logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

[Solved] How do I connect the electric door strike to the HET24 Hormann controller?

qba_22 1221 19
Best answers

How can I wire a Hormann HET24 controller to operate an electric door strike from the existing door-intercom/opening circuit?

Connect the HET24 as a dry-contact button input, not as a direct power source for the strike; the strike keeps its own 12 V supply. On the Kenwei system, wire it to the lock-release button input (S1/S2, the K/open contact), and on the Blyss B-1 uniphone it was advised to connect the contact under terminals 3-4 [#17569450][#17571769][#19606863] The HET24 itself can be powered from 12 V, and 12 V was confirmed to work [#17571785] If you need a pulse stretched into a timed relay action, one suggested option was a PZ9-PM lock-opening extender or a simple time-delay relay [#17569635] The final wiring advice was confirmed as working by the original poster [#19609325]
Generated by the language model.
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
Report a violation of the law
| New topic
  • #1 17569381
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    Good morning
    While tidying up the garage I found a working HET24 Hormann module.
    I would like to open the wicket from the remote control.
    I have an electric strike and this control unit but it only gives an impulse, not a current. What else do I need to "insert" between this control unit and the lock to make it work?
    If possible, please advise me of a specific hardware solution, i.e. what I should buy so that the impulse gives a voltage of +12 to the lock.

    Thank you and best regards
    Kuba
  • ADVERTISEMENT
  • #3 17569444
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    I have the power supply but what does the power supply have to do with the relay?
    The wicket system is on a Kenwei 703 intercom.
    This HER24 relay seems to work like a button so I guess it needs to be plugged into the circuit that opens the wicket from the intercom?
  • ADVERTISEMENT
  • Helpful post
    #4 17569450
    sosarek

    Level 43  
    Posts: 83875
    Help: 9318
    Rate: 15430
    Nice of you to share with us the information that there is also Kenwei on the way - yes, it has to be connected as a lock release button (terminals S1 and S2).
    Company Account:
    Z
    Pka, Poznań, 60-850
    Helpful post? Buy me a coffee.
  • Helpful post
    #5 17569635
    CYRUS2
    Level 43  
    Posts: 17639
    Help: 1221
    Rate: 3450
    qba_22 wrote:
    I have the power supply but what does this power supply have to do with the relay ?
    You need to buy a PZ9-PM lock opening extender.
    This controller converts a short-to-ground pulse, or a positive voltage pulse, into a shorted relay tic for a specific time.
  • ADVERTISEMENT
  • #6 17569724
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    Thank you for your replies.
    I am flying to perform ;-) .
  • Helpful post
    #7 17569735
    sosarek

    Level 43  
    Posts: 83875
    Help: 9318
    Rate: 15430
    CYRUS2 wrote:
    You must buy the PZ9-PM lock opening extension.
    .
    A simple relay with a hold, nothing more.
    Company Account:
    Z
    Pka, Poznań, 60-850
    Helpful post? Buy me a coffee.
  • #8 17571068
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    Good evening
    One more problem arose before I started adding the relay.
    Well, in the existing system it turned out that the camera image is there, but there is no bell signal and the opening from the internal panel of the security doorbell.
    I have checked the power supply of the security gate and it is ok. The power supply of the internal module works. The camera works.
    No bell signal and no response to the open button

    If I solve the problem, I understand that I have to connect the het24 to the line which goes from the outer module to the control unit on the S1 and S2 lines, so to speak, between the outer module and the control unit and nothing more is needed, yes? Or can I connect it to the S-call (s+, s-) on the inner module? the latter option suits me better
  • Helpful post
    #9 17571396
    sosarek

    Level 43  
    Posts: 83875
    Help: 9318
    Rate: 15430
    Check the wiring.
    You plug in the HET as per the instructions, in series a relay with a time delay.
    Company Account:
    Z
    Pka, Poznań, 60-850
    Helpful post? Buy me a coffee.
  • #10 17571756
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    I will continue
    so there has to be an additional relay? I have an electrovalve with a memory so after a pulse it stays open until closed again.
    I don't have the manual. I have one for Kenwei, but I don't understand
    There are two places, one between the outdoor unit and the lock and the other right at the exit of the indoor unit
    Between the outdoor unit and the deadbolt there is a marking "K button to open the deadbolt optionally" and at the indoor unit "monostable normally open button"
    As I understand HET24 only gives a pulse so I can connect it under "monostable"? and this is sufficient or do I have to connect it as a K-button?
    Thanks for your patience

