Miller Edge MG123 – 2-Inch Extruded Gate Edge
The Miller Edge MG123 is a 2-inch extruded sensing edge designed for motorized gates, sized for 1-3/4″ to 2″ gate surfaces. When lightly touched, it instantly sends an electrical signal to stop or reverse gate operation, providing reliable entrapment protection.
This slide-in style edge uses a double-T mounting design for superior stability, mounts vertically or horizontally, and is custom manufactured to your length, color and cord location.
Before you order — five things to confirm
1. Length. Mounted horizontally, measure the gate width less post caps. Mounted vertically, measure the post height less caps — not required to exceed 6 ft. Ordered in 1/4 inch increments.
2. Cord location. Left, right, end, top, or universal — see below.
3. Color. Black or yellow.
4. Monitoring. Monitored if your gate operator was built after January 2016. Gate operators use the T2 (10K resistive) designator.
5. Mounting channel. Choose a profile below, or select NONE if you are replacing an edge in a channel you already have.
Not sure this is the right model? See Which Miller Edge Sensing Edge Do I Need? Or call (866) 965-5599.
Does Your Gate Operator Need a Module?
Most gate operators take a T2 edge with no module. Some brands need an interface module between the edge and the controller:
| Module | Operator Brands |
|---|---|
| GEM-102 | IQ Gate (2/4-wire) |
| GEM-103 | Eagle Access Control, IQ Gate, Nice, PPA America |
| GEM-104 | All-O-Matic, Beninca, Byan Systems, FAAC, HySecurity, Maximum Controls, Ramset, SEA USA, V-Mag |
AutoGate, B&B ARMR, BFT, DoorKing, GTO/Linear, Power Master, VE Power, Rotary, Torxun, USAutomatic and Viking need no module. For a wireless install, use the RBand monitored wireless system — no module required.
Mounting Channel Options
MG123 uses the same channels as the ME123, all measuring 1-1/2″ high × 2″ wide.

| Option | Material |
|---|---|
| NONE | Edge only — for replacement in an existing channel |
| ME123-C | High Density PVC |
| ME123-C1 | High Density PVC |
| ME123-C2175 | High Density PVC |
| ME123-C3 | High Density PVC |
| ME123-CA3 | Aluminum (brushed) |
| ME123-C7 | High Density PVC |
Cord Location
The cord location is where the lead exits the edge. Facing the operator side of the gate:
- Mounted horizontally — is the operator on the left or the right?
- Mounted vertically — should the wire outlet be at the top or the bottom?
- End or Universal are also available

Get this wrong and the lead runs the opposite way across the opening — and the edge is built to order. See the Gate Edge Handing Guide if you are unsure.
Dimensions

Key Features
- 1-7/8″ W × 1-1/2″ H — ideal size for 2-inch thick gate surfaces
- Double-T design for added stability
- Mounts vertically or horizontally
- Sealed assembly – impervious to dust and debris
- Six mounting channel options
- Custom manufactured to your specifications (color, length, cord location)
- Flexible PVC exterior, available in black or yellow
- Patented Alumaglas™ contact element for superior performance (electric option)
- UL 325 Recognized Component
- 1-year warranty
- Made in USA
Common Applications
- Slide gates
- Cantilever gates
- Overhead gates
- Vertical lift gates
- Vertical pivot gates
Available Configurations
- 2-wire monitored — T2 (10K) for gate operators
- 4-wire monitored
- Non-monitored — 2-wire, Air-Wave, or pneumatic
- Bumper — no sensor
The designator is set by your operator, not by the edge. See the full designator guide for the T1 through T6 reference table.
Important: Edges are custom-made and non-returnable. Confirm compatibility with your gate operator manufacturer before ordering.
Downloads
MG123 Specifications (PDF)
Complete Monitored Openers Ordering Guide (PDF)
Gate Edge Handing Guide (PDF)