Digi-Code CR-2149 Universal Garage Door Safety Sensor Photocell Kit – Sender & Receiver

The Digi-Code CR-2149 Universal Photocell Kit is a replacement garage door safety sensor system designed to work with many major brands of residential garage door openers.

The kit includes both the sending and receiving photo-eye sensors, mounting brackets, and installation hardware.

Its self-programming and non-polarized design makes retrofit installation especially convenient. In many compatible applications, the installer can reuse the existing safety-sensor wiring, connect the new sensors without worrying about wire polarity, mount and align the beams, and restore normal safety-sensor operation.

### Product Features

- Genuine Digi-Code universal safety sensor kit
- Model CR-2149 / CR2149
- Includes sending and receiving photocells
- Universal replacement design
- Compatible with many major residential garage door opener brands
- Self-programming sensor system
- Non-polarized wiring
- Cannot be connected backwards due to wire polarity
- Designed for quick retrofit installations
- Enhanced filtering helps reduce direct sunlight interference
- LED alignment indication
- Mounting brackets included
- Installation hardware included
- Made in USA
- 18-month manufacturer warranty

### Specifications

- Manufacturer: Digi-Code
- Model: CR-2149 / CR2149
- Product Type: Garage Door Safety Sensor / Photocell Kit
- Application: Residential Garage Door Openers
- Sensor Type: Infrared Safety Beam
- Wiring: Non-Polarized
- Programming: Self-Programming
- Sender Included: Yes
- Receiver Included: Yes
- Mounting Brackets Included: Yes
- Installation Hardware Included: Yes
- Warranty: 18 Months

### What Is It Used For?

The CR-2149 replaces damaged, failed, or unreliable garage door opener safety photo eyes.

Garage door safety sensors are mounted near the bottom of the garage door tracks and project an infrared beam across the door opening.

If a person, vehicle, pet, or object interrupts the beam while the garage door is closing, the compatible opener should stop and reverse according to its designed safety operation.

### Universal Replacement Design

The Digi-Code CR-2149 is designed to replace photo-eye systems on many major residential garage door opener brands.

Compatible brands include many models from:

- LiftMaster
- Chamberlain
- Craftsman
- Genie
- Overhead Door – 1995 and newer compatible models
- Challenger
- Stanley
- Linear
- Moore-O-Matic
- Raynor models manufactured by Chamberlain

Compatibility can vary by opener model and production generation.

Always verify the exact garage door opener model and original sensor system before ordering.

### Self-Programming Installation

One of the key advantages of the CR-2149 is its self-programming design.

For many compatible retrofit installations:

1. Disconnect power to the garage door opener.
2. Remove the existing failed sensors.
3. Connect the CR-2149 sensors to the existing safety-sensor wiring.
4. Mount the sending and receiving sensors.
5. Align the sensors across the garage door opening.
6. Restore opener power.
7. Verify proper sensor and reversing operation.

No separate radio programming is required.

### Non-Polarized Wiring

The CR-2149 sensors use non-polarized wiring.

This means the sensor wires cannot be accidentally reversed because of positive/negative polarity during a compatible installation.

This feature can simplify replacement and reduce wiring mistakes during service calls.

### Improved Sunlight Filtering

Direct morning or afternoon sunlight can interfere with some garage door safety sensors.

The CR-2149 incorporates enhanced sunlight filtering to help reduce nuisance problems caused by bright sunlight entering the receiving sensor.

This can be particularly useful when the garage door opening faces directly toward strong morning or afternoon sun.

### Common Symptoms of Failed Safety Sensors

Replacement may be appropriate when:

- Garage door will open but will not close normally
- Door begins closing and immediately reverses
- Safety sensor LED will not remain illuminated
- Existing sensor is physically damaged
- Sensor wiring is functional but one photocell has failed
- Sunlight repeatedly interferes with the original sensors
- Original sensors are obsolete or difficult to replace

These symptoms can also be caused by misalignment, damaged wiring, incorrect opener settings, or other opener problems.

Proper diagnosis is recommended before replacing parts.

### LED Alignment

The sensor system includes visual LED indication to assist with alignment.

After installation, both sensors should be positioned so the infrared beam travels unobstructed across the garage door opening.

A stable alignment indication should be confirmed before returning the opener to normal operation.

### Package Contents

Includes:

- 1 – Digi-Code CR-2149 Sending Sensor
- 1 – Digi-Code CR-2149 Receiving Sensor
- 2 – Mounting Brackets
- 4 – Mounting Screws
- Installation Instructions

Garage door opener, existing field wiring, tracks, and other accessories are not included unless specifically stated otherwise.

### Important Compatibility Note

Although the CR-2149 is designed as a universal residential replacement sensor, garage door safety systems vary between manufacturers and generations.

Before ordering, verify:

- Garage door opener manufacturer
- Exact opener model
- Approximate manufacturing year
- Existing safety sensor configuration
- Existing low-voltage wiring condition

Do not assume compatibility solely because the opener brand appears on the compatibility list.

### Important Safety Information

Garage door photo eyes are part of the opener's entrapment-protection system.

Never bypass, disable, jumper, or intentionally defeat the garage door safety sensors.

After installation:

- Confirm both sensors are correctly aligned
- Verify the beam is unobstructed
- Close the garage door
- Interrupt the safety beam while the door is closing
- Confirm that the garage door stops and reverses as required
- Test the opener's automatic reversal system

Do not return the garage door opener to normal service until all required safety systems are functioning correctly.