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La Gard Reset Box

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MartinHewitt

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Post Sun Jun 14, 2020 8:24 pm

La Gard Reset Box

Finished my La Gard reset box project. The reset box can reset without knowing the Management Code nearly all La Gard electronic safe locks, when there is direct access to the lock. It is not usable to open a locked safe!

I have attached the schematics of the original La Gard reset box and a rebuilt one. Instead of the original parts I used two 10kOhm resistors, the next best npn transistor and a standard diode. Working perfectly. There are descriptions about its use online. Don't ask me.

Now I only need a La Gard without known PIN.
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GWiens2001

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Post Sun Jun 14, 2020 10:05 pm

Re: La Gard Reset Box

Thanks for posting. Will have to make one. Keep from having to disassemble and jump.

Gordon
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Anarchy_won

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Post Sun Jun 14, 2020 10:51 pm

Re: La Gard Reset Box

Great work MartinHewitt. I dont have a La Gard to test it with but if I run across one I will let you know how it go's.
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least

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Post Mon Jun 15, 2020 6:56 pm

Re: La Gard Reset Box

Hi,
I assume the diode is there to allow the reset-box to power up the lock in case its battery died... Depending on the operating voltage range of the lock, the schottky diode might make a difference if the battery of the reset box would be low - this type of diode has much lower (roughly less than half) forward voltage drop, compared to usual diodes, so the lock might get almost 0.5V more with the schottky.
Kind regards,

Michal
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MartinHewitt

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Post Mon Jun 15, 2020 8:26 pm

Re: La Gard Reset Box

The battery of the reset box is the only battery connected to the lock. See instructions of the La Gard reset box. The purpose of the diode is IMHO only to protect against doing wrong connections. For the operation it is not important if there is none, a Schottky or a normal diode. With a normal diode the battery looks maybe a bit more used than with the Schottky, but it will work also with a bit more used battery and the voltage is regulated inside the lock.The reset box is also not connected for months.
In case you wonder ... Martin Hewitt is a fictional detective in stories by Arthur Morrison:
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MartinHewitt

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Post Sun Jul 19, 2020 2:16 pm

Re: La Gard Reset Box

There is another reset box from M-Locks, which is usable for M-Locks and La Gard: https://www.m-locks.com/products/st6066-resetbox/

Operation for La Gard is the same as the original box. Description for M-Locks locks is a bit different:

1) Do not put battery in ST6060
2) Disconnect power from the lock
3) Press (0) on keypad for 10 sec.
4) Connect reset box to battery/alarm connector (no battery plugged yet)
5) Connect power to lock through keypad (lock signals twice)

Lock is in pre-setup mode. Press (555555) to open.

In case you have problem with an M-Locks lock it is probably worth a try to use the genuine La Gard reset box or a home-made one.
In case you wonder ... Martin Hewitt is a fictional detective in stories by Arthur Morrison:
Martin Hewitt, Investigator Chronicles of Martin Hewitt
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MartinHewitt

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Post Sun Jul 26, 2020 8:20 am

Re: La Gard Reset Box

The setup documuentation for the ComboGuard Pro https://www.dormakaba.com/resource/blob ... f-data.pdf
For the Basic I can't find anything. I guess it is the same as with the ComboGuard Pro.
On the AuditGuard the reset seems to work the same, but the setup software is needed to configure the lock afterwards. See https://www.dormakaba.com/resource/blob ... f-data.pdf
On the Smartlinc the reset seems to work a bit differently and a software is needed too. See https://www.dormakaba.com/resource/blob ... f-data.pdf

I can't find any documentation what to do with an M-Locks lock in pre-setup mode. Manager software for the xx50 locks can be downloaded at http://www.m-locks.com/software/mls-manager.zip
In case you wonder ... Martin Hewitt is a fictional detective in stories by Arthur Morrison:
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