Available modelsDS-PEA1-N1 Wired network10 M/100 M Self-adaptive Ethernet port Power supply12VDC Audio input1-ch Built-in Omnidirectional Microphone, Pickup Distance: 3 m Audio output1-ch 3W Build-in Loudspeaker1-ch 3.5 mm Audio Interface for External Audio Output Alarm input2 Power consumption≤ 6 W Tamper-Prooftamper alarm Netowrk interface1RJ45,10 M/100 M/1000 M self adaptive Dimension(WxHxD)170 mm× 108mm × 39.5mm(6.69" × 4.25" × 1.55") Alarm output2 ProtocolTCP/IP, RTSP, HIK-SIP,ONVIF BusRS-485 1, Half-duplex Intercom1-ch Built-in Omnidirectional Microphone, Pickup Distance: 5 m PSTN1 Audio compression code rate16Kbps;64Kbps Sound pressure110dB, Sound Can be Configured Separately SD cardStandard Micro SD card Slot, Supports Micro SD/SDHC/SDXC Card, Max. 128G