The document describes three photocell models: Super 6, SS6, and SS3. The Super 6 uses the highest grade components including ultra long-life capacitors and through-hole plating to guarantee maximum operating life. It is available with a 10 year warranty. The SS6 and SS3 have robust and proven circuitry that ensures long, accurate life through reduced manufacturing costs. All three models utilize state-of-the-art circuit design and extremely accurate photocell technology.