    Added after 12 [minutes]:

    ok s-call is out. read more
  • #11 17571769
    sosarek

    Level 43  
    Posts: 83875
    Help: 9318
    Rate: 15430
    qba_22 wrote:
    Electricity I have with memory
    .
    So relay not needed, pity you are so perfunctory with the information ;)
    qba_22 wrote:
    Between the external unit and the deadbolt is the designation "button K to open the deadbolt optionally"
    .
    And this is where you plug in with the HAT - you can use a piece of wire to short-circuit these pins and test the function - short-circuiting S1 with S2.
    qba_22 wrote:
    As I understand it, the HET24 only gives a pulse so I can connect it under "monostable"?
    .
    Yes.
    qba_22 wrote:
    is this enough or do I need to connect it as a K button?
    .
    You need to connect it under K.
    Company Account:
    Z
    Pka, Poznań, 60-850
    Helpful post? Buy me a coffee.
  • #12 17571785
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    Thanks. I am dosing the information because I am discovering more and more things myself ;-) .

    Added after 10 [hours] 13 [minutes]:

    The HET is 12-24v so 12 is probably enough for him. The name is HET24 but on the board it is 12-24V
    I have connected it to 12V and it gives a signal
  • ADVERTISEMENT
  • #13 19585331
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    Done as advised by colleagues
  • Helpful post
    #14 19604451
    lechm56
    VIP Meritorious for electroda.pl  
    Posts: 3033
    Help: 112
    Rate: 366
    The topic has been unblocked at the request of the author.
  • #15 19605041
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    Hello
    I still haven't managed to put it together. I have changed the intercom to a simple one from castorama without video
    I connected het24 to the power supply and here there is no problem. The problem is the opening of the electorail
    I have an electric strike with „memory” that is, when pressed there is a )probably) power failure. The bolt releases and stays open until the gate closes. Can this het24 relay handle this? If so, where do I plug it in?
    I have connected it directly to the deadbolt but this is not it
    Regards
    kuba
  • Helpful post
    #16 19605339
    Ircys
    Intercoms specialist  
    Posts: 6933
    Help: 1334
    Rate: 2053
    qba_22 wrote:
    I still haven't managed to put it together. I changed the intercom to a simple one from castorama without video
    I connected het24 to the power supply and here there is no problem. The problem is opening the electorail
    I have an electric strike with „memory” that is, when pressed there is a )probably) power failure. The bolt releases and stays open until the gate closes. Can this het24 relay handle this? If so, where do I plug it in?
    I have wired it directly to the deadbolt but that is not it


    And what kind of "simple intercom from Castorama" do you have?

    I gather from your description that you don't understand the operation of the electric door strike.

    Greetings
  • #17 19605795
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    The intercom is a wall-mounted intercom without a handset Blyss B-1
    It may be that I do not understand. For this reason I ask the wiser and I hope for a bit of understanding and explanation :)
  • #19 19607063
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    Ircys wrote:
    If the intercom is working properly, you connect the HET24 contact in the uniphone under 3-4.
    https://obrazki.elektroda.pl/6215286300_1566049849.png

    Greetings
    .

    thank you very much for your help
    tomorrow I will connect as you wrote
    Fortunately I have two free cables in the twisted pair gate - intercom

    kind regards
    Kuba

    Added at 10 [hours] 18 [minutes]: .

    This is another question of the naive kind …
    Do I have to het24 a separate line or can I plug in those cables that go from the intercom panel to the deadbolt?
  • #20 19609325
    qba_22
    Level 10  
    Posts: 101
    Rate: 38
    I connected according to the recommendations of user Ircys, who in fact solved the whole problem and for which I am very grateful.
    Everything is working fine. Remotes programmed and finally no need to fly home to open the gate.
    Thank you and best regards
    Kuba
| New topic
Report a violation of the law

