Universal compatibility: The security sensor beam replacement suitable for 820CB and for Gaiden opening device is compatible with 1997 to the present.820CB is a new version of the door sensor replacement. It is suitable for your 41A5034 (also known as: 2610459 012381050345 and 041A5034), G801CB-P 801CB 41A5266-1Your garage bottle opening must be equipped with a sensor.Installing these products will not increase functionsThis product provides security for one door.Easy to install and programmed,Note: Before installing a safe reverse sensor, make sure the garage door opening device is not connected to the power supply.Specifications: B:Set 1Colour:As ShownMaterial:Metal PlasticPackage Contents:1set x garage door sensorsOnly 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.