Reference sheet for the Latch M2 mortise lock. Use this article to look up dimensions, certifications, supported credentials, and Lens behavior when installing, servicing, or troubleshooting the device.
Features
Feature
Specification
Credential types
Smartphone, NFC Keycard, Doorcode, Mechanical Key
Users per device
1500
Management
DOOR app and DOOR OS (cloud)
Communication
Feature
Specification
Wireless standards
Bluetooth Low Energy 5.0 (BLE), Near Field Communication (NFC)
WiFi
None — the M2 does not connect to WiFi
NFC frequency
13.56 MHz
NFC type
MIFARE DESFire Light
Supported phone platforms
iOS, watchOS, Android
Power
Feature
Specification
Power supply
6 AA non-rechargeable alkaline batteries
Battery status
Passive monitoring and active notifications via DOOR OS
Mechanical key backup
Yes — cylinder on the exterior, operates independently of batteries
Environmental
Feature
Specification
Operating temperature
-4°F to 130°F
Operating humidity
0–95% relative humidity, non-condensing
Weather resistance — Lens
IP65
Weather resistance — Exterior/Interior assemblies
IP55 (interior assembly not intended for outdoor use)
Certifications and compliance
UL 10B/C (90 min)
CAN/ULC S104
FCC Part 15
IC RSS
FL TAS 201/202/203-94
Complies with the Americans with Disabilities Act (ADA)
Mechanical specifications
Feature
Specification
Lock format
Mortise
Handing
Field reversible
Door thickness compatibility
1-3/4" (44.5mm)
Backset compatibility
2-3/4" (69.9mm)
Door preparation
Templates available at support.door.com
Deadbolt throw
1" (25.4mm)
Faceplate options
8" x 1/4", 0.06" thick (203.2 x 6.4 mm, 1.5mm thick)
Strike plate
ANSI 4-7/8" x 1-1/4" (123.8 x 31.75 mm) curved lip strike
The Latch M2 Lens provides visual feedback after a credential is presented. There are three confirmed states:
Spins in a circular pattern: credential accepted — the lock has unlocked
Flashes: credential rejected (invalid doorcode, expired key, out of schedule, or unrecognized Keycard)
Does not light up: batteries are depleted — replace the 6 AA alkaline batteries, or use the mechanical key
DOOR does not publish a documented list of LED or beep error codes for the Latch M2. If a behavior other than the three above is observed, capture a short video and escalate to support@door.com.