UEI LPKITPLUS LP PRO PLUS TEST KIT CD100A Simple adjustable tic rate Easy one hand operation Long 18” gooseneck Tip light in sensor cover illuminates the area of the leak Sensor provides accurate detection Audio and visual tic rate Headphone jack 1 Year limited warranty CO71A Preset alarms 3-color warning light Audible alert MAX capture Low battery indicator CO detection to 999 ppm Backlit display One button auto zero 3 Year limited warranty (5 Year expected sensor life) EM151 Single input to measure positive and negative pressure to 20” wg Ruggedized, including rubber boot with integral magnet Simple two-button operation Measures in inches water gauge Auto power-off after 5 minutes of no activity 1 Year limited warranty