PoE: PoE(IEEE 802.3at class 4)，MAX：15W. input amplitude: 3.3 Vpp, input impedance: 4.7 KΩ, interface type: non-equilibrium. Audio Type Mono sound. Alarm 1 input, 1 output (max. 24 VDC/24 VAC, 1 A). Audio Compression G.711/G.722.1/G.726/MP2L2/PCM/MP3/AAC-LC.
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