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AUTOOL LM100 Smart Digital Vaccum Gauge
US$120.00
Key Features
- High Vacuum Accuracy
- LM130 Data Sync
- Seven Unit Switch
- High Vacuum Accuracy: High-precision sensing delivers up to plus or minus 0.2 percent accuracy with fine 0.1 mbar resolution.
- LM130 Data Sync: The communication interface lets it connect with the LM130 for synchronized data transfer.
- Seven Unit Switch: One-button switching between seven measurement units makes it easier to match different service habits.
- 3-Year Warranty Main unit 3 years · Accessories 1 year
- 90-Day Returns Eligible returns within 90 days
- Official Store Genuine products · Direct support
AUTOOL LM100
Product Overview
AUTOOL LM100 Intelligent Digital Vacuum Gauge is a powerful digital vacuum gauge for refrigeration, HVAC, and automotive A/C service. Built with high-strength engineering plastics, soft non-slip silicone, a brass valve body, and a foldable hook, it combines rugged durability with comfortable handheld operation. Equipped with a high-precision sensor, it delivers measurement accuracy up to ±0.2% and resolution as fine as 0.1 mbar. The 2.8-inch backlit display, evacuation mode, pressure retention test mode, one-button 7-unit switching, automatic sleep function, and LM130 data transmission support make it a compact and practical tool for vacuum monitoring and refrigeration system sealing checks.
±0.2% Accuracy 0.1 mbar Resolution Evacuation Mode LM130 Data Transfer
2.8-inchBacklit Display
7 UnitsOne-Button Switch
20 minAuto Sleep
3 YearsWarranty
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Click to enlargeKey Features
Key Features
LM100 focuses on accurate vacuum measurement, refrigeration system sealing checks, LM130 synchronized data transfer, and portable field operation.
Accurate Data Measurement
Equipped with a high-precision sensor, LM100 offers measurement accuracy up to ±0.2% and vacuum resolution up to 0.1 mbar.
Data Transmission With LM130
The integrated microprocessor and communication interface enable synchronized data transfer when connected with the AUTOOL LM130.
Pressure Retention Test
Pressure retention test mode helps detect the sealing condition of refrigeration systems and supports small-leak inspection.
Portable Durable Build
High-strength engineering plastics, soft anti-slip silicone, brass valve body, and foldable hook support rugged daily service use.
Key Features
Key Features
LM100 combines high-precision measurement, evacuation monitoring, leak testing, backlit display, unit switching, and practical structure design for refrigeration and A/C service work.
High-Precision Sensor
Measurement accuracy up to ±0.2%, vacuum resolution up to 0.1 hPa / 0.1 mbar / 0.1 Torr / 0.01 inHg, and temperature accuracy up to ±0.5°C / ±0.9°F / ±0.5K.
Evacuation Mode
Quickly monitors air and moisture removal during refrigeration system evacuation and displays vacuum level changes in real time.
Pressure Leak Test Mode
Pressure retention test mode helps accurately inspect refrigeration system sealing condition and identify small pressure changes.
LM130 Data Transmission
Connects with LM130 through the integrated communication interface for high-precision synchronized data transmission.
2.8-Inch Backlit Display
The high-definition backlit display is suitable for dim and bright environments, with 0.5-second response time for quick reading.
User-Friendly Structure
Foldable hook, multi-button layout, silicone side grip, brass connector, and automatic power-off after 20 minutes of inactivity improve field usability.
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Click to enlargeSpecifications
Specifications And Pressure Safety Limits
Confirm vacuum range, unit support, temperature range, pressure limits, hose pressure rating, display, and operating environment before testing.
