Mastercool 55975 Intella-Sense III Combustible Gas Leak Detector is engineered for HVAC and industrial technicians who need precise, fast detection of combustible gases indemanding environments. It utilizes a heated tin oxide sensor known for its excellent sensitivity and rapid response time. Paired with a smart microprocessor that continuously calibrates for optimal performance.

• ADVANCED SENSOR TECHNOLOGY - Heated tin oxide sensing element provides fast, accurate detection of combustible gases with 1 second response time
• COMBUSTIBLE GAS DETECTION - Detects methane, propane, acetone, ammonia, gasoline, hydrogen, butane, and more
• 15.5" FLEXIBLE PROBE - Reaches difficult areas with intelligent tip that senses environmental conditions to reduce false alarms
• SIX-LED DISPLAY INTERFACE - Clear LED indicators show leak signal strength, sensitivity level, and diagnostics like low battery or sensor faults
• INTELLIGENT MICROPROCESSOR - Auto-selects optimal sensor conditions for consistent performance and extended sensor life
• MULTI-FUNCTION KEYPAD - Easily control ON/OFF, volume, sensitivity (High/Medium/Low), and PEAK hold for complex leak environments
• COMPLETE KIT INCLUDED - Comes with blow-molded case, 2 "C" batteries, leak test vial, and replacement filters
• U.S.-BASED SUPPORT - Backed by Mastercool reliable service and support team

The Prowler is JB's new, revolutionary refrigerant gas leak detector. Using JB's proprietary electrochemical sensor technology for unparalleled accuracy coupled with the unique user features, there is simply no better hand held probe type service leak detector system on the market. The sensor is durable and will not be damaged by overexposure to refrigerant gas or contaminated by condensate water. The sensitivity is extremely accurate for ALL HFC, HCFC, blends, and the new HFO refrigerants. The technology provides for low battery consumption, excellent circuit stability, extremely long sensor life, and the electrochemical function of the sensor does not diminish over time with use. The sensor life has been tested to last over ten years. Safe to use in combustible atmosphere. The Prowler features a large LCD screen that has a backlight and flips upward so that the user can adjust the screen position for better visibility. The bar graph shows the intensity of the leak to help pinpoint the source of the leak. Sensitivity can be programmed to high, medium, and low. If a leak is detected, there is an audible alarm (which can be muted), a bar graph on the screen, and the handle will vibrate. The Prowler does not require rechargeable batteries as it operates on 4 AA batteries (included).

• Detects all HFC, HCFC, HFO and blended refrigerants
• 16 in. flexible probe
• Infrared sensor life 10-years
• Easy to read LED display
• Carrying case

The Mastercool 55900 Intella-Sense II is a compact, professional-grade leak detector. Designed to deliver reliable performance in real world HVAC and automotive environments. Using an advanced heated tin oxide sensor, it detects refrigerant leaks down to 0.15oz. year with exceptional speed and precision. Designed for R134a, R1234yf, and all common refrigerants.

• ADVANCED SENSOR TECHNOLOGY - Heated tin oxide sensor detects refrigerants with high accuracy
• PEAK FUNCTION - Highlights the highest leak detected for multi-leak environments
• INTELLIGENT TIP DESIGN - Reduces false alarms by sensing and adjusting to the environment
• MULTI-COLOR LED INDICATORS - Visual signal strength and diagnostic feedback in real-time
• FLEXIBLE PROBE - 15.5" gooseneck probe reaches tight or hidden leak zones with ease
• INTERTEK CERTIFIED - Complies with J2791 (R134a), J2913 (R1234yf), and EN 14624 standards
• INCLUDES ACCESSORIES - Comes in a blow molded case with leak test vial, replacement filters, and 2 "C" batteries
• USER-FRIENDLY INTERFACE - Volume/mute control, three sensitivity levels, and six LED indicators for signal Display (red, yellow or green)
• U.S. BASED CUSTOMER SUPPORT - Reliable service from Mastercool's New Jersey headquarters