Genie Operator Series II Photocells (Can be used on all Genie openers with photo eyes). These are the newest style of Genie and Overhead safety eyes, they come with built in mounting brackets that are much stronger and less likely to be knocked or bent out of alignment. They eyes are also permanently mounted to the bracket which is great improvement over the old series of Genie Sensor eyes. The old ones where bad about falling off the bracket and or the plastic retainer that held it to the flimsy metal mount was notorious for breaking. These are a great improvement and are hassle free to install.