Job Link� System Charge and Air Kit - Take a full system snapshot quickly and easily with the JL3KH6 Charge and Air Test Kit. This kit consists of 2 pressure probes, 2 pipe clamps, and 2 psychrometers in a quick access padded case. All measurements can be sent up to 1000' away directly to your mobile device with the Job Link� System mobile app. Each tool is designed for agility and speed. The pressure probes fit into tight spaces. The pipe clamps use the new Rapid Rail� sensor design delivering accuracy, speed, and agility, even on the most awkward pipe configurations. The psychrometers' flexible narrow probes and configurable magnet make it easy to measure supply plenums, ducts, and elevated registers. Do more with Job Link probes!