Snappy Sensors kit (used on 1997-current units)one side has amber led other side has green led units attach to brackets by head of carriage bolt (they do not have a bolt hole through them) units measure appx 2-3/8 " long w/3 feet 2-conductor wire See video for help selecting the proper eyes.
Great replacement sensors. Mine got wet during a flood.
Ordered the prewired sensors and they came with wire connectors. I spent more time taking the old ones off than I did installing the new ones. They work perfectly.
Very good product and reasonable cost.
Thank you so much for the fast service of the sensors. The price was three times cheaper than we could have bought them here. Our garage door is working just GREAT!! Thanks again.