The Latch G-M2 physical installation is performed by a qualified technician using the Latch M Series Generation 2 Installation Guide (PDF, included in the box). This article covers what to verify before the technician arrives, how to activate the device in DOOR OS after installation, and what to confirm once the unit is live.
Before installation — confirm door compatibility
Have the technician verify the following before removing the existing lockset:
- Door thickness: 1-3/4" (44.5mm)
- Backset: 2-3/4" (69.9mm)
- Mortise pocket: the door must be prepped for a standard mortise lock body and must match the template in the installation guide. Door prep templates are available at support.door.com
- Faceplate fit: the G-M2 ships with a 1.25" x 8" standard faceplate. A narrow 1.0625" x 7.25" faceplate is available for tighter retrofits — confirm which faceplate size the door edge requires before opening the kit
- Door fit: the door must be plumb, properly hung, and close flush — alignment is important for smooth lever and latchbolt operation
- Deburr all holes so moving parts function properly and the internal wiring isn't damaged by sharp edges
If any of these are out of spec, installation cannot proceed until the door condition is corrected.
Physical installation
The installation guide (included in the box, also linked below) covers all physical steps with diagrams:
- Setting the latchbolt orientation for the door handing (field reversible)
- Mounting the mortise lock body and routing the cable
- Installing the spindles, exterior trim, lens module, and key cylinder
- Mounting the interior plate, control module, battery tray, and inner trim
- Loading six AA non-rechargeable alkaline batteries
- Installing the strike plate and verifying alignment
Use hand tools only — do not use a drill. Power tools can damage the trim, lens, or mortise body.
Handing
The latchbolt is field reversible. The technician adjusts the handing during the preparation step before mounting the lock body. Confirm the thumbturn points up when the deadbolt is retracted before closing the door.
Activating the device
Activation has two parts: the door must exist in DOOR OS, and the physical device is activated from the DOOR app.
1. Confirm the door exists in DOOR OS Log in to DOOR OS → Access → Doors → confirm the door where the Latch G-M2 was installed is listed. If not, create it before proceeding.
2. Activate the device from the DOOR app
- Open the DOOR app → go to the Devices tab
- Tap Add a device
- Scan the QR code on the device or enter the serial number manually
- Follow the on-screen flow to complete activation
- Confirm the device appears as activated in DOOR OS → Access → Doors → door
A phone with the DOOR app must be within Bluetooth range of the G-M2 throughout the activation flow.
After installation — verify
Before closing out the installation, run through this checklist:
- Cylinder test: insert the mechanical key and rotate one direction to retract the latchbolt, then the other to throw and retract the deadbolt. Operation should be smooth — if there is binding, adjust the cylinder depth before proceeding
- App unlock: from the DOOR app (installer account), tap Unlock — the lever should free up; turn it to confirm
- Doorcode: enter a doorcode assigned to this door in DOOR OS — the Lens should respond and the lever should engage
- Latch Keycard: tap a Keycard flat against the center of the Lens to test NFC reads, if Keycards are in use at this property
- Interior lever and thumbturn: confirm both turn freely in both directions at all times
- Door Sync: perform a Door Sync from the DOOR app to confirm credentials are current on the device
If the lever feels stiff, check that the spindle is fully seated and the mortise body is square in the pocket — see the troubleshooting article for diagnostics.
Attachments
- Latch M Series Generation 2 Installation Guide (PDF) — full step-by-step with diagrams
- Latch M Cut Sheet (PDF) — dimensions, faceplate variants, mortise body specs