The ergonomically designed eL-720 fits comfortably in your hand. Operating for 20 hours on four standard AA alkaline batteries, its long-life sensor is designed to quickly detect concentrations of carbon dioxide (CO2) gas as low as 400 ppm over ambient. False alarms are eliminated due to its high selectivity. The eL-720 is said to be ideal for servicing CO2 refrigeration systems and beverage delivery systems.

Core Enterprises, Inc., 3650 Coral Ridge Drive, Suite 101, Coral Springs, FL 33065; 954-227-0781; www.accutools.com