Supra Advantage Express II real estate lock opened

 Supra Advantage Express II 

Real Estate Lock Opened 

These locks have: a big shackle to attach the lock, and a small drawer that opens and gives the real estate agent a key to the house so they can show it to potential buyers.   

These locks are digital, and though they have a removable keypad you need to update a PAID subscription service to get the keypad to actually interact with the lock. There are cool reporting functions (what agent got the key out, when they did, when they put it back, etc.). 

I have the manual, the keypad, a new odd battery for the keypad and the actual lock. No good. This is a bypass...with a hammer. 

 The lock still functioned (locked) afterward and I can do this over and over and still lock the shackle. It take a good wack or three on the side of the lock, near the top to open the shackle because it is spring retained. 

I was using a lead hammer, but one of the transparent yellow plastic headed hammers would probably work better since you're trying to basically vibrate the metal components against the spring tension to pop it open. 

Below is the mechanism for the house-key compartment at the bottom of the Supra Advantage lock. 

It is basically two metal pins (on at each end) and a winding of red lacquer-coated magnet wire. Power (probably 12 to 24 volts DC) goes through the wire and it pulls in both pins. That releases the little drawer in the bottom of the lock so you can get the house key out. 

Here is video of just about 9vDC making the pins go in and out. Higher voltage would make them go inward farther/longer time allowing the drawer to spring open.

This little drawer can be defeated by hitting the lock, near the bottom (but on the side) with a plastic headed hammer. 

One of those with the transparent yellow heads. This can for the pins (and the springs that hold them outward/locked) to jiggle around and the drawer will fall open. Or it will jam. 

There are 3 hollow split pins at the bottom edge of the lock. All those do is keep you from slamming the drawer too far shut. They have zero value when physically trying to break the lock open.