Dytran Sensor Select™ is an inventory stocking program designed for rapid delivery of our most popular models. The program ensures better availability of the products that our customers need most, and Sensor Select™ products come with an enhanced Lifetime Warranty against defects in materials and workmanship (all other regular catalog sensors come with a 5-year warranty, Modified products have a 2-year warranty, cables and accessories have a 1-year warranty). Sensor Select™ is the best way to look for small quantities of the most popular products to get you the sensors you need without having to tour the entire product line.