How to connect two keypads to an ORNO digital lock with one electric door strike?

Hello,
I have this problem. Friends have a door lock in a shop warehouse for an electric door opener with an ORNO numeric keypad. Everything works OK but they want a second keypad to be connected to them on the other side of the door. So one electric door strike will be operated by two keypads powered from one power supply. I don't know how to implement this . Probably the two keypads are connected in parallel but someone once told me on another occasion that you have to use a diode which is connected in parallel with the electric strike. It seems to me that this does not make sense but maybe it has to be so. Please give me some information. The matter is very urgent.
Regards

Perhaps you can give some indication of the type/model of equipment?
Just stating the manufacturer doesn't say anything.

Hello, the parallel diode is connected in parallel to the striker el.in the negative direction, it acts as a protection. You have to give two additional diodes in series in the power supply circuit of the lock el.from each keypad.

Remember that you need to provide a means of exiting the room in the event of a power failure or the lock electronics breaking down. That is, the electric door strike must be reversible and there must be a 'push glass to unlock' type escape button.

Thank you very much for responding so promptly. As for the type of lock it is: OR-ZS-802.
As for the emergency exit, there will be "showcases" with glass in each side of the door where the keys for the lock will be.
Going back to the diodes, my understanding is that you have to insert a diode in series in the power supply of the striker so that the power from one keypad does not reverse through the electric striker to the other keypad. Did I understand this correctly?

These locks have a relay output, with a single power supply there is no need for diodes in series.
As far as I can see, there is an input for an open button, I would use this and control the new lock with the old one using this input.

Yes , you've got it right, you just need to remember the polarity compatibility of the el.striker power supply from both keyboards. If it turns out that they do not match, use two rectifier bridges to supply the tap-on el. You connect the DC outputs of the bridge to the abutment el.s, the AC inputs to the control.

BURMAR wrote:

Returning to the diodes, my understanding is that a diode needs to be inserted in series in the power supply to the striker so that the power from one keypad does not back up through the striker to the other keypad.

.

No, that's not why you put it there, read the topic describing your concerns --> https://www.elektroda.pl/rtvforum/topic3254338.html

As for connecting a second keyboard I would use the idea alster1 to make the extra one control the old one.

Once again, thank you very much for your help. Regards

Hello again,
I am after assembling the keypads. I took the advice of Alster1. Everything works OK. Thanks again to everyone for the help shown.
Greetings