1. Features 2 SIP accounts and 3 detachable function buttons
2. Built-in 2.4G & 5G Wi-Fi
3. IP54 waterproof and dustproof
4. Support HD audio with codec G.722 and Opus
5. Built-in 2W speaker and Acoustic Echo Canceller (AEC)
6. Built-in 1short circuit input/output interface
7. Support PoE power supply