The Mastercool 55900-COMBOKIT Electronic Leak Detector Combo Kit combines the 55900 Intella Sense II Leak Detector and 89661-AYF Aluminum Manifold Gauge Set together for one powerful combination refrigerant kit.

The 55900 Intella Sense II Leak Detector is certified by Intertek to meet J2791 (R134a), J2913 (R1234yf) and EN 14624 specifications. At the heart of this leak detector is a new low power metal oxide gas sensor with superior performance properties such as lower current consumption and sensor longevity. The new sensor is characterized by high sensitivity and fast response upon detecting the presence of extremely small levels of chlorofluorocarbon gases. For this reason, this sensor was selected and integrated into the 55900 Leak Detector.

In addition, a powerful microprocessor was integrated into the design that automatically selects the best operating condition for the sensor to ensure optimum performance throughout the life of the sensor.

The 89661-AYF Aluminum Manifold Gauge Set features a professional extruded aluminum block with 2-1/2 inch silicone-dampened gauges that can be easily recalibrated in the field. The silicone-dampening of the gauges allows for less needle movement which creates readings with higher levels of accuracy. The free-floating piston type valves reduce O-ring wear and an extra access port is included for a vacuum line.

The extra large sight glass enables easy visual refrigerant checks during operation. The knobs are large and easy-to-use. The R1234yf high and low side couplers with extended disconnect protection sleeve meet SAE J639 and J2888 specifications. The R134a high and low side manual couplers meet SAE, UL and EPA requirements for containment of refrigerant.