DS-2DE2A404IW-DE3 built-in microphone?

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I purchased a bunch of DS-2DE2A404IW-DE3 cameras the other day. Per the specs on the website: DS-2DE2A404IW-DE3/W|Value Series|Hikvision . They list the cameras as having a mic line in, line out and "built in mic" . I am on the current firmware and when I go to the configuration settings and then audio there is no option to select the "built in mic", there is only a "line in" option. I did enable Video and audio on both the main stream and sub stream but it appears that the camera does not come with a built in mic. Is this correct or am I just going crazy?

Question number 2:
If there is no built in mic i was looking at adding a few of the DS-2FP2020 active mics. My plan is to split the POE connection at the camera and tap the power for the mic. My plan is to use these adapters to make it work. Can anyone advise if this would work?

Connect this to the POE line:

Amazon.com: TNP RJ45 Ethernet Cable Combiner/Splitter Kit (2 Pair) - 2 Male to 1 Female POE Data Adapter LAN Ethernet Network Extender Y Splitter Cat5 Cat5e Cat6 UPOE Cable for Surveillance Security Monitoring: Home Audio & Theater

Amazon.com: TNP RJ45 Ethernet Cable Combiner/Splitter Kit (2 Pair) - 2 Male to 1 Female POE Data Adapter LAN Ethernet Network Extender Y Splitter Cat5 Cat5e Cat6 UPOE Cable for Surveillance Security Monitoring: Home Audio & Theater

smile.amazon.com

then use this to split to POE for the camera and a barrel adapter for the Mic:

Amazon.com: ANVISION 4-Pack Active 48V to 12V Waterproof PoE Splitter Adapter, IEEE 802.3af Compliant 10/100Mbps for IP Camera AP Voip Phone and More, White: Computers & Accessories

Amazon.com: ANVISION 4-Pack Active 48V to 12V Waterproof PoE Splitter Adapter, IEEE 802.3af Compliant 10/100Mbps for IP Camera AP Voip Phone and More, White: Computers & Accessories

smile.amazon.com

Then this to break out the barrel adapter cleanly:

Amazon.com: 10 Male and 10 Female 12v DC Power Jack Adapter Connector for Led Strip CCTV Camera : Electronics

Buy 10 Male and 10 Female 12v DC Power Jack Adapter Connector for Led Strip CCTV Camera: Surveillance Camera Cables - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

smile.amazon.com

 

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Anyone?

 

[Bob Hsu]

DS-2DE2A404IW-DE3/W comes with Built-in Microphone and WiFi&PoE functions.
DS-2DE2A404IW-DE3 has not these functions.

 

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Thank you very much for clarifying Bob!