Sauermann Si-RP4 Wireless Pressure Probe
Supported models: Si-RP4 (sales reference 28144)
- Bluetooth
- Pressure
- Refrigerant Pressure
- Direct Connect
Wireless high/low pressure probe for AC, refrigeration, and heat pumps, A1/A2L/A3 compatible, connecting to the Si-RM350/Si-RM450 manifolds and Sauermann Pilot app.
The Sauermann Si-RP4 is a wireless pressure probe providing high- and low-side pressure measurements for air conditioning, refrigeration, and heat pump installations. Its light, curved design makes it easy to plug in, and it reads -1 to 60 bar (-14 to 870 psi) at plus or minus 0.5% of full scale. It is compatible with A1, A2L, and A3 refrigerants and connects over Bluetooth Low Energy at up to 100 m (328 ft) range to the Si-RM350 and Si-RM450 manifolds and the Sauermann Pilot app, feeding refrigerant-circuit pressure into measureQuick via the manifold and app ecosystem.
Specifications
| Specification | Value |
|---|---|
| Pressure measuring range | -1 to 60 bar (-14 to 870 psi) |
| Pressure sensing accuracy | +/- 0.5% of full scale |
| Resolution | 0.01 bar / 0.1 psi / 1 kPa / 0.001 MPa |
| Overload | 65 bar (943 psi) |
| Burst pressure | 150 bar (2175 psi) |
| Connection | 1x 1/4 FFL female |
| Power supply | 3x LR03 AAA 1.5 V alkaline |
| Battery life | 150 h @ 20 C / 68 F |
| Wireless frequency | 2402 to 2480 MHz, 8 dBm |
| Wireless range | Up to 100 m (328 ft) |
| App compatibility | Android 11.0, iOS 15, BLE 5.0 (BLE 4.0 with reduced range) |
| IP rating | IP54 |
| Housing material | Polyamide 6.6 + 30% glass fiber & TPE |
| Dimensions | 178 x 37.7 x 45 mm (L x W x H) |
| Weight | 200 g (0.44 lb) |
Product line
Probes
Sauermann's wireless Si refrigeration probes for temperature, pressure, humidity, and static pressure measurement.
View the full Probes line →-
Sauermann Si-PM3 Wireless Differential Pressure Manometer
Palm-sized wireless differential pressure manometer (+/- 150 hPa) for static and differential pressure, running on the separate Si-HVACR Measurement app.
-
Sauermann Si-RT7 Wireless Temperature Clamp
Wireless pipe temperature clamp for superheat and subcooling, fitting pipes 6 to 42 mm and connecting to the Si-RM350/Si-RM450 manifolds and Sauermann Pilot app.
-
Sauermann Si-TH4 Wireless Psychrometer
Wireless psychrometer measuring temperature and humidity with dry/wet bulb calculation, connecting to the Si-RM350/Si-RM450 manifolds and Sauermann Pilot app.
Alternatives
Tools with similar capabilities that also work with measureQuick.
-
Seitron Be Cool Evo M4S
Four-way digital manifold with a 5-inch color touchscreen, a 150-plus refrigerant database, and direct Bluetooth streaming to measureQuick.
-
Seitron Be Cool Evo T1S
Wireless clamp-on smart temperature probe that pairs with the Be Cool Evo M4S manifold or streams stand-alone to a phone over Bluetooth 5.0.
-
CPS BlackMax BMD200A 4-Valve Wireless Digital Manifold
Four-valve wireless digital manifold anchoring the next-generation BlackMax platform, with a full-screen customizable display, A2L-ready refrigerant support, and live streaming to measureQuick.