Fieldpiece SM380V SMAN manifolds, black - Wireless Manifold

Our review of the Fieldpiece SM380V finds it best suited for HVAC technicians who need a rugged, field-ready digital manifold with an integrated micron gauge. The SM380V replaces the SMAN300 series and keeps the simple three-valve layout technicians expect while adding a built-in micron gauge and wireless range up to 350 ft, which is the single biggest reason to buy: it combines accurate vacuum measurement with robust wireless convenience in one handheld unit. This review looks at real-world usability, construction, and where the SM380V may not be ideal.

Key Features

• Three-port digital manifold: The three valve design provides familiar control and flow options for common service tasks and charging procedures.
• Built-in micron gauge: The integrated micron measurement removes the need for a separate gauge when pulling deep vacuums, saving time and rigging complexity.
• Wireless connectivity: A 350 ft wireless range lets technicians view readings remotely without needing the separate JL2 transmitter.
• Rugged construction: Designed for use in the field, the SM380V is built to withstand jobsite knocks and frequent handling.
• Replacement for SMAN300 series: Directly replaces SMAN320, SMAN340 and SMAN360 models while consolidating meter functions into a single updated unit.

Who It's For

HVAC and refrigeration technicians who perform install and service work and value an all-in-one manifold with vacuum measurement will appreciate the SM380V. The integrated micron gauge is particularly useful for those who routinely pull deep vacuums and want fewer separate instruments to manage.

Users who require highly specialized or laboratory-grade instruments, or those who need advanced multi-port manifolds beyond a three valve layout, may prefer a different tool. Also, technicians concerned about long-term accuracy for specific subcool calculations should verify performance against trusted references during the first year of use.

Pros & Cons

Pros

• Built-in micron gauge eliminates the need for a separate vacuum meter, simplifying setups.
• Wireless range to 350 ft provides convenient remote monitoring on larger jobsites.
• Rugged, field-oriented construction stands up to daily use and handling.

Cons

• Some users report mixed accuracy and occasional malfunction after extended use, so calibration checks are advisable.
• A three-port layout may not satisfy technicians who need more ports or advanced manifold features.

Specifications

Our Verdict

The Fieldpiece SM380V is a solid choice for technicians who want a durable, wireless three-port manifold with a built-in micron gauge. It streamlines vacuum and pressure work by combining functions most techs use into one unit and replaces the older SMAN300 series well. Buyers should perform routine checks for accuracy over time, but for everyday HVAC and refrigeration service the SM380V delivers good value and practical durability.

Frequently Asked Questions

Does the SM380V need a separate transmitter?
No, the SM380V does not require the JL2 transmitter; it provides wireless connectivity up to 350 ft on its own.

Can the built-in micron gauge replace a standalone vacuum meter?
For typical field vacuum work it can, as it provides micron readings integrated into the manifold, though some technicians still prefer comparing to a separate reference for critical jobs.

Is this a direct replacement for older SMAN300 models?
Yes, the SM380V is designed as the replacement for the SMAN300 series, including SMAN320, SMAN340 and SMAN360.