Miller Edge MWRT12 Wireless Door Edge System Manuals & Support

The Miller Edge MWRT12 is a non-monitored single-channel wireless link between a 2-wire sensing edge and a door or gate operator. It removes coil cords and reels.

It suits doors built before August 2010 and gates built before January 2016. The MWRTA12 adds a low battery alarm, and a two-channel MWR22B receiver is available.

Buy the MWRT12 / MWT12 / MWR12 (6 options)

Identify your model

MWT12 or MWT12B is the transmitter, MWR12 or MWR12B the receiver and MWRT12 the kit. A in the model (MWTA12) means audible low battery alarm. For monitored gates, see the RBand. MWR22B: two-channel non-monitored receiver.

Key specs

Type	Non-monitored, 2-wire NO edge
Frequency	318 MHz
Range	100 ft in ideal conditions
Response time	70 ms
Receiver power	12 to 24 VAC or VDC
Transmitter power	2 AA, about 2 years
Receiver outputs	NO and NC
Operating temperature	0 to 130 °F

Manuals and documents

Installation Manual

Single-Channel Wireless Edge System Installation
6 pages View PDF: Single-Channel Wireless Edge System Installation (opens in a new tab)
Two-Channel Wireless Edge System Installation
6 pages View PDF: Two-Channel Wireless Edge System Installation (opens in a new tab)
MWT12 and MWR12 Installation Instructions, Earlier Edition
3 pages View PDF: MWT12 and MWR12 Installation Instructions, Earlier Edition (opens in a new tab)

Spec Sheet

MWRT12 and MWRTA12 Spec Sheet
2 pages View PDF: MWRT12 and MWRTA12 Spec Sheet (opens in a new tab)
MWR22B Two-Channel System Sell Sheet
2 pages View PDF: MWR22B Two-Channel System Sell Sheet (opens in a new tab)
MWR13 Three-Channel System Spec Sheet
2 pages View PDF: MWR13 Three-Channel System Spec Sheet (opens in a new tab)

Troubleshooting

Edge or transmitter does not work

Check the green receiver power LED.
Check the coding switches match.
Press the transmitter test button. The green LED lights for 3 seconds.
Replace the batteries.
Read the edge: open at rest, under 5 ohms when pressed.

Common questions

No. Use it on doors built before August 2010 and gates built before January 2016. For newer gates use a monitored system such as the RBand.

Two AA batteries, about two years. The MWTA12 beeps when 25% of battery life is left.

Disconnect it and read it with an ohmmeter. A 10K edge reads about 10,000 ohms at rest and drops near zero when pressed. A 2-wire normally open edge reads open at rest and near zero when pressed.