Features 2 SIP accounts and 3 detachable function buttons Built-in 2.4G < 5G Wi-Fi (A10W/A10W-E) IP54 waterproof and dustproof Support HD audio with codec G.722 and Opus Built-in 2W speaker and Acoustic Echo Canceller (AEC) Built-in 1 short circuit input/output interface Support PoE power supply Support standard 86 box embedded (A10-E/A10W-E) and wall mountable(A10/A10W) installation