Alarm Lock Trilogy T2 vs. T3: Keypad Locks Compared
What separates Alarm Lock's Trilogy T2 keypad locks from the T3 DL3500: user codes, audit trail, schedules, programming and battery life.
In this guide
Trilogy T2 models, such as the DL2700 lock and the DL1200 trim, are standalone keypad locking devices. They hold up to 100 user codes plus a master code and three service codes, all programmed at the keypad.
The Trilogy T3 DL3500 adds a clock. Alarm Lock's DL3500 spec sheet lists the DL35 models as the "Trilogy T3 Mortise Series", with 300 user codes, a 40,000-event audit trail, up to 500 scheduled events and programming from a Windows PC.
Trilogy T2: keypad access, programmed at the door
Alarm Lock's T2 sheet covers the DL2700 and DL2700LD cylindrical locks, the DL2700CR (classroom) and DL2700DB (deadbolt) mortise locks, the DL1200 narrow-stile trim and the ETDL27 exit trim. All of them have the same code count.
- Up to 100 codes: on the DL2700 that's 10 manager codes and 90 basic user codes, plus one master code and three one-time service codes.
- Programming at the keypad. Alarm Lock lists the DL2700 as "keypad only".
- Passage mode, and lockout codes for one user, a group or all users.
- Remote override over 2 wires, or key bypass.
- Weatherproof from −31°F to 151°F, per the T2 sheet. Alarm Lock's newer DL2700 sheet (ALA129K) gives that range for WP models and says Trilogy locks also come as non-WP models for interior doors. The DL3500 sheet gives −20°F to 151°F for all Trilogy mortise models, so the two sheets disagree for the DL2700CR and DL2700DB.
The DL2700 runs on five AA batteries, rated for 200,000 cycles or up to 5 years (typical). It is nonhanded, and Alarm Lock lists it as a BHMA Grade 1 lockset with a deadlocking latch that carries a UL 3-hour fire rating.
The T2 sheet lists no clock, audit trail or schedules.
Trilogy T3: audit trail and schedules
The DL3500 mortise lock is the T3 model we carry. Its spec sheet lists:
- 300 user codes in four levels: master, manager, supervisor and basic user.
- A real-time clock with up to 500 scheduled events and holiday schedules, and four built-in time schedules. Events can lock or unlock the door and disable or enable users.
- A 40,000-event audit trail: a printable, time- and date-stamped record of all electronic activity, including user entries, unauthorized code attempts and program mode changes.
- Programming at the keypad, from the AL-DTMIII Data Transfer Module, or from a PC running Alarm Lock's DL-Windows software. The audit trail can be read with the AL-DTMIII, or straight into the PC with an AL-PCI2-U USB interface cable, which includes DL-Windows software. Both are sold separately.
- Quick Passage mode, a tri-color LED and a programmable Form C relay.
- Weatherproof from −20°F to 151°F, per the DL3500 sheet. Alarm Lock's mortise web page gives −31°F to 151°F.
It runs on five AA alkaline batteries, rated for 80,000 cycles (typical) on the DL3500 sheet. Alarm Lock's mortise web page lists both 80,000 and 75,000 cycles.
Tip For doors with a cylindrical prep that need an audit trail, Alarm Lock's cylindrical PIN lock page lists the DL3000, with a 1,600-event log, and the DL3200, with a 40,000-event audit trail and 500 scheduled events.
T2 vs. T3 side by side
| Feature | T2 DL2700 | T3 DL3500 |
|---|---|---|
| User codes | 100 + master + 3 service | 300, four levels |
| Programming | Keypad only | Keypad, AL-DTMIII or PC |
| Clock, schedules | Not listed | Up to 500 events |
| Audit trail | Not listed | 40,000 events |
| Batteries | 5 AA, 200,000 cycles | 5 AA, 80,000 cycles |
| Handing | Nonhanded | Left or right |
| Lock type | Cylindrical | Mortise |
Battery figures are typical cycles from Alarm Lock's T2 and DL3500 sheets. The mortise web page also gives 75,000 cycles for the DL3500.
Battery types, low-battery signals and swap steps for each model are in our guide to Trilogy lock battery replacement.
How to choose
- Pick a T2 when the door needs PIN entry, codes are managed at the lock, and no one needs a record of who entered and when.
- Pick the T3 DL3500 when you need a time-stamped record of entries, a door that locks and unlocks on a schedule, or more than 100 users.
- Check the door prep as well. A mortise prep doesn't rule out a T2: the T2 line includes the DL2700CR (classroom) and DL2700DB (deadbolt) mortise locks.
Warning On the DL3500, handing is part of the order: the lock body is ordered left- or right-handed and can be reversed in the field.
Trilogy locks we carry
- Trilogy T2 DL2700, cylindrical lever lock.
- Trilogy T2 DL2700IC-R, prepped for a Sargent interchangeable core, core not included.
- Trilogy T2 DL1200, outside trim for aluminum narrow-stile doors with an Adams Rite 4710, 4730 or 4900 Series dead latch (not included), per Alarm Lock's DL1200 sheet.
- Trilogy T3 DL3500CRR, mortise lock, classroom function, handed R (right hand or left hand reverse bevel).
All four are listed in Door Hardware & Access.
FAQ
What is the difference between Trilogy T2 and T3?
A T2 is a keypad lock with up to 100 user codes, programmed at the keypad. The T3 DL3500 mortise lock has 300 user codes and adds a real-time clock, a 40,000-event audit trail, up to 500 scheduled events and PC programming with DL-Windows.
How is the Alarm Lock DL2700 programmed?
At the keypad. Alarm Lock lists DL2700 programming as keypad only.
Specifications come from Alarm Lock's Expanded Trilogy T2 Series sheet (ALA519A), the DL3500 Series spec sheet (ALA151C), the DL2700 Series sheet (ALA129K) and the Alarm Lock cylindrical and mortise PIN lock pages.