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..
NV4232E-16P-EI Alarm Block Pinout
Re: NV4232E-16P-EI Alarm Block Pinout
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.
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.
Be Safe.
Re: NV4232E-16P-EI Alarm Block Pinout
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..
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Re: NV4232E-16P-EI Alarm Block Pinout
Yes as I was saying. However again seeing your NVR is a I3 I would still double check the contacts. Sorry saying Contacts again because the No1 and C1 would be a Contact. This would be a Single pole dry contact. Sorry.. So yes using either 12v or the ground would be fine going to your No1 and C1, When triggered it will set off what every that *Contact* makes the connection to. Yet as I said if the output of the device is more then the rated Relay contact then you will want to use a better higher value external Relay to power the devices..
Note, If you were to use a device that is using 4amp of current, The relay in the NVR will work for a short time.*Don't know how long depends on a few different factors* Once it burnt through the relay inside would be damage and no longer work. Might still hear it switch on and off but would no longer make Contact.. To get round this you would use the NVRs output from the relay to trigger a larger relay that could support the current draw needed for your Light.. Understand I use this info because normally people are using 12v 50w or more watt lights and doing so would be over 4amps of current and that would over load the NVRs contact..
About his video better explains what I was trying to say..
Also as I was saying before not covered in that video, Using 1, 2, 3, 4, along with one of the grounds on the system I would use if in high traffic area and if system is monitored. A panic button if you will on lets say Input 1 and the ground next to it. Setting that up when you press the button if setup in the NVR could trigger your Alarm siren. So say it like this. Having a light come on to 1 help with night time events to get better footage of an event is great and don't have to worry about setting off a Siren when you don't want it to go off. For me if an alarm is always going off, after a short time of someone looking to see what it is, people even yourself might start to ignore it. Thinking that the issue is just like all the other times you looked. Yet if on a switch and when there is someone that don't belong there the alarm is heard people will look because every time they have looked in the past there was a real reason for it going off..
Also lets say you had setup on your Front door, If someone that was coming by to visit and maybe you didn't know they were coming over setting off the siren isn't needed, Same if you had for people delivering your packages, After a while you might end up having your package left at an area you don't want them because the driver can learn where the alarm goes off and just put it outside that detection area..
Note, If you were to use a device that is using 4amp of current, The relay in the NVR will work for a short time.*Don't know how long depends on a few different factors* Once it burnt through the relay inside would be damage and no longer work. Might still hear it switch on and off but would no longer make Contact.. To get round this you would use the NVRs output from the relay to trigger a larger relay that could support the current draw needed for your Light.. Understand I use this info because normally people are using 12v 50w or more watt lights and doing so would be over 4amps of current and that would over load the NVRs contact..
About his video better explains what I was trying to say..
Also as I was saying before not covered in that video, Using 1, 2, 3, 4, along with one of the grounds on the system I would use if in high traffic area and if system is monitored. A panic button if you will on lets say Input 1 and the ground next to it. Setting that up when you press the button if setup in the NVR could trigger your Alarm siren. So say it like this. Having a light come on to 1 help with night time events to get better footage of an event is great and don't have to worry about setting off a Siren when you don't want it to go off. For me if an alarm is always going off, after a short time of someone looking to see what it is, people even yourself might start to ignore it. Thinking that the issue is just like all the other times you looked. Yet if on a switch and when there is someone that don't belong there the alarm is heard people will look because every time they have looked in the past there was a real reason for it going off..
Also lets say you had setup on your Front door, If someone that was coming by to visit and maybe you didn't know they were coming over setting off the siren isn't needed, Same if you had for people delivering your packages, After a while you might end up having your package left at an area you don't want them because the driver can learn where the alarm goes off and just put it outside that detection area..
Be Safe.
Re: NV4232E-16P-EI Alarm Block Pinout
About the Relays, I don't know this Ebay listing owner and was just picked at random. But this is a 5 pin Bosch type relay that had a Diagram on the side for what the pins do. https://www.ebay.com/itm/166042621706?_ ... R97Rg6LSZA
About relay wiring diagram There is many different ways to connect a Relay. In a 5 pin 87a is at rest in connection with 30. and what this means is anything that is at pin 30 lets say your 12v high current it will power the other side of 87a. When 85 and 86 pins trigger in this case off the output from the NVR it will move the Switch to 87 and power what ever is connected to the other end of that like a high power 12v light. If there is no need for a center pin relay you can get a 4 pin relay and then there is no 87a and only thing that will happen is when 85 and 86 trigger it will connect 87 to pin 30..
So pins
Pin 30 12v + high current
Pin 87a Output to maybe a 12v Led at Monitor station as a This is ready (If that light is off then output has triggered or fault in wiring)
Pin 87 This is Output to High power alarm or light
Pin 86 12v+ from smaller output like 300ma
Pin 85 Ground.
So why I said it can be wired different is because the Ground from the NVR could be what triggers the relay at pin 85 or if there is a 12v but low current switch then that + would be the trigger point and the ground would be constant on the relay. However if the Relay is just passing a ground then the 12v at pin 86 would be constant and the Ground pin 85 would trigger the relay..
Next in some cases 85 and 86 can be wired either way. Keep in mind however there are some relays out there that do infact have a built in diode for spike suppression and then the wiring to the pins need to go with the ground to the right pin. When you look at the side of the relay for a diagram normally it would show a connected area between 85 and 86 with the line in the direction of ground normally Pin85 so even ones without the Diode I always use 85 for ground Normally. There are some cases for wiring ease that I don't on relays without the diode. In some cases when there is no diode in a Relay I would install my own again to suppress the voltage spike that might happen when the coil of the relay de-energizes. Not always used or needed but good idea.
