Chamberlain Corp 820CB Garage Door Safety Sensor 2 Pack

Product Description

The CHAMBERLAIN CORP 820CB is a replacement safety sensor kit designed for residential garage door openers. The sensor system uses an infrared beam to detect obstructions in the door's path, preventing the door from closing onto people, pets, or objects. Each kit includes two sensors, mounting brackets, hardware, and 3-foot extension wire connectors for a straightforward installation. This is the type of component a garage door technician or experienced installer replaces when a system fails the safety reversal function required by current standards.

This kit is suited for residential garage door opener installations where the existing safety sensors have failed or been damaged. It fits Chamberlain garage access systems manufactured after 1997 and is also compatible with other garage door opener systems of the same era. Typical install scenarios include service calls to restore a non-functional safety circuit or during a full opener replacement where the original sensors are not reused.

Key Features

• Infrared obstruction detection prevents door closure onto people, pets, or objects
• Includes 2 sensors per pack for a complete sensor pair replacement
• Mounting brackets and hardware included for direct installation
• 3-foot extension wire connectors included to ease routing to the opener
• Compatible with Chamberlain and other garage access systems manufactured after 1997

Compatibility

Fits Chamberlain and other garage access systems manufactured after 1997.

Installation Notes

Installation is typically performed by a qualified garage door technician. Disconnect power to the garage door opener before removing or wiring any sensor components. Sensors must be aligned so the infrared beam passes cleanly between the transmitter and receiver units at door-track level. Verify proper safety reversal function after installation per applicable local and national safety codes before returning the system to service.