| Measurement | |
| Vacuum Units | hPa, mbar, Torr, inHg |
| Temperature Units | °C, °F, K |
| Vacuum Range | 0-2000 mbar / 0-1500 Torr |
| Absolute Pressure Display | 0-2000 mbar |
| Vacuum Resolution | 0.1 hPa / 0.1 mbar / 0.1 Torr / 0.01 inHg |
| Vacuum Accuracy | Within ±0.2% of full range |
| Temperature Range | -55-125°C / -67-257°F / 218-398K |
| Temperature Resolution | 0.1°C / 0.1°F / 1K |
| Temperature Accuracy | ±0.5°C / ±0.9°F / ±0.5K |
| Device | |
| Display | 2.8-inch backlit display |
| Response Time | 0.5 seconds |
| Operating Temperature | -10-60°C |
| Operating Voltage | 6V, 4 × 1.5V batteries |
| Auto Sleep | Automatically powers off after 20 minutes of inactivity |
| Body | High-strength engineering plastics and soft anti-slip silicone |
| Connector | Brass valve body / refilling tube brass connector |
| Hook | Foldable hook design |
| Pressure Safety | |
| Gauge Pressure Range | -101 kPa to 6 MPa / -0.1 bar to 60 bar |
| Absolute Limit | 10 MPa / 100 bar |
| Standard Hose Max Working Pressure | 600 PSI / about 4.13 MPa / 41.3 bar |
| Standard Hose Limit | 3000 PSI / about 20.68 MPa / 206.8 bar |
Measurement
Vacuum UnitshPa, mbar, Torr, inHg
Temperature Units°C, °F, K
Vacuum Range0-2000 mbar / 0-1500 Torr
Vacuum Resolution0.1 hPa / 0.1 mbar / 0.1 Torr / 0.01 inHg
Vacuum AccuracyWithin ±0.2% of full range
Temperature Range-55-125°C / -67-257°F / 218-398K
Temperature Accuracy±0.5°C / ±0.9°F / ±0.5K
Device
Display2.8-inch backlit display
Response Time0.5 seconds
Operating Temperature-10-60°C
Operating Voltage6V, 4 × 1.5V batteries
Auto SleepAutomatically powers off after 20 minutes of inactivity
BodyHigh-strength engineering plastics and soft anti-slip silicone
HookFoldable hook design
Pressure Safety
Gauge Pressure Range-101 kPa to 6 MPa / -0.1 bar to 60 bar
Absolute Limit10 MPa / 100 bar
Standard Hose Max Working Pressure600 PSI / about 4.13 MPa / 41.3 bar
Standard Hose Limit3000 PSI / about 20.68 MPa / 206.8 bar
Product Comparison
Product Comparison
LM100 is positioned as a smart digital vacuum gauge for vacuum monitoring and pressure leak testing. Compare it with AUTOOL LM120, LM120+, LM130, LM150, and LM160 before choosing a complete A/C gauge or refrigerant tool.
LM100 FocusVacuuming mode, pressure leak test, foldable hook, vacuum units, temperature units, and LM130 data transmission support
Compared With LM120 / LM150 / LM160LM120, LM150, and LM160 focus more on refrigerant mode, high / low pressure valve use, refrigerant database, and manifold testing
Compared With LM130LM100 can connect with LM130 for synchronized data transmission, while LM130 itself is a separate digital manifold gauge tool
Decision CheckChoose LM100 for vacuum monitoring and pressure retention leak tests; compare LM120 / LM150 / LM160 if refrigerant filling, manifold functions, or refrigerant database support is required
Click to enlargeManual And Downloads
Manual And Downloads
Download the AUTOOL LM100 user manual for setup, unit switching, evacuation mode, pressure leak test mode, safety limits, and maintenance guidance.
Click to enlargeAUTOOL LM100 User Manual
Open the PDF manual for LM100 operation, safety limits, pressure leak test mode, evacuation mode, and unit settings.
Download ManualNeed Setup Confirmation?
Contact AUTOOL Store if you need to confirm pressure range, hose compatibility, LM130 data transmission, unit switching, or refrigeration system leak test setup before use.
Related Products
Related Products
Compare related AUTOOL digital manifold gauges and refrigerant tools before choosing the right gauge type, refrigerant function, and testing workflow.
- Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL LM100 Smart Digital Vaccum Gauge
From US$120.00 - Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL LM130 Smart Digital Manifold Kit
From US$135.00 - Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL LM160 Refrigerant Leak Detector Digital Manifold Gauges
From US$209.00 - Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
From US$159.00 - Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL LM120+ Digital Refrigerant Gauges Hvac Gauges
From US$149.00
Related Guides
Related Guides
Use these related articles to understand refrigerant service context, manifold-gauge decisions, and A/C workflow before using LM100.
How to Choose a Smart Digital Manifold
Compare digital manifold models by refrigerant support, vacuum mode, and pressure retention testing before choosing a tool.
AUTOOL Refrigeration Digital Gauges Compared
Compare digital refrigeration gauges by display, connectivity, and measurement workflow before buying for A/C service work.