About relay wiring diagram There is many different ways to connect a Relay. In a 5 pin 87a is at rest in connection with 30. and what this means is anything that is at pin 30 lets say your 12v high current it will power the other side of 87a. When 85 and 86 pins trigger in this case off the output from the NVR it will move the Switch to 87 and power what ever is connected to the other end of that like a high power 12v light. If there is no need for a center pin relay you can get a 4 pin relay and then there is no 87a and only thing that will happen is when 85 and 86 trigger it will connect 87 to pin 30..
So pins
Pin 30 12v + high current
Pin 87a Output to maybe a 12v Led at Monitor station as a This is ready (If that light is off then output has triggered or fault in wiring)
Pin 87 This is Output to High power alarm or light
Pin 86 12v+ from smaller output like 300ma
Pin 85 Ground.
So why I said it can be wired different is because the Ground from the NVR could be what triggers the relay at pin 85 or if there is a 12v but low current switch then that + would be the trigger point and the ground would be constant on the relay. However if the Relay is just passing a ground then the 12v at pin 86 would be constant and the Ground pin 85 would trigger the relay..
Next in some cases 85 and 86 can be wired either way. Keep in mind however there are some relays out there that do infact have a built in diode for spike suppression and then the wiring to the pins need to go with the ground to the right pin. When you look at the side of the relay for a diagram normally it would show a connected area between 85 and 86 with the line in the direction of ground normally Pin85 so even ones without the Diode I always use 85 for ground Normally. There are some cases for wiring ease that I don't on relays without the diode. In some cases when there is no diode in a Relay I would install my own again to suppress the voltage spike that might happen when the coil of the relay de-energizes. Not always used or needed but good idea.
Be Safe.
Re: NV4232E-16P-EI Alarm Block Pinout
Change over relay is just a name they have for it. 40/50amps I am not 100% sure they are really that..
Then the Relay has something I am not sure about the 1MIN what is that? Does that mean it would only work at 40/50amp for up to 1 min.. Personally wouldn't work for me..
Bosch, Install Bay, Tyco are a few I have, and used others. But in truth a siren and LED light isn't going to need much current so 40/50amp relay is kind of over kill.. I mean even a 100watt led light wouldn't require such a relay.. I mean 100w 12v led light would take less then 10amps to run..
Then the Relay has something I am not sure about the 1MIN what is that? Does that mean it would only work at 40/50amp for up to 1 min.. Personally wouldn't work for me..
Bosch, Install Bay, Tyco are a few I have, and used others. But in truth a siren and LED light isn't going to need much current so 40/50amp relay is kind of over kill.. I mean even a 100watt led light wouldn't require such a relay.. I mean 100w 12v led light would take less then 10amps to run..
Be Safe.
Re: NV4232E-16P-EI Alarm Block Pinout
So my 5232E-16P and my 4216E-Ai are both at one of my other locations so I can't test them. Right now I have my 4216-E1 and it has block like one of your pictures Grey with push pin connectors... by the way I posted about how I don't like this type connector lol. After much work lol testing out my nvr that has 4 inputs and says 2 outputs there is only 1 output and ctrl and P both are 12v I will admit that it does power some leds. They are only 110ma but are very bright. I didn't use that with the output alarm seeing it's easier at location of power connection for light. Took ground wire, added in No to ground wire of power supply and second wire from C and placed on ground side if Led lights. Set up Alarm in 4 as panic button and set up my nvr on button press to alarm out port1 and worked like expected.
Now 1 thing I did was tested out 2 that is missing from case writing, same push button only for out 2 and when active and after time passes there is no click from inside NVR that you can hear from output1. So either there is only 1 relay or output 2 relay isn't in firmware to turn on ill have to move cameras to another NVR and take it apart and look at the alarm board see if there is 2 relays or not.
So not sure what cameras you are using, some of the higher ones have alarm in and out at the camera. In some cases using those output or even in is better because it's at camera site and requires less wiring.
Now 1 thing I did was tested out 2 that is missing from case writing, same push button only for out 2 and when active and after time passes there is no click from inside NVR that you can hear from output1. So either there is only 1 relay or output 2 relay isn't in firmware to turn on ill have to move cameras to another NVR and take it apart and look at the alarm board see if there is 2 relays or not.
So not sure what cameras you are using, some of the higher ones have alarm in and out at the camera. In some cases using those output or even in is better because it's at camera site and requires less wiring.
Be Safe.
Re: NV4232E-16P-EI Alarm Block Pinout
So took the top off and sure enough there is only 1 relay in my 4216-E1 nvr even though my manual, specs and GUI says there is 2 alarm out there is only 1 connected on the alarm board
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Re: NV4232E-16P-EI Alarm Block Pinout
Here is pictures of alarm board you can see the one with X has nothing soldered where relay goes.
- 20241016_024553.jpg (1.14 MiB) Viewed 1855 times
- 20241016_024608.jpg (1.21 MiB) Viewed 1855 times
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Re: NV4232E-16P-EI Alarm Block Pinout
Here is another brand 16ch poe 4k Ai NVR, this one only has one output and 4 in and has 4in, 1 gnd the output pair and that's it, nothing funny or extra on the board. Push pin type so don't like it over my 4216E-Ai and my 5232E-16P nvrs that has the connecting blocks that you push in. Easy to add in the wiring with the block type
- 20241016_030336.jpg (1.4 MiB) Viewed 1855 times
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