NV4232E-16P-EI Alarm Block Pinout

[katienelson71753]

Can anyone provide a detailed pinout of the Amcrest NV4232E-16P-EI NVR ?
I just purchased one on Amazon.com. I'd like to know what each one of the terminals is.

I found a tutorial on CCTV World but I'd like to confirm from Amcrest that this isn't going to fry my brand new NVR.
The technical specifications https://drive.google.com/file/d/1eLPFzf ... JNl3I/view
Shows it has (Alarm input 4 channels) (Alarm output 2 channels)

I can't find any info on what the bottom first 2 terminals are for CTRL and P.
I'm asking because if the attached picture is correct, I'd like to use the 2nd alarm 12v out to a step down module that has leads to an led keystone jack insert. (A silent alarm). I'm not sure though which terminals should be used for alarm 2 though?

[katienelson71753]

I could probably take a multi tester and switch the firmware between alarm 1 and alarm 2 output and measure for a voltage change.
I would like to know first that CCTV World is accurate on providing the 12v power supply like is show in the image. Otherwise the multi tester
should be able to simply measure the output voltage. That said, I'd be depending on a company that didn't manufacture the NVR.

[Revo2Maxx]

I don't know what CCTV World is using for a NVR but the wiring you have in the picture is a no go.. Or at least for me anyway.. Now I don't know about the pin out of your NVR seeing I have a couple of NVRs and the pin out is like what your showing but don't work as expected..

First so you know, NO1 is Normally Open 1 then C1 is common 1. When I used it on my 4216E-AI NVR I used NO1 and C1 for my contact. Then CTRL was odd duck and was really NO2 for the second alarm output..

It has been a while since I have setup my alarms. I have my Alarm output NVRs right now in remote to my current location so I can't confirm. But if you have a multi meter here is what I would do. Put a lead on NO1 and one on C1 then using your NVR enable the alarm your multi meter should show a short at that time and if set to buzzer should beep. This is because that No aka Normally Open is now closed when you enable it.

So then when you wire an alarm horn you will want to put your 12v to the red going directly to the Horn, Then on NO1 and C1 you will want to connect the ground from power supply to NO1 and the wire going to the horn to C1. Then what this does is it will make a complete circuit for the power to the alarm horn and it will sound.

Now when it comes to setup of the alarms you will need to setup the output in your cameras. Lets say you have 4 zones setup to trigger your alarm, You can then use the system for the cameras event to trigger the zone 1 or Alarm 1 for the NVR. Keep in mind that I would only use an alarm horn in an area that uses IVS rules with filters enabled. If you setup for motion and this means that anytime anything like leaves, rain, snow bugs or anything that crosses will be setting off the alarm. With IVS you are at least 94% sure that it is going to go off for a real reason.

Note, If you happen to use your system as being monitored, I would put in a panic button setup rather then having your cameras control the event. This way you know for sure it will go off for a real reason and not make people that hear it over and over no longer pay attention to the alarm. You would setup the NVR input with a momentary switch that when you press the switch it sets off the alarm. Then in the alarm output page you will setup how long you want it to go off and can even setup what times of day.. Just some ideas..

[katienelson71753]

The tutorial I mentioned:
https://www.cctvcameraworld.com/connect ... ra-system/

I'm taking notes on all that you said though.

I'm questioning this video and it's similarity to my model NVR:
https://youtu.be/gs87-zx8vn0

[katienelson71753]

So if I understood you correctly the following with or without an inline switch should be the correct wiring?
That said if I don't add the horn and use a multi tester negative probe at C1 then the other coming from the 12v power supply red and trigger an event then I should see a voltage jump on the multi meter..

[katienelson71753]

If that's accurate shouldn't I be able to use the same ground from the 12v power supply to NO2 (CTRL) and the 2nd alarm such as a 12v flood lamp's ground to P (C2)?

[Revo2Maxx]

His video is how my 4216E-AI NVR works. Also his NVR is the same 4216E, is Dahua and something that is what my Amcrest 4216E-AI NVR is modeled after. Now your NVR being the 42xx series but in i3 model, this is newer then my first Gen AI but again modeled after it. So I would guess that his Setup and the way that I also setup mine is how yours should still work..

What is important if you were to choose to power a device I think the mini relay has a 1amp output ability and for some using the 12v should be fine, Personally I don't do that I use the Contacts this way. Some choose to do this because better to cut off power + side of the wires incase there is a short down stream of the NVR. For me I fuse everything so it don't matter.


About your wiring showing ground going to the ground of the NVR I don't understand why they would do this unless there was some issue with Ground loops. Personally don't know. I only use the No1 and C1 on my NVR for my outputs.

One thing to note, Looking at my manual, it has 1amp for relay and my guess is that yours would as well. IF you are going to use something that requires more then 1amp of output for your siren, I would connect it to a Bosch relay from the NVR rather then off the NVR..

For my setup it is less then 90ma with the circuit I build for my Alarm outputs so not an issue. I don't know what your intentions are so I wanted to make sure you know there is an output limit of the small built in relays.

So as I went to post I seen your other post.

yes that is how I would do it without the inline switch. not sure why that is there.. In theory that inline switch would not cause the system to go off if it was open. Maybe that is something you have or want to put in place to make it so your alarms are not going off when you are in the cameras area of interest.. Like mowing the lawn or entering your shed.

About your second question. The ground that is powering the flood lamp needs to be the same power supply of the 12v source. So if you are going to power both devices off the same 12v power supply and both of the devices don't draw more then 1amp then yes the second output could have same ground input for both devices. Just need a second ground wire from the c2. This will in effect close the circuit to power that output if enabled.

[Revo2Maxx]

Also I would double check that the CTRL and P are truly No2 and C2 because I do have another brand NVR that does offer them and they are powered options not just the Contacts like my 4216E-AI is. Seeing your NVR offers 2 outputs like mine, I am going to guess it is just a normal closed when triggered switch but again i would double check by testing it..

[katienelson71753]

I found this in the manual then searched for the specifications pdf but it doesn't really tell me anything.
This doesn't match with my alarm block though.
Mine has:

NO1 C1 GND 1 2 GND
CTRL P GND 3 4 GND

If I've understood this correctly then the 1-4 are zones but I'm not certain exactly how that relates to them on the block.
So then NO1 and C1 should still be Alarm 1 and because it has 2 alarms, same as you said CTRL P should be alarm 2.

Racking my brain here but it would stand to reason by the diagram using 1 and 2 then what of 3 and 4? Does it have 2 alarms or 4?
Because everything I've read suggest only 2 alarms but 4 zones. That would mean I could use like front of house cam, back of house cam, and both sides as zones then they could have tripwires that activate the alarm.

[katienelson71753]

This is from the specifications pdf for my model:
So
NO1 C1
CTRL P
has to be those 2 channels and 1-4 the inputs.