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Sauermann Si-RM450 4-Way Wireless Digital Manifold

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Supported models: Si-RM450 (4-valve; the 2-valve Si-RM350 is the sibling model)

  • Bluetooth
  • Refrigerant Pressure
  • Refrigerant Temperature
  • Vacuum Level
Connects via:
  • Direct Connect
No Beaconing

Four-valve wireless digital manifold supporting 130+ refrigerants, with wired and wireless probe connectivity up to 100 m and Sauermann Pilot app guidance.

Sauermann Si-RM450 4-Way Wireless Digital Manifold

The Sauermann Si-RM450 is a four-valve wireless digital manifold for commissioning and servicing all types of refrigerant-based installations, including heat pumps, air conditioning, refrigeration, and reversible systems. It measures pressure from -1 to 60 bar (-14 to 870 psi) at plus or minus 0.50% of full scale, supports 130+ refrigerants with automatic updates, and is compatible with A1, A2L, and A3 refrigerants. The unit works with both wired and wireless probes at up to 100 m (328 ft) range, carries eight integrated measurement programs with COP and EER efficiency calculations, and logs data internally for up to three days on a 300-hour battery. Its IP54 anti-glare glass display, USB-C power, and Sauermann Pilot app guidance make it a full-shift field instrument that streams live pressure and temperature into measureQuick.

Specifications

SpecificationValue
Pressure measuring range-1 to 60 bar (-14 to 870 psi)
Pressure sensing accuracy+/- 0.50% of full scale
Pressure resolution0.01 bar / 0.1 psi / 1 kPa / 0.001 MPa
Overload65 bar (943 psi)
Burst pressure150 bar (2175 psi)
Vacuum range (via Si-RV4 probe)50 to 25,000 microns
Pressure connectors3x 1/4 in MFL male + 1x 3/8 in MFL male
Temperature connectors2x wired jack (NTC)
Refrigerants130+ (A1 / A2L / A3 compatible)
DisplayGraphic 240 x 128 px, anti-reflective glass
Wireless frequency2402 to 2480 MHz, 8 dBm
Wireless rangeUp to 100 m (328 ft) to probes
Power supply4x LR6/AA 1.5 V; alternative USB-C
Battery life300 hours (20 C, no backlight/wireless)
Data loggingUp to 3 days internal memory
Operating temperature-20 to 50 C (-4 to 122 F)
Housing materialPolyamide reinforced with 30% glass fiber
IP ratingIP54
Dimensions162 x 68 x 168 mm (L x W x H)
Weight0.98 kg (2.16 lb)

Product line

Si-RM Manifolds

Sauermann's Si-RM wireless digital manifolds for commissioning and servicing refrigerant systems, guided by the Sauermann Pilot app.

View the full Si-RM Manifolds line →

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