Sauermann Si-RM350 2-Way Manifold

Sauermann Si-RM350 Digital 2-Way Wireless HVAC Manifold Gauge

The Sauermann Si-RM350 is a professional-grade digital manifold gauge designed for HVAC and refrigeration technicians performing commissioning, maintenance, diagnostics, evacuation, and refrigerant charging on heat pumps, air conditioning systems, refrigeration equipment, and reversible systems.

Built with advanced wireless technology and smart diagnostics, the Si-RM350 delivers fast, accurate readings while simplifying troubleshooting in the field. Its rugged IP54-rated housing, anti-reflective graphical display, and long 300-hour battery life make it ideal for demanding residential, commercial, and industrial HVAC applications.

Compatible with A1, A2L, A2, and A3 refrigerants, the Si-RM350 supports a massive refrigerant database including R32, R410A, R134a, R404A, R407C, R290, R1234yf, and many more. The system also integrates with the Sauermann Pilot mobile app for wireless connectivity, smart assistant functions, data logging, and enhanced system analysis.

Key Features

• Professional digital 2-way HVAC manifold gauge
• Designed for refrigerant handling, maintenance, and commissioning
• Compatible with A1, A2L, A2, and A3 refrigerants
• Wireless connectivity with Sauermann Pilot app
• Fast, comprehensive HVAC system diagnostics
• Durable anti-reflective glass screen for outdoor visibility
• High-speed NTC temperature sensors
• Rugged IP54-rated construction
• Long 300-hour battery life
• USB-C and AA battery power options
• Supports pressure, temperature, vacuum, and hygrometry measurements

Applications

• Heat pumps
• Air conditioning systems
• Refrigeration systems
• Commercial HVAC service
• Residential HVAC maintenance
• Refrigerant charging and evacuation
• HVAC commissioning and diagnostics

Technical Specifications

• Pressure Range: -14 PSI to 870 PSI
• Protection Rating: IP54
• Wireless Connection: Yes
• Power Supply: 4 AA batteries or USB-C
• Display Type: Graphical digital display
• Operating Temperature: -4°F to 122°F
• Connection Ports: 3x 1/4" MFL male fittings
• Weight: Approximately 2.2 lbs

Included in the Kit

• Sauermann Si-RM350 Digital Manifold
• Adjusting certificate
• Hard plastic carrying case

Compatible Accessories & Probes

• Si-RV4 Wireless Vacuum Probe
• Si-RP4 Wireless Pressure Probe
• Si-RT2 Wired Temperature Clamp
• Si-RT7 Wireless Temperature Clamp
• Si-RT5 Wired Temperature Probe
• Si-TH4 Hygrometry / Temperature Probe
• Si-RS1 Digital Refrigerant Scale

Perfect for professional HVAC technicians looking for a reliable wireless digital manifold gauge with advanced diagnostics, broad refrigerant compatibility, and smart mobile app integration.

Technical Documents

• Technical Data Sheet
• User Manual
• Simplified Manual
• Product Brochure

Warranty Information

Sauermann products are built for professional HVAC and refrigeration applications and are backed by the manufacturer’s warranty against defects in materials and workmanship. Contact us for complete warranty details and support information.