Detailed Product Description ABU-20Photoelectric Beam, 2 Beams, 20M. With BracketABU-40Photoelectric Beam, 2 Beams, 40M. With BracketABU-60Photoelectric Beam, 2 Beams, 60M. With BracketABU-80Photoelectric Beam, 2 Beams, 80M. With BracketABU-100Photoelectric Beam, 2 Beams, 100M. With BracketABU-150Photoelectric Beam, 2 Beams, 150M. With Bracket