How to Choose a Vacuum Pressure Gauge
Review vacuum pressure gauge options to understand how pressure, vacuum, and unit reading habits affect your tool choice.
How do you choose a vacuum gauge? It’s simple!
Read the vacuum gauge basics before choosing a refrigerant service workflow, pressure unit, and testing mode.
Click to enlargeWhat Is In The Box
What Is In The Box
Review the package image to confirm the LM100 main unit, product box, user manual, and included accessories before ordering. Packing List uses the most relevant single package image only.
Main UnitAUTOOL LM100 Smart Digital Vacuum Gauge
ManualUser manual shown in the package image
Connection CableData / connection cable shown in the package image
ConnectorBrass valve connector shown in the package image
Short HoseYellow short hose shown in the package image
PackagingProduct box shown in the package image
Before You Order And Use
Before You Order And Use
LM100 has defined pressure limits, hose pressure limits, environmental restrictions, and safety requirements. Confirm the rated pressure of the system before testing.
Safety And Use Notes
- LM100 measures gauge pressure with a range of -101 kPa to 6 MPa / -0.1 bar to 60 bar.
- The absolute pressure limit is 10 MPa / 100 bar.
- The standard hose maximum working pressure is 600 PSI / about 4.13 MPa / 41.3 bar.
- The standard hose limit is 3000 PSI / about 20.68 MPa / 206.8 bar.
- Before testing, confirm the rated pressure of the equipment being tested.
- Do not use the LM100 if the test pressure exceeds its rated range.
- For DY517A, if the charging hose does not meet pressure requirements, use a suitable replacement hose for testing.
- Do not use or store this refrigerant leak detector in high temperature, high humidity, flammable, explosive, or strong electromagnetic environments.
- Do not modify the internal circuitry of the LM100 to avoid damage or potential hazards.
- Wear proper protective equipment during testing.
- Use the instrument in a well-ventilated environment to avoid inhaling toxic gases.
Questions And Answers
These answers cover LM100 use, refrigerant mode limitations, LM130 connection, unit switching, vacuum range, pressure limits, auto sleep, and package contents.
LM100 is used for refrigeration, HVAC, and automotive A/C system vacuum monitoring and pressure leak testing. It helps users observe vacuum level changes and evaluate refrigeration system sealing condition.
No. LM100 is mainly a smart digital vacuum gauge and pressure leak test tool. It is not a complete refrigerant manifold gauge. If refrigerant mode, refrigerant database, or high / low pressure manifold valve functions are required, compare LM120, LM150, or LM160 instead.
Yes. LM100 has an integrated microprocessor and communication interface that can connect to LM130 for synchronized high-precision data transmission.
LM100 supports one-button switching between hPa, mbar, Torr, inHg, °C, °F, and K.
The vacuum range is 0-2000 mbar / 0-1500 Torr. Vacuum resolution is 0.1 hPa, 0.1 mbar, 0.1 Torr, or 0.01 inHg depending on the selected unit.
Confirm that the tested equipment does not exceed the LM100 and hose rated pressure range. LM100 measures gauge pressure from -101 kPa to 6 MPa / -0.1 bar to 60 bar, and the absolute limit is 10 MPa / 100 bar. The standard hose maximum working pressure is 600 PSI / about 4.13 MPa / 41.3 bar.
Yes. LM100 automatically powers off after 20 minutes of inactivity to save energy.
Please refer to the Packing List image. The package image shows the LM100 main unit, product box, user manual, data / connection cable, brass valve connector, yellow short hose, and related accessories shown in the package image.
Warranty And Contact
Warranty And Contact
For LM100 support, manual requests, pressure range confirmation, LM130 data transmission setup, hose / connector pressure compatibility, refrigeration system leak test guidance, or warranty questions, contact AUTOOL Store directly.
Pre-Sales And Product Support
Use support if you need help confirming whether LM100 is suitable for your refrigeration, HVAC, or automotive A/C vacuum test task; checking rated pressure; selecting a suitable hose; or understanding the difference between LM100 and AUTOOL digital manifold gauges.
- 3-year warranty for eligible non-human damage cases
- Lifetime maintenance support
- Manual and setup support
- Pressure range and hose compatibility confirmation
- LM130 data transmission support
- Refrigeration system leak test guidance
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