Linear Delta-3 DR 1-Channel Receiver – 310 MHz – 24 VAC/VDC – 8 DIP Switch

# Linear Delta-3 DR 1-Channel Receiver – 310 MHz – 24 VAC/VDC – 8 DIP Switch

The **Linear Delta-3 DR 1-Channel Receiver (DNR00001)** is a 310 MHz fixed-code radio receiver designed for compatible garage door openers, automatic gate operators, and access-control systems.

This receiver allows an older operator or control system to receive commands from compatible **Linear Delta-3 310 MHz transmitters**. It uses an **8-position DIP-switch coding system with 256 possible code combinations** and activates one connected device.

The DR receiver is especially useful for replacement and retrofit applications where the existing garage door or gate operator is still mechanically functional but needs a compatible external radio receiver.

## Specifications

| Specification | Details |
|---|---|
| Brand | Linear |
| Model | DR / DR3A |
| Product Number | DNR00001 |
| Product Type | Single-Channel Radio Receiver |
| Number of Channels | 1 |
| Frequency | 310 MHz |
| Programming | 8-Position DIP Switch |
| Available Codes | 256 |
| Input Power | 24 VAC/VDC |
| Connection | 3-Terminal |
| Antenna | Wire Lead Antenna |
| Approx. Dimensions | 5.5" W x 4" H x 1.25" D |
| Application | Garage Doors, Gates & Access Control |

## Key Features

- Genuine Linear Delta-3 receiver
- Single-channel operation
- 310 MHz radio frequency
- 8-position DIP-switch programming
- 256 selectable fixed-code combinations
- Operates on 24 VAC or 24 VDC
- Three-terminal connection
- Wire lead antenna
- Mounting bracket supplied
- Suitable for garage door, gate, and access-control applications
- Useful for upgrading or restoring older operator radio systems

## How It Works

The Linear DR receives a **310 MHz Delta-3 radio signal** from a compatible transmitter.

The eight DIP switches inside the receiver are set to a specific ON/OFF pattern. A compatible transmitter must be programmed with the same eight-switch pattern.

When the codes match and the transmitter button is pressed, the receiver activates its output and sends the command to the connected garage door opener, gate operator, or other control equipment.

This is a **fixed-code DIP-switch system** and does not use a modern learn-button or rolling-code programming method.

## Compatibility

Designed for **Linear Delta-3 310 MHz transmitters and accessories using the compatible 8-DIP-switch coding format**.

Common compatible Delta-3 transmitters may include:

- Linear DT
- Linear DTC
- Linear DT2A
- Linear DT4A
- Linear LB
- Compatible Delta-3 310 MHz keypads
- Other genuine or compatible Delta-3 transmitters using the same 310 MHz / 8-switch format

This receiver can be used with many older residential garage door operators, commercial door operators, automatic gates, and access-control systems when the operator provides the required control connection and power.

## Important Compatibility Note

**310 MHz frequency alone does NOT guarantee compatibility.**

Before ordering, confirm that your transmitter uses:

- **310 MHz frequency**
- **Linear Delta-3 technology**
- **8 DIP switches**
- Compatible fixed-code programming

Do not confuse this receiver with other Linear radio systems such as:

- Multi-Code 300 MHz
- MegaCode
- Stanley-compatible systems
- Other 310 MHz products using a different coding format
- Modern rolling-code receivers

A remote operating at the same frequency but using a different coding technology will not necessarily operate this receiver.

## 24 VAC/VDC Power Requirement

The DR receiver requires **24 VAC or 24 VDC power**.

In many installations, the garage door or gate operator supplies the required 24-volt power directly to the receiver.

If the existing operator cannot supply the required voltage, a compatible external transformer or power supply may be required.

Always verify the operator's terminal configuration and available voltage before connecting the receiver.

## 3-Terminal Connection

The Linear DR uses a **three-terminal connection** for connection to compatible operators and control systems.

Because operator wiring varies by manufacturer and model, identify the correct power and activation terminals before installation.

Do not connect the receiver to an unknown voltage source without verifying the operator's wiring diagram.

## Ideal for Older Garage Door & Gate Systems

The Linear Delta-3 receiver can be a practical solution when an older garage door opener or gate operator is still working properly but:

- The original receiver has failed
- Replacement remotes are difficult to find
- An external receiver is needed
- The operator needs to be converted to a compatible Delta-3 remote system
- Additional radio-control capability is required

Adding an external receiver can sometimes allow an older operator to remain in service without replacing the complete opener solely because of a radio-control problem.

## Package Contents

Package includes:

- **(1) Linear Delta-3 DR 1-Channel Receiver**
- Wire lead antenna
- Mounting bracket / mounting hardware as supplied by the manufacturer

Remote transmitters, transformer, operator, and other accessories are not included unless specifically stated.

## Programming

To program the receiver:

1. Disconnect power before accessing wiring or internal components.
2. Locate the eight DIP switches inside the receiver.
3. Select the desired ON/OFF switch pattern.
4. Open the compatible Delta-3 transmitter.
5. Set its eight DIP switches to exactly the same pattern.
6. Restore power after installation.
7. Test operation while the garage door or gate is fully visible.

All eight switches must match between the receiver and transmitter.

## Installation & Safety

Installation requires knowledge of low-voltage operator wiring and the specific garage door or gate operator being connected.

Always verify:

- Required supply voltage
- Operator terminal configuration
- Receiver wiring
- Transmitter compatibility
- DIP-switch settings
- Safety-device operation

Never bypass photo eyes, monitored safety edges, entrapment-protection devices, or other required operator safety equipment.

⚠️ **Automatic garage doors and gates can cause serious injury or property damage.**

Test the complete system after installation and make sure the moving door or gate reverses or stops correctly when required by the operator's safety system.

## Important Ordering Information

Before ordering, verify all three:

**310 MHz + Linear Delta-3 + 8 DIP switches**

This receiver is **not universal**.

If your existing remote or receiver uses a different frequency, learn-button system, rolling-code technology, or a different number of DIP switches, this may not be the correct replacement.