["C Smart" series] Use it with Type-C powered "C Smart" switch sockets and other devices, eliminating the need for data cables and helping keep your home tidy. Easy to install, modular design, and customizable. [Optimize signal quality and range] Transmits stable ZigBee signals and extends coverage up to 50m indoors, helping overcome signal obstruction caused by distance between ZigBee smart devices. (For best results, install multiple units in areas with weak signals to create a robust whole-home network.) [PA amplifier] Enables faster, more stable signal transmission with output power up to 20dB. [Compact and mini] 5.9 x 3.5 x 1.2 cm size, lightweight and space-saving. [Multiple features] 1. Signal monitoring: View real-time signal status. 2. Voice control: Compatible with Alexa and Google Assistant. 3. Offline notification: Alerts when a device goes offline, helping users stay informed about device status and improving management efficiency. 4. Device sharing: Share access with family members via mobile app. Input: DC 5V, 1A via USB-C Output power: 20dB Indoor range: 20–50m Outdoor range: Over 300m (open area) Operating temperature: –10°C to 55°C Operating humidity: 10%–90% RH Wireless protocols: 2.4 GHz IEEE 802.11b/g/n, Zigbee 3.0 Notes: 1. Requires a Zigbee gateway. For optimal performance, use with a compatible multi-mode gateway. 2. Ensure proper placement for best signal performance.