Usage Tips:SMALL BODY BUT HIGH POWER Supports multiple smart home platforms As a universal ZigBee gateway, it is compatible with Home Assistant or other open-source platforms via ZTA or ZigBee2MQTT, connection all of ZigBee devices. High Gain Detachable Antenna:SMA interface + 20dBm(max), 5dBi high gain detachable antenna, provides further enhance signal mission and coverage. SPECIFICATION Model: ZigBee 3.0 Gateway Dongle Output Power: 20dBm(max), 5dBi High Gain Detachable Antenna Hardware: EFR32MG21 Software: EZNet7.1.3 Compatible Platform: ZHA; OpenHAB; ZigBee2MQTT Compatible System: Raspbian, Ubuntu, Linux, Windows, and macOS Wireless Protocol: ZigBee 3.0 Working Temperature: -10℃-40℃ Dimension: 46mmx19.1mmx5mm Length of Antenna: 200mm Colour:black Material:plastic Package Contents: 1 * Antenna 1 * Adapter 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.