NV4232E-16P-EI Alarm Block Pinout

[Revo2Maxx]

To be honest, I wouldn't used the Drok unless it was from a relay outsde of the Amcrest NVR.. Personally I am not sure how much current the Amcrest NVR can really take even with the info provided in the manual.

I would have to connect up my Drok to one of my power supplies to test if it is what I remember. What I think it will do is draw 2 times the current that the Drok will output.. So what I mean is that the power supply sending the Voltage to the Drok will need to provide 2 times the current that the Drok will output
Plus that drok there is a Step down module, This would be good for taking lets say 24v from like a Solar system and step down the voltage to 12v to power devices that require 12v.. So in the case of your NVR that outputs 12v the module would require you to step down to maybe 9v or 10v sometimes it is at least 2v under the incoming voltage..

I don't know if you have any older or surplus 12v PDUs if you do I would take the Power supply from the PDU and use it with an external Relay and setup your siren or Light using that. I mean I have some PDUs with 10amps, a couple that are 4amps and my main PDU is 20amps that is 16ch. Wouldn't be able to use the PDU as it is setup normally because the PCB for the cameras output isn't setup for more then a few amps. Some of them come with 3.5amp glass fuses but the cameras connecting to them are drawing less then 2amps normally..

So if you were to take the Power Supply form it, Normally a good one will have a Mean Well, Taking the power supply and setting up for a high current job is best option for doing what you want..

[Revo2Maxx]

So before we go all crazy about Power supplies and how much current you will need. I would double check what you are looking to power and test to confirm what the current you need. You might be able to just run it off the NVR..

I say this because I just checked one of my Warning LEDs that is really what some would call high output but draws a low current.. It is a 12v 12led and I have a few of them in use for warning in areas that are setup for Human tripwires. It is only 90ma on the current setup. It has like 10 different settings of how the light will work. I have it setup to flash 6 leds in a wag like mode so all 12 leds are lit but as one is on the other is starting to go off and it is setup in the light itself..

So I couldn't find the ones I bought as it has been years. But here is a listing of one that is both white and amber where mine is only amber so the Amp output is going to be less on full amber only LEDS. The White LEDS draw more current then the yellow. So these might use more current but they look like these. https://www.ebay.com/itm/402574526534?_ ... R6rhz83SZA

These have 2 different wattage ratings and might be because they offer different voltage input as well so says 10w max but also says 36w in different area. So that might be with just full lights on where they say offer 17 different designs of strobe. Like mine while less there is different output But as I said mine is kind of bright for what they are..

[Revo2Maxx]

Yeah so 720ma isn't going to hurt the system to much.. I just setup my test area on my 4216-E1 with a older 2amp style light for a car, I used in a video some time ago while dealing with how much current the Doorbell draw.. I only used 1 of the bulbs in this test tonight and the current draw it pulled was 1.85amps. I have it setup to trip on a tripwire out front but also have a panic button setup so I can test at will. With that light bulb that one would use on a car. Same type but newer style to the 1157 with Running light and the brighter element for brakes. I ran on the higher brake one and the NVR had no issue with the ground side going into the NC and out the C when triggered it lights the bulb no issue.

So powering your 720ma load will be no problem for the NVR without external relay being needed.

I did look at your Video that you had the link to, 1 thing I would do if you were to use that, I would remove the 12/24v switch and put in a jumper so the device can't be taking out of 12v mode for your setup. This way someone don't disable the system by flipping the switch.. Not sure how much they cost but if not to costly seems like a nice little relay board that can deal with 5amps.

[Revo2Maxx]

So about the 12v device current I am not sure that the numbers are really as they are stated. I mean they are talking about 30v at 2amps and 125v at 1amp and if we did the math of both of them they would be not the same. So the math on the 30vdc is = to 60w and well 1 amp of 125v is easy 125w, So in theory again using the math of I = P / V that would give us about 5amps on the relay for 12v.. So while I might be wrong, seeing I am using the lower 60w value to find my switches logical capacity so I = 60w / 12v is 5amps..

So I am clear, I am not using the 12v from the NVR, This is the 12v power supply that I am using with V+ going to the Light, and V- going to the NVR NC and C back to the light.

So I am not sure if you know what a relay is or have ever taken one apart? Most people are not into things that I am lol.. So in a Relay the contacts of a quality relay would have some high quality ends to keep the relay going at rated values over extended times. In this case with the relay able to work with 125vac and 30vdc my guess is it would have one of these type contacts. Silver Alloy, Silver Tin Oxide, or maybe even Silver Cadmium Oxide. and the last is most often found in relays for switching both AC/DC loads. Yet it might be even Silver Nickel but it is hard to say..

