Features: - Applicable models: Garage door sensor is suitable for Linear garage door openers LSO50, LDO33, and LDO50. - Function: The safety sensor emits an invisible beam to detect obstacles. If an object is detected, the garage door will automatically reverse to prevent damage and accidents. - High-quality materials: The sensor housing is made of durable, corrosion-resistant, and wear-resistant materials designed for long-term use. - Easy to install: Compact design allows for simple and space-saving installation, helping to save time and effort. - When to replace: 1. The garage door reverses without any obstruction present. 2. The green indicator light is on and the yellow light is off. 3. The sensor fails to operate properly in extreme cold or under prolonged UV exposure. Specifications: - Usage: Direct installation - Installation guidelines: 1. Install sensors no higher than 6 inches (approximately 15.4 cm) from the ground. 2. Ensure lenses are properly aligned. 3. Avoid direct sunlight on the receiving sensor lens. - Material: Plastic and copper wire - Color: Black Package Contents: 1 set garage door safety sensor (includes accessories as shown) Note: The package includes only the items listed above. Other products are not included. Lighting and display differences may cause slight color variations between the product image and actual item. Measurement may vary by +/- 1-3 cm.