








🚪 Safety that’s always watching—upgrade your garage’s smart shield!
The Chamberlain 820CB Replacement Garage Door Safety Sensor 2-Pack offers universal compatibility with garage door openers made after 1997, featuring a low-profile design that reduces misalignment risk. Equipped with automatic door reversal upon obstruction, these UL-certified sensors come with mounting brackets and extension wire for easy installation, ensuring enhanced safety and seamless operation.

| Recommended uses for product | Preventing accidents and reversing garage doors upon obstruction |
| Specification met | UL |
| UPC | 012381197460 |
| Number of pieces | 2 |
| Manufacturer | CHAMBERLAIN CORP |
| Part Number | 820CB |
| Product Dimensions | 5.28 x 2.9 x 3.15 cm; 290 g |
| Item model number | 820CB |
| Size | S |
| Style | Sensors |
| Item Package Quantity | 1 |
| Included Components | 2-sensors, mounting brackets, 18 in. of extension wire, instruction manual |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 290 g |