For a moment I was thinking I would take one of my other devices apart and look at the rated Relays if they are posted on the little case as they are most times, then thought wait that wouldn't matter because they are different companies one might have a lower quality relay then the ones used in the Amcrest NVR. While it would be easy enough to remove the screws again from the top and remove the 2 screws holding in the little alarm board I would have to take out all the wires put into the back to do so. Seeing the Push Button style is a PITA to get the wires into unless I used just straight single strand wires and I use Copper solid twisted pairs it is a pain to get them in the connecters lol..

Don't let size fool us, If you think about it there are some High current relays in cars/trucks designed to run the starter motor and blower motors so while the relays in the Amcrest NVRs are Micro in size my guess is they were built with quality materials.

[Revo2Maxx]

This is from my manual.

So that is my point about not sure the numbers are really as stated.. I mean there is Max as it says of 1 amp. Yet the 30vdc 2a and 125vac 1 amp and so on. Then in my first thought of normal math on power as i did before don't really relate to the Relay and to be honest the safe max for DC should be in the relay 2 amps. So with my testing of just the 1 bulb at under 2amps was still within the 2amp limit of the DC circuit rating.

You are correct about current flow, However short distance with low current of less then 1amp in your case it would be fine. What you would want to know is the max output of the 12v power my guess is not that great maybe 200ma or maybe even 500ma. With that the 12v would be good enough to power a External Mic or would be enough to control a external Relay. But over great distance have to worry about voltage drop and is one reason why I use External power supplies at the location of the device and the DVR/NVR alarm output for signal.

Edit: I posted above and see you posted a link. There are good points on the page you posted and some things they didn't mention as well. Like Voltage drop. With that Relay board you were looking at it sounds like you could use the Signal from the NVR as a signal and not even have to worry about voltage drop. When you have a power supply no matter 12v+ or - going though the contacts there are good and bad points for both. I normally do ground if the distance is close. Yet normally I use an external relay system to power devices that are at great distances.

They said that the 12v could do 1amp. I am not sure that is the case. But in the case of my NVR anyway I am thinking worse thing that could happen is it would burn out the 12v Voltage Regulator on the Alarm board or kill the diode on the alarm board that is mounted to the case on my NVR.. On my other 4216E-AI if I remember right it is larger board that is connected to the bottom just like the NVRs PCB is.

[Revo2Maxx]

Yes I was doing some testing and on my system the 4216-E1 the p and ctrl has very little current before there is no longer 12v, my guess is the 12v is relay voltage that would power my missing relay

[Revo2Maxx]

Yet I tested it with a 12v relay and not even enough current to power that so it's part of missing relay circuit and don't work

[Revo2Maxx]

Well in my system the relay isn't present. While I can't say about the 4232-E1 version seeing it is like my 5232E-16P and 4216E-Ai with push blocks The location of second relay in my system would interfere with mounting location. In picture I have on here you can see the 6 pin location is bare and output 1 relay is populated.

[Revo2Maxx]

Ok can you do me a favor before you buy your things as your last post are saying you have made up your mind. I am not sure if the E1 offers it, I know that my E1 don't but seeing your system is closer to my other Amcrest NVR and I can't look at them seeing they are in a remote location. I knew I should have kept me POE 4216E-Ai NVR local, But in location right now that didn't have POE switch that was working for my POE+ cameras. Anyway does you NVR offer RS-485 support on the back? On my other 2 5232 and older 4216 they both have A/B for Rs-485 and wondering if yours does? If it does can you then go look at the Alarm page of the NVR GUI/WebUI and click on the ALarm in, Then click on Network on the top. Let me know if your page has more options then what mine in the picture below shows? Or maybe it won't until after the fact but at least let me know what your page looks like if you do infact have RS-485 support on your NVR..

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[Revo2Maxx]

Well I was asking because there is a Alarm switch block that could be used from Dahua on devices with RS485, Like if you look at the picture below, Not only does my 5232E-16p have the RS232 port on the right, On the block it self there is the A and B for the RS485 and when you connect that A and B to the Dahua ARB1606 you get 6 outputs and 16 alarm inputs that would translate into the Menu there and function just like it was part of the NVR it self.

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Picture of my 5232, Now this is the older model not the E1 so anyone with the E1 that might be reading this I am not sure what is offered but seeing the 4216-E1 don't seem to have it and or the 4232E-16p-E1, don't seem to have it the RS-485 might have been removed from the E1 series. Kind of a share really..

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