TRIAD Control SuperLight Floating Beam Reciever Light Curtain PN#- TR-24-8K-20 This is good stuff. This does constant scan and it has three floating scan settings!! hard to find this. Please check out my other version of this the -AU. Not sure what the difference is on these two, but this is cool. Condition - Very good condition. I have not tested this, but all the rest of the stuff we bought off this factory has worked perfectly. This may need calibration, but will work or money back. Nothing else comes with the unit. Will ship international. please ask questions. Please look at pictures. TRIAD Control SuperLight Floating Beam Reciever Light Curtain PN#- TR-24-8K-20 This is good stuff. This does constant scan and it has three floating scan settings!! hard to find this. Please check out my other version of this the -AU. Not sure what the difference is on these two, but this is cool. Condition - Very good condition. I have not tested this, but all the rest of the stuff we bought off this factory has worked perfectly. This may need calibration, but will work or money back. Nothing else comes with the unit. Will ship international. please ask questions. Please look at pictures.