Petersen Security Solutions QC

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Petersen Security Solutions QC Petersen Security Solutions your one-stop shop for all of your lock, key, and security needs!

Today's antique mortise lock repair:Broken spring in a super old Sargent Mortise Lock.Hell yeah!
10/22/2026

Today's antique mortise lock repair:

Broken spring in a super old Sargent Mortise Lock.

Hell yeah!

A proper GMK system visualized.Building Sub Masters and Change Keys.Can't wait to send this one out!!!
09/13/2026

A proper GMK system visualized.
Building Sub Masters and Change Keys.
Can't wait to send this one out!!!

93 Cylinders and 150 keys on a Saturday evening.Lets goooooo!
09/13/2026

93 Cylinders and 150 keys on a Saturday evening.
Lets goooooo!

Installed some new Vertical Rod Exit Devices at Berean Baptist Church today. Enhanced security AND a modern look!
07/01/2026

Installed some new Vertical Rod Exit Devices at Berean Baptist Church today.

Enhanced security AND a modern look!

Sometimes on Chevys there isn't enough information in the door locks to generate a working ignition, so I have to shim t...
05/29/2026

Sometimes on Chevys there isn't enough information in the door locks to generate a working ignition, so I have to shim the ignition out.
Practice and a couple custom tools makes this pretty easy!

Yet ANOTHER taco bell Restroom access project.
05/12/2026

Yet ANOTHER taco bell Restroom access project.

Before and after, replacing an older mortise lock with a cylindrical AlarmLock Trilogy
05/07/2026

Before and after, replacing an older mortise lock with a cylindrical AlarmLock Trilogy

These GKL snap-in bridges and adaptors are amazing if you dont have time to fabricate tabs onsite.
05/07/2026

These GKL snap-in bridges and adaptors are amazing if you dont have time to fabricate tabs onsite.

Well thats not supposed to happen.I dont think I'll be selling any Detex Value Series any time soon....
05/07/2026

Well thats not supposed to happen.
I dont think I'll be selling any Detex Value Series any time soon....

Some fresh Occupancy Indicator Deadbolts at Rock Island Taco Bell.No more surprise pooping with strangers.Hell yeah!
05/06/2026

Some fresh Occupancy Indicator Deadbolts at Rock Island Taco Bell.
No more surprise pooping with strangers.
Hell yeah!

Address

225 W. 4th Street
Davenport, IA
52801

Opening Hours

Monday 9am - 4pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

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