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EHDIS Dual-Port Digital Manometer, ±2.999psi1 / 7
Product guide

EHDIS Dual-Port Digital Manometer, ±2.999psi

EHDIS’s digital manometer is a handheld dual-port pressure meter for single-pipe air pressure or differential measurements across two pipes. Its selectable range and units suit HVAC and gas-system service work, but customer feedback raises mixed concerns about accuracy and display readability.

At a glance

  • Measures single-pipe air pressure or differential pressure between two pipes, according to the listing.
  • Offers 12 selectable pressure units, along with hold, stored-data and max/min functions.
  • The listed operating temperature range is 0 to 50°C (32 to 122°F).
Price
$38.69Save 10%

Reference price: $42.99

Price checked: Nov 13, 2026

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Often bought together

Pros and cons

Pros

  • Dual inputs support differential checks, while the stated single-pipe mode covers basic pressure measurements.
  • A broad selection of 12 pressure units can accommodate different reporting preferences.
  • The listing describes hold, saved readings and max/min recording for capturing measurements.

Cons

  • Three AAA batteries are required and are not included.
  • The listed accuracy is specified at 25°C, so it should not be treated as an unconditional accuracy claim across all operating conditions.

Technical specifications

18 specifications
Identity
BrandEHDIS
Measurement
Selectable pressure range±2.999psi
Accuracy±0.3%FSO (at 25°C)
Repeatability±0.2% (Max ±0.5%FSO)
Linearity/Hysteresis±0.29%FSO
Response time0.5 Seconds
Selectable measurement units12 Selectable Units of Measure (kPa, Psi, Kgfcm2, Ozin2, Bar, mbar, inHg, mmHg, InH2O, FtH2O, cmH2O, Pa)
Functions
Measurement modessingle pipe or differential pressure of two pipes
Data functionsData Hold and Error Code
Maximum and minimum recordingMax / minimum record function
Stored data100 data
Over-range indicatorErr 0
Under-range indicatorErr 1
Power and operating conditions
Battery4.5V(3*1.5V/AAA) NOT included batteries
Operating conditions0 to 50°C (32 to 122°F)
Storage conditions-10 to 60°C (14 to 140°F)
Dimensions and installation
Dimensions listed5.31 x 1.18 x 2.17 inches
Materials and protection
Material listedRubber

What to know before buying

Listing details to confirm

The listing gives an accuracy claim of ±0.3%FSO at 25°C, while customer feedback is mixed on accuracy and pressure readings. Treat the listed figure as a manufacturer claim and consider whether it meets the requirements of the specific service task. Customers also report mixed views of the unit size and readability, and some find the instructions lacking. The listing does not give a display size.

Who is it for?

A good fit for

  • HVAC technicians or maintenance users checking single-line air pressure or differential pressure across two lines.
  • Gas-system service tasks where the stated measurement range, selectable units and supplied fittings are suitable.

Less suited to

  • Users who need batteries included or require confirmed measurement performance beyond the stated range and test conditions.
  • Users who need a clearly established display size or confidence in accuracy based only on customer feedback.
EHDIS Dual-Port Digital Manometer, ±2.999psi · photo 2
Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 1,438 ratings
  • 5 stars72%72%
  • 4 stars14%14%
  • 3 stars8%8%
  • 2 stars1%1%
  • 1 star5%5%

Customer feedback highlights ease of use, functionality and versatility, with some customers saying it works well. Feedback is mixed on accuracy, pressure readings, size and readability, and customers also report that the instructions can be lacking. For HVAC or gas-service checks, those concerns matter when readings need to be trusted or the display must be read quickly. The listing provides a stated accuracy figure at 25°C, but customer impressions do not verify that specification or establish suitability for a particular task.

Positive themes

  • Customers describe it as easy to use and report that it works well.
  • Customers appreciate its versatility across different testing settings.

Negative themes

  • Customers report that the instructions are lacking.

Mixed feedback

  • Customer feedback is mixed on accuracy and pressure readings.
  • Customers disagree about whether the meter is a practical size, and some report difficulty reading the units without magnification.

Frequently asked questions

Can this manometer measure differential pressure?

The listing says its dual inputs measure differential pressure between two pipes, as well as pressure at a single pipe.

What pressure range and accuracy does the listing specify?

It lists a selectable pressure range of ±2.999psi and accuracy of ±0.3%FSO at 25°C. These are manufacturer claims, and customer feedback is mixed on accuracy and pressure readings.

Are batteries included?

No. The listing specifies three 1.5V AAA batteries and says they are not included.

What comes in the package?

The package list names the manometer, an English user manual, a protector bag, a metal connector and two rubber tubes.

EHDIS Dual-Port Digital Manometer, ±2.999psi · photo 3
Additional product photo 3

Alternative options

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