Topic summary

✨ The discussion addresses how to connect an electric door strike to the HET24 Hormann controller, which outputs only an impulse signal without direct current. The HET24 module functions as a relay providing a pulse, requiring integration into the lock release circuit, typically between the outdoor intercom unit and the control unit on terminals S1 and S2 or the "K" button input. A power supply for the lock is necessary but separate from the relay function. For electric strikes with a "memory" (latching) function, the HET24 can be connected to the intercom's relay contacts, such as terminals 3-4 on a uniphone system, to trigger the strike. Some users recommend using a relay extender like the PZ9-PM to convert the pulse into a relay contact closure if needed. The discussion also clarifies that the HET24 operates on 12-24V and that no additional relay is strictly required if the strike and intercom wiring are compatible. Practical wiring advice includes testing by shorting S1 and S2 terminals and connecting the HET24 in series with the lock release button circuit. The solution was successfully implemented with a Blyss B-1 intercom and a Kenwei 703 system, enabling remote opening of the wicket via programmed remotes.
Generated by the language model.
Today's popular

FAQ

TL;DR: Wire the Hörmann HET24 like a door‑release across the intercom’s 2 terminals (S1–S2); "You plug in the HET as a lock release button (S1 and S2)." [Elektroda, sosarek, post #17569450]

Why it matters: This helps DIYers connect HET24 to an intercom-controlled electric strike for remote gate or wicket opening without guesswork.

Quick Facts

How do I connect a Hörmann HET24 to my intercom to open the strike?

Use the HET24 contact as the door-release button. 1) Find the intercom’s K input, terminals S1 and S2. 2) Wire HET24’s switch output across S1 and S2. 3) To test, briefly short S1 to S2 with a wire, then trigger HET24. [Elektroda, sosarek, post #17571769]

Does the HET24 power the electric door strike directly?

No. HET24 provides a contact (impulse) only. It does not supply lock voltage. Power the strike from a proper lock power supply, and let HET24 switch the door-release circuit. [Elektroda, qba_22, post #17569381]

Do I need a timer/relay if my strike has memory?

No. A memory strike releases on a pulse and stays open until the gate closes. Wire HET24 across the lock-release input, and the strike will work from the HET24 pulse. [Elektroda, sosarek, post #17571769]

What relay should I add if my strike has no memory?

Add a simple relay with a hold (time delay) so the lock stays released long enough for entry. As one expert noted, “A simple relay with a hold, nothing more.” [Elektroda, sosarek, post #17569735]

Can I use a PZ9‑PM lock opener extender with HET24?

Yes. A PZ9‑PM converts a short ground or positive pulse into a timed relay closure. Use it when your lock circuit needs a defined release time controlled from HET24’s impulse. [Elektroda, CYRUS2, post #17569635]

Which terminals do I use on a Kenwei intercom?

Use the K input terminals S1 and S2. HET24 acts like the Kenwei door-release button when wired across S1–S2. [Elektroda, sosarek, post #17569450]

Which terminals do I use on a Blyss B‑1 intercom (wall model without handset)?

Connect the HET24 contact to terminals 3 and 4 on the uniphone. That pair is the door-release button circuit. [Elektroda, Ircys, post #19606863]

Can I wire HET24 to the S‑call (call) line instead of the K input?

No. Use the door-release input, not S‑call. Connect the HET24 contact under K (S1–S2) or the equivalent door-release terminals on your intercom. [Elektroda, sosarek, post #17571769]

How do I quickly test that the intercom side is wired correctly?

Short S1 to S2 with a small wire. The strike should release. If that works, wiring the HET24 contact across S1–S2 will replicate the button action. [Elektroda, sosarek, post #17571769]

My camera works but there’s no chime and no unlock—what should I check?

Check the wiring first. Verify each conductor, terminal, and jumper. If you added a relay timer, ensure it is correctly in series and powered. Miswires cause silent failures. [Elektroda, sosarek, post #17571396]

What voltage should I power the HET24 with?

HET24 operates from 12–24 V DC. The OP confirmed 12 V powers the module and it outputs a signal reliably. Keep polarity correct. [Elektroda, qba_22, post #17571785]

I connected HET24 directly to the strike and nothing happened—why?

That’s expected. HET24 is a control contact, not a lock power source. Connect it to the intercom’s door-release circuit, and power the strike from its power supply. [Elektroda, qba_22, post #19605041]

Do I need a separate cable run for HET24, or can I share the existing release pair?

You can parallel the HET24 contact across the same door-release button pair on the uniphone (e.g., 3–4 on Blyss). A separate line is not required. [Elektroda, Ircys, post #19606863]
Generated by the language model.
ADVERTISEMENT