Trilogy Family Grows Again

The new PDL5300 features a double-sided keypad with PIN-code and HID reader access on both sides of the door, granting direction-specific access for up to 2000 users. Trilogy locks also now boast residency and privacy features.

Alarm Lock created a whole new category of access control hardware with the introduction of the Trilogy Series many years ago. Alarm Lock was instrumental in bringing standalone security and access control from the gadget category into the sunlight of professional security solution, and Alarm Lock repeatedly brings sought-after features and exceptional value to the product category.

Trilogy essentially ushered out the era of the single coded mechanical pushbutton lock, and developed the technological bridge between keyed locksets and hard-wired access control systems with an electronic replacement that actually worked.

The Trilogy was the prodigy of Alarm Lock, an established developer of electrical door hardware whose parent company eventually became NAPCO, a pioneer in electronic security. So from its onset, the Trilogy's feature set reflected sophisticated mechanical lock options and advanced electronic control features, all in a unique battery powered standalone package. Alarm Lock continues to expand its offerings with one of the industry's largest variety of models and programming features.

The Trilogy has gained acceptance within the locksmith community for three good reasons:

1-The device has undergone upgrade and redesigns throughout its history and has been honed into a robust physical lock connected to a highly reliable electronics and durable metal button keypad

2- This product is designed to be repaired, not discarded. As we all know, any product can fail and when it does, you don't want to tell your customer the entire unit needs to be replaced just because one part has died. Alarm Lock has replacement parts and the tech support to tell you what you need.

3- You don't need a degree in electronics to program it. Unsolicited testimonials verify that old-school locksmiths embrace the Trilogy because when Alarm Lock says “ QuickStart ,” they mean it.



I recently got a call from a good customer, a facilities management company that manages a number of fraternity houses. We've had a lot of laughs dealing with the issues we've encountered on the front doors of these animal houses.

They had recently taken over the maintenance of a particular fraternity house, and there was a mysterious keypad on the front door. (All the other frats had other types of keypads, and our client did not know what it was.) I wasn't sure, but I had a hunch. He came into the shop and I showed him a Trilogy brochure. His face lit up, and he exclaimed, “That's it! But doesn't have the red and black things!”

So it was a Model DL2700, the basic unit without a computer interface, and he said they used one code for everybody. “Just please, make it work!”

I downloaded the programming instructions; grabbed some batteries and headed out. My customer met me at the door and displayed how the unit worked, and then didn't work. It looked to him like the unit was opening for any code entered into it.

I changed the batteries, defaulted the unit and took it for a test spin.

The Trilogy was definitely intermittent. It seemed to work. I replaced the cover on the back and it stopped working. Then it remained unlocked no matter what I did. What a mess!

I had another appointment, so I split and promised my customer. “I'll be back.” I returned and got a legal parking spot, and picked up where I had left off. The Trilogy was still staying unlocked.

How does a solenoid activated lock work? A servo is a motor. The servo in the Trilogy spins in one direction with the polarity of the voltage applied, and reverses direction if that polarity is reversed. So you start with the Trilogy locked. The lever is freewheeling, so turning the lever results in no latch motion.

Then you enter the right code or short out the REX wires. A pulse of voltage is applied to the servo and it spins and the lever becomes active. If you turn the lever, it retracts the latch.

After the programmed delay expires, the Trilogy applies a voltage pulse, only this time it he polarity is reversed, so the lever disengages and the lever no longer activates the latch.

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