Hikvision DS-kV8113 , not enough power/voltage to doorlock/eletric strike

electronized

electronized

n3wb
Dec 28, 2021
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belgioum
Hi All

I replaced my old bpt intercom system, with a hikvision ds-kv113 ( POE wired)
I took this model because it has a door unlock feature I need to use to open our front yard port with an electric strike ( 12v).
But it looks like it only get +- 5 volt at the eletric strike..

I have one cat5 cable coming up and its hard to provide additional cable ( utp or power). ( old intercom worked with the same electric strike also using the same cat5 cable..)

Do you guys know a solution?

this is how i did the wiring ( see attach1)
mine is slightly different but i did the exact same wiring (attacht2) --> connected com with 12v then "gnd" (next to12v to electric striek), and NO1 to electric strike. (also tried NC1)
 

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Is the wiring diagramm made by you ?

According to my knowledge, these devices have no 12V output.

You can power it by poe OR 12V.

There is a diode which prevent the 12V output. If you want a strike you need an AC power supply. You connect 1 wire from the ac power supply to the strike and the other one into the intercom (COM1 or NO1) and then connect another wire from the intercom (the remaining contact NO1 or COM1) to the strike.
 
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Last edited:
user8963 said:
Is the wiring diagramm made by you ?

According to my knowledge, these devices have no 12V output.

You can power it by poe OR 12V.

There is a diode which prevent the 12V output. If you want a strike you need an AC power supply. You connect 1 wire from the ac power supply to the strike and the other one into the intercom (COM1 or NO1) and then connect another wire from the intercom (the remaining contact NO1 or COM1) to the strike.
Click to expand...
ok ay thanks for the info, no diagram is from youtube video ( looks to work on his setup there... Hikvision Kis602 IP Video Intercom Phone Electromagnetic - EM Door Lock Wiring connection setup - YouTube
 
@electronized

i have one of these devices here - made a short test

so there is a voltage output on the GND and 12V pin, but it is a bit strange. It seems that they use capacitor which has to load if powered by poe.
It started at around 3,8V
after 30min it was around 8V
after 50min it was around 11.5V
and after 1 hour it was around 12.4V

I connected a 1k resistor between the wires (have no strike here) and it returned back to 12.4V after disconnecting.
I have no idea if the voltage stays after a strike was used, you have to test yourself.
Maybe it works only a few times in an hour, then have to reload ???

i never have seen something like this... not sure if this is a function or badly pcb design

voltage1.jpgvoltage2.jpg
 
I wonder if you will have to use a relay to switch a higher current supply.
Lot of strikers take more current.
 
Old Timer said:
I wonder if you will have to use a relay to switch a higher current supply.
Lot of strikers take more current.
Click to expand...

there are two relays inside the device. if you click on open door, the relay will switch

so in theory the OP is right, bridge +12v pin to COM1, connect NO1 to the strike and GND to the other pin of the strike.

i had open one device, normal small relays for maybe max 3amps @ 12V
 
user8963 said:
there are two relays inside the device. if you click on open door, the relay will switch

so in theory the OP is right, bridge +12v pin to COM1, connect NO1 to the strike and GND to the other pin of the strike.
Click to expand...
I would think so.
Do you have a way to measure the current the striker takes when powered by a good 12v supply?
Then look at the specs of the intercom and see if it will provide that much?
 
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Old Timer said:
I would think so.
Do you have a way to measure the current the striker takes when powered by a good 12v supply?
Then look at the specs of the intercom and see if it will provide that much?
Click to expand...

there are no specs. I dont think that it should even work like that...

if you think about it..

these devices are poe AF .. which means MAX 12,95W ... the device itself will take around 5-7W , so you have maybe 300-500mA left for the strike
so it makes sense that they use a capacitor for buffering.

so if too many people ring, at some point it will stop to have any remaining power for your strike.

i highly recommend to use an external power source !
 
Last edited:
i highly recommend to use an external power source !


I agree, I think you will need an external 12v source.
 
Smarti said:
I have 12vac eletric strike, Can i use a external power 220ac to 12vac?
Click to expand...
Likely, but ONLY if the contacts used in the doorbell are "dry" (no internal connection to electronic circuitry and/or voltage).
 
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Smarti said:
I have 12vac eletric strike, Can i use a external power 220ac to 12vac?
Click to expand...
And by that you mean an external power supply (stepdown transformer) with a 220vac input (primary) and 12vac output (secondary) ?
 
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