These are very handy with conventional 3-wheel combination locks. Devices like this and good old fashioned combination manipulation brought MP locks (Manipulation Proof) into being. Digital keypads take an auto-dialer completely out of the equation.
The low tech way to open a conventional lock like this is to hook up a high speed drill instead of a dialer and let it run for a day. The wheel pack spinning for thousands of revolutions eventually cuts through the fence, allowing the fence lever to fall and the lever nose falling into the cam gate, retracting the bolt.
I’d just take the time and manipulate the lock. It takes patience, calm and a good sense of feel.
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