Mastercool 55900 Combo Kit – Intellasense II Leak Detector + R1234yf/R134a Manifold Gauge Set – Heated Tin Oxide Sensor – Flexible Probe – Includes Batteries, Hoses, and Couplers

Overview The Mastercool 55900-COMBOKIT delivers a professional-grade solution for HVAC and automotive technicians who need both electronic leak detection and accurate refrigerant pressure measurement. This comprehensive combo includes the advanced Intellasense II Leak Detector and the 89661-AYF Aluminum Manifold Gauge Set, packaged in a custom carrying case for convenience and portability. Key Features ✔️ DUAL FUNCTIONALITY – Combines the 55900 Intellasense II leak detector with the 89661-AYF aluminum manifold gauge set for a complete A/C diagnostic solution. ✔️ ADVANCED SENSOR TECHNOLOGY – Heated tin oxide sensor with 3 sensitivity levels detects leaks as small as 0.15 oz/yr. ✔️ DIGITAL FEEDBACK SYSTEM – Color-coded LED indicators provide real-time leak strength, sensitivity level, and diagnostic alerts. ✔️ PROFESSIONAL GAUGE SET – Includes 2 1/2" recalibrateable silicone-dampened gauges, R134a and R1234yf couplers, and three 60" hoses. ✔️ USER-FRIENDLY DESIGN – Flexible 15.5" probe, intuitive button controls, and built-in peak hold function for pinpoint accuracy. ✔️ CERTIFIED & COMPLIANT – Meets SAE J2791 (R134A), J2913 (R1234YF), and EN 14624 certifications for professional reliability. Why Mastercool Mastercool is trusted by technicians worldwide for its durable, high-performance HVAC tools and equipment. Our leak detectors and gauge sets are engineered to deliver precision, ease of use, and long-term reliability—backed by our U.S.-based customer support team. Technical Specifications 55900 Intellasense II Leak Detector: – Sensor Type: Heated Tin Oxide – Sensor Life: 2,000 hours – Sensitivity: 0.15 oz/yr (high), 0.25 oz/yr (med), 0.5 oz/yr (low) – Response Time: <1 second – Battery: 2 x C Alkaline (included) – Probe: 15.5" flexible – Display: LED indicators (leak signal, sensitivity level, diagnostic status) – Controls: ON/OFF, volume, sensitivity, peak 89661-AYF Manifold Gauge Set: – Aluminum manifold with 2 1/2" gauges – R134a and R1234yf couplers – 3 x 60" standard hoses – Includes: Acme and R1234yf adapters, large sight glass, and molded case

• ✔️ COMPLETE DIAGNOSTIC KIT – Includes 55900 Intellasense II leak detector and 89661-AYF manifold gauge set for A/C systems
• ✔️ ADVANCED SENSOR TECHNOLOGY – Heated tin oxide sensor detects all refrigerants with high sensitivity
• ✔️ CLEAR VISUAL FEEDBACK – LED indicator bar shows leak size, battery status, and sensitivity level
• ✔️ USER-FRIENDLY CONTROLS – Volume, peak hold, and 3-level sensitivity adjustment for precise leak detection
• ✔️ PREMIUM MANIFOLD SET – Includes R1234yf/R134a couplers, adapters, and 60" hoses in aluminum gauge body
• ✔️ FLEXIBLE PROBE DESIGN – 15.5” intelligent tip with ambient sensing minimizes false alarms
• ✔️ U.S.-BASED SUPPORT – Backed by Mastercool’s excellent service and customer care