Available modelsDS-PEA2-21 Wired network10 M/100 M Self-adaptive Ethernet port Power supply110-220V AC Audio input1-ch Built-in Omnidirectional Microphone, Pickup Distance: 5 m1-ch 3.5 mm Audio Interface for External Audio Input Audio output1-ch 30 W Build-in Loudspeaker1-ch 3.5 mm Audio Interface for External Audio Output Alarm input2 Tamper-Prooftamper alarm Netowrk interface1RJ45,10 M/100 M/1000 M self adaptive Dimension(WxHxD)Without Bracket: 450 mm × 500 mm × 2205 mm (17.72” × 19.69” × 86.81")With Bracket: 450 mm × 500 mm × 4500 mm (17.72” × 19.69” × 177.17”) Alarm output2 ProtocolTCP/IP, RTSP, SNMP, HIK-SIP,ONVIF BusRS-485 1, Half-duplex Frame rate25fps Intercom1-ch Built-in Omnidirectional Microphone, Pickup Distance: 5 m Siren1, Sound Can be Configured Separately Lamp1, Light Can be Configured Separately PSTN1 Resolusion1920*1080 Day/night switch modeIR Cut Filter Audio compression code rate64Kbps;16Kbps Camera2 MP HD IR Camera