AUTOOL LM100 Smart Digital Vaccum Gauge
$120.00
• High-precision sensor: Precise measurement! Measurement accuracy up to ±0.2%, resolution up to 0.1 mbar.
• Pressure retention test mode: Even tiny leaks can be detected! Accurately tests the sealing condition of the refrigeration system.
• Data transmission: Data is transmitted and received immediately! Integrated microprocessor and communication interface, can be connected to LM130 for data transmission
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AUTOOL LM100 Intelligent Digital Vacuum Gauge is made of high-strength engineering plastics and soft, non-slip silicone for rugged durability and a comfortable grip. Equipped with a high-precision sensor, it delivers measurement accuracy up to ±0.2% and resolution as fine as 0.1 mbar. This refrigerant leak detector has a 2.8-inch backlit display. It has an integrated microprocessor and communication interface to connect to the LM130 for synchronized data transfer. As a digital vacuum gauge hvac, it supports one-button switching among 7 measurement units. The foldable hook design, brass valve body, and automatic sleep function not only ensure lightweight convenience during use but also provide excellent resistance to electricity and wear. It is a powerful vacuum gauge.
- LM100 Vaccum Gauge measures gauge pressure with a range of -101 kPa to 6 MPa (-0.1 bar to 60 bar), and an absolute limit of 10 MPa (100 bar). The standard hose’s maximum working pressure is 600 PSI (approximately 4.13 MPa, 41.3 bar), with a limit of 3000 PSI (approximately 20.68 MPa, 206.8 bar).
- Before testing, please confirm the rated pressure of the equipment to be tested. Do not use the LM100 Vaccum Gauge if the pressure exceeds its rated range. Additionally, for the DY517A, if the charging hose does not meet the pressure requirements, a suitable replacement hose may be used for testing.
- Please do not use or store this refrigerant leak detector in environments with high temperature, high humidity, flammable or explosive conditions, or strong electromagnetic fields.
- Don’t modify the internal circuitry of the LM100 Vaccum Gauge to avoid damage or potential hazards.
- Wear appropriate protective equipment during testing to ensure user safety.
- Use the instrument in a well-ventilated environment to avoid inhaling toxic gases.
- Accurate Data Measurement: Equipped with a high-precision sensor, measurement accuracy up to ±0.2%, resolution up to 0.1 mbar.
- Data Transmission: Integrated microprocessor and communication interface enable data transfer connection with the LM130.
- Ensures Refrigeration System Sealing: Pressure retention test mode accurately detects the sealing condition of the refrigeration system.
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AUTOOL LM100 Smart Digital Vaccum Gauge Features:
- High-Precision Sensor: Utilizes advanced sensor technology with measurement accuracy up to ±0.2% and resolution up to 0.1 mbar.
Vacuum resolution: 0.1 hPa, 0.1 mbar, 0.1 Torr, 0.01 inHg
Temperature resolution: 0.1℉, 0.1℃, 1K - 2.8-Inch Display Screen: High-definition backlit display suitable for both dim and bright environments. With a 0.5-second response time, it allows users to observe data more intuitively, clearly, and quickly.
- Data Transmission: Integrated microprocessor and communication interface enable connection with the LM130 for high-precision data transmission.
- Vacuum Mode: Quickly removes air and moisture while monitoring vacuum level changes in real time, allowing accurate assessment of the current vacuum state of the refrigeration system.
(Vacuum range: 0–2000 mbar, 0–1500 Torr) - Pressure Retention Test Mode: Even if the device detects the smallest leak., enabling precise inspection of the refrigeration system’s sealing condition.
- Multiple Unit Switching: One-button switching between hPa, mbar, Torr, inHg, ℃, ℉, and K.
- Automatically powers off after 20 minutes of inactivity to save energy.
- Three-Year Warranty, Lifetime Maintenance: For damage caused by non-human factors, AUTOOL promises to resend parts for free within 3 years. If you have any problems, please contact us, and we will respond within 24 hours!
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1 review for AUTOOL LM100 Smart Digital Vaccum Gauge
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AUTOOL LM100 Smart Digital Vaccum Gauge

















The build quality on this smart digital vaccum gauge feels solid. The large digital screen is easy to read and navigation is also very intuitive. The readings seem accurate as far as I can tell. I also like the portability — it’s almost pocket sized