Electronic Safe Lock Retrofit

We retrofit the LpLOCKS RotoBolt electronic safe lock onto the C23 Cannon Series Safe, which was equipped with a mechanical combination lock.


The C23 Cannon Series gun safe has a 12- gauge body and a 1.5” thick double steel composite door. This UL residential security container has an Intertek ETL 60-minute/1200-degree F fire protection rating. In addition to the fire barrier panels within the safe, it comes with a triple fin...


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The C23 Cannon Series gun safe has a 12- gauge body and a 1.5” thick double steel composite door. This UL residential security container has an Intertek ETL 60-minute/1200-degree F fire protection rating. In addition to the fire barrier panels within the safe, it comes with a triple fin intumescent cold smoke expandable seal and a heat0 activated door seal that expands when exposed to heat.
The silver mist gun safe is equipped with top and side boltwork, operated by a three-spoke handle. One-inch diameter active locking bolts secure the door from opening when locked. When unlocked, the door swings open on Truelock internal hinges.

For protection against unauthorized entry, an anti-punch relocking mechanism incorporates a plate screwed on to the surface of the mechanical lock. Yes, a mechanical combination lock!
The customer who was interested in purchasing this safe liked everything about it from the color of the interior to the configuration of the rack and number of shelves. However, the couple had difficulty dialing the combination and asked if there was an alternative. The salesperson explained how the electronic safe lock operates by entering a single series of numbers instead of turning the dial in different directions, while having to line up the specific numbers. If any one of the combination numbers is passed, you must start over.

I had just received a sample LpLOCKS electronic safe lock, Model EL-20 and keypad KBL-10-MC. This lock was designed and patented by Nick Gartner of NL Lock Technology, founder of La Gard, Inc.
A short discussion with the salesperson concluded in giving me permission to retrofit the LpLOCKS electronic safe lock onto the C23 Cannon Series Safe. LpLOCKS’ electronic safe locks are similar dimensions as the mechanical locks, having the mounting hole dimensions interchangeable with the mechanical locks.

The EL-20 Electronic Lock has a UL Type 1, VdS Class 2 and an EN 1300 Class B certifications. The EL-20 is also known as the RotoBolt safe lock, named for the movement of the bolt as the lock becomes unlocked or locked. The bolt rotates in one direction, arcing from the open (retracted) position to the locked (extended) position. The RotoBolt safe lock can be installed in all four of the mounting directions. The RotoBolt case is non-handed, permitting the lock to be installed cover plate up or cover plate down in order to accommodate left or right hand applications.

The RotoBolt is operated using a six-digit code or a word with six letters. There is a Manager (Main) Code and an optional User (secondary) Code. Typically the safe manufacturer keeps the manager code on file as a security backup and the customer will only have the one User code.

When purchasing the lock from a wholesaler, only the Manager code is provided and the additional User code must be programmed into the lock. The Manager Code can activate and delete the User Code. When a valid code is entered, a double beeps sounds. The lock electronically retracts the block function for three seconds, permitting the bolt to be moved by the boltwork unlocking the safe. When the boltwork is moved to the locked position, the RotoBolt automatically secures the bolt. When an invalid entry occurs, there is a long beep. When entering a code, if no key is pressed within ten seconds, a started code entry is cancelled.

Note: There is no override code. The Managers Code or User Code (if programmed) must be known in order to operate the electronic safe lock.
To prevent manipulation, a time out provides significant protection. If four consecutive wrong codes are entered, a five- minute keypad lockout activates. During the lockout, the LED flashes every ten seconds and any key press causes a long beep. After the five minutes, two more invalid code entries restart the five-minute lockout.

LpLOCKS also offers a time delay function electronic safe lock, the EL-25. This keypad programmable time delay is from one to 99 minutes, and any of their keypads can be used with this model lock.
Along with the EL-20, I was given an LpLOCKS KBL-10-MC keypad. The KBL-10 has a telephone style keypad (0-9, * and #) using a pressure-sensitive membrane for the keys. An LED is at the left between the 4 and 7. The keypad has a sliding door along the bottom to accommodate a 9 Volt battery used to power the keypad and the lock.

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