LiftMaster AUXREL Auxiliary Relay Board — MAXUM Commercial Operators
LiftMaster AUXREL Auxiliary Relay Board — MAXUM Commercial Operators
The LiftMaster AUXREL adds configurable auxiliary relay outputs to supported MAXUM commercial door operators. It can provide switching signals for appropriate external devices, such as a low-voltage indicator or audible alert, according to the selected relay function. The manufacturer documents two relays with normally open and normally closed contacts and restricts the external circuits to Class 2 low-voltage sources within the stated ratings. Match the operator, accessory connection and intended load before choosing this board for an installation.
Compatibility — Models, Versions and Exclusions
| Model or selection point | Compatibility requirement |
|---|---|
| Supported MAXUM JDC / JHDC / TDC arrangements | Verify the exact model manual and accessory connection. |
| External lights, bells or horns | Load and power source must meet the documented contact and accessory-power limits. |
| LPEXP loop expansion board | A separate accessory; the manual describes independent or combined installation. |
| Older Logic-series accessory sockets | Do not assume compatibility from the relay function alone. |
| Mains-voltage loads | Not permitted directly on the documented Class 2 relay connections. |
Select the Relay Function and Electrical Load Together
A relay can report an operating condition without supplying power to the external device. Identify the required function, the device voltage and current, and the appropriate power source before connecting it. The relay contact rating and the AUX24 power-output limit describe different parts of the circuit and must not be treated as interchangeable ratings.
The MAXUM instructions offer switch-selected functions such as open limit, door motion and a condition associated with the closed limit. Read the complete function table rather than assuming a label means the relay is energized in the state you expect. After setup, test the indicator through the full operating cycle, including stopped and fault conditions relevant to the installation.
Specifications and Product Identification
| Specification | Details |
|---|---|
| Model | AUXREL |
| Platform documented here | MAXUM commercial door operators |
| Relay contacts | Two configurable relays; N.O., N.C. and common |
| External circuit restriction | Class 2 low-voltage sources only |
| Published contact limit | 42V DC or 34V AC maximum, 5A |
| AUX24 output | 24V DC, up to 1A in the documented configuration |
Before Ordering
- Identify the exact MAXUM operator and supported accessory arrangement.
- Choose the required function from the manufacturer relay table.
- Check the external device voltage, current and Class 2 power source.
- Confirm mounting, interconnection cable and commissioning requirements.
Package Contents and Separate Requirements
This offer identifies the AUXREL board. Confirm the current kit for its mounting and communication components. An external warning light, horn, power supply, loop detector or complete operator is not promised as included. If additional interface equipment is required for the intended load, select it as part of the complete electrical design rather than exceeding this board’s limits.
Safety Warnings — Read Before Installation or Service
- WARNING: Incorrect wiring can create an electrical hazard or misleading door-status indication. Use a trained commercial door technician and qualified electrical personnel where required.
- Disconnect all operator power, including battery backup where fitted, before installing the board or altering connections.
- Connect only the specified Class 2 low-voltage circuits within their ratings. Do not wire mains voltage directly to these relay contacts.
- An auxiliary indicator is not an entrapment-protection device. Test its behavior and retain every required door-safety function before normal operation.
Related Products and Important Differences
- DCWALLCTL MAXUM wall controller — a separate user-control and display accessory for supported MAXUM systems.
- TDC12X1BMC MAXUM trolley operator — a compatible-platform example; confirm the installed model and accessory requirements.
Frequently Asked Questions
Does the relay automatically power a warning light?
Not necessarily. Contacts switch an appropriately powered circuit; the separate AUX24 output has its own lower current limit.
Can it switch a 120V light directly?
No. The documented relay connections are limited to Class 2 low-voltage sources.
Is a loop detector included?
No. LPEXP and other detection equipment are separate accessories.
Does a closed-limit label guarantee the contact is on only when closed?
No. Check the exact function table and contact logic, then test the intended behavior at the door.
Need Help Confirming the Right Product?
Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.
Details
Need Help With Compatibility?
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Garage-DoorParts.com carries a large selection of residential and commercial parts, and many components can look similar while having important differences in dimensions, model numbers, voltage, mounting, or compatibility.
For the best assistance, please provide as much information as possible, including the manufacturer, model number, part number, door or operator type, dimensions, and clear photos of the existing part or equipment.
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Contact Us with your product questions and compatibility information, and we’ll do our best to point you in the right direction.
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