The Miller Edge MT21 sensing edge is a high-performance safety device designed to ensure reliable obstruction detection on industrial and commercial automated doors. Engineered with a compact 2-inch by 1-inch profile, the MT21 installs securely between double-L angle bottom bars and activates instantly upon contact to stop or reverse door movement. Its flexible vinyl-jacketed construction adapts to uneven floor surfaces while maintaining consistent responsiveness, making it ideal for rolling steel doors, fire doors, and material-handling systems.
Built for durability and customization, the MT21 offers multiple monitored and non-monitored configurations, including options for resistors, diode-capacitor circuits, 4-wire monitoring, air-wave, and pneumatic setups. Customers can tailor length, outlet location, and color—including an XR5 chemical-resistant jacket—ensuring compatibility with a wide range of commercial applications. With UL 325 recognition, patented Alumaglas™ contact technology, and a rugged reinforced PVC exterior, the MT21 delivers dependable performance and long-term safety compliance.
Features
- Compact 2" × 1" safety edge profile
- Flexible vinyl-jacketed design conforms to floor irregularities
- Multiple monitored and non-monitored configuration options
- Optional XR5 chemical-resistant jacket for harsh environments
- UL 325 recognized component for commercial door safety
Specifications
| Parameter | Value / Options |
|---|---|
| Profile Size | 2 in. W × 1 in. H |
| Length | Custom-cut in ¼-inch increments |
| Maximum Length | 150 ft (electric), 60 ft (air-wave), 18 ft (pneumatic) |
| Color Options | Gray, black, yellow, yellow/black stripe, XR5 yellow |
| Sensitivity | 4–8 lbf nominal |
| Lead Wire | 18-gauge, 2 ft lead |
| Electrical Rating | 24 V AC/DC, 0.5 A, normally open |
| Exterior Material | Heavy-duty reinforced PVC |
| Contact Element | Patented Alumaglas™ |
