Latch M2 specifications

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

Dimensions

View	Width	Height
Exterior side profile	2.3" / 59mm	9.7" / 247mm
Exterior front elevation (body)	2.7" / 69mm	7.6" / 194mm
Exterior front elevation (handle area)	—	2.1" / 53mm
Interior front elevation (body)	2.9" / 73mm	7.6" / 194mm
Interior front elevation (handle area)	2.4" / 62mm	—
Interior side profile	2.4" / 62mm	9.7" / 247mm
Mortise body cutout (max width)	2.1" / 53mm	—

Finishes

Finish option	Material details
Black exterior / Black interior	Matte finish; zinc alloy exterior & turns; polycarbonate lens & battery cover
Satin Chrome exterior / White interior	Satin finish; zinc alloy exterior & turns; polycarbonate lens & battery cover

Lever styles

Style	Description
Standard	Straight horizontal lever, rounded end
Return	Lever with a downward-curved return at the end

Lens behavior

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.

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