateway in Home Aistant or other open-source platforms via ZHA or Zigbee2MQTT to locally control all your Zigbee sub-devices, so you don't need to invest in the Zigbee hubs for different brands, all you need is a universal gateway - Dongle Plus!The dongle plus has a wide range of supported devices, such asEwelinkBASICZBR3,EwelinkS31 Lite zb,EwelinkSNZB01,EwelinkSNZB02,EwelinkSNZB03,EwelinkSNZB04,EwelinkZBMINI,EwelinkS26R2ZB , and various sub-devices from various brands or flash router firmware to extend the network range.The official firmware supports 21 direct children by default and up to 40 children. You can modify the relevant configuration to support up to 100 children. Wide Range of Supported Device Dongle can be used as a Zigbee 3.0 gateway in open-source automation platforms to manage various sub-devices from various brands or flash router firmware to extend the network range.* The official firmware supports 21 direct children by default and up to 40 children. You can modify the relevant configuration to support up to 100 children. Product Features: Pre-flashed with Z-Stack 3.x.0 coordinator firmwareCan use ZHA in Home Aistant or use Zigbee2MQTTBase on TI EZSP20dBm output gainSMA interface external antennaAluminum housing effectively reduces signal interference from peripheralsOptional 1.5m USB extension cable for better signal range Package includes : 1 * Zigbee 3.0 USB Dongle E1 * Antenna1 * User Manual