for maximum durability and reliability. Seamless fit, perfect fit for your . Easy to install, no complicated tools required, easy to use. Professional workmanship, exquisite surface, novel and unique style Type:QRB1 Flame Detector Photosensitive Electric Eye Burner Detection Photoresistor For Burner Waste Oil Note: Installation guide not included, we strongly recommend you seek professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: As shown Material: plastic Package Contents: 1 * QRB1 Flame Detector Photosensitive Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.