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AUTOOL DM103 Digital LCR Tweezer for Resistance Capacitance and Inductance
US$40.00
Key Features
- Smart Component Recognition
- Dual-Parameter Display
- Precision SMD Probes
- Smart Component Recognition: Auto mode identifies resistance, capacitance, and inductance without repeated manual mode changes.
- Dual-Parameter Display: Primary and secondary values can be shown together for deeper component evaluation during repairs.
- Precision SMD Probes: Gold-plated fine contacts and stated ±0.5% accuracy support work on small parts and dense circuit boards.
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AUTOOL DM103
Product Overview
The AUTOOL DM103 is a multifunctional portable digital LCR tweezer for SMD component testing, automotive circuit board repair, and electronic troubleshooting. With ±0.5% measurement accuracy, a HD OLED color display, smart component recognition, and support for resistance, capacitance, inductance, diode, and continuity testing, it helps users quickly identify components and evaluate component condition directly on high-density circuit boards.
DM103 supports three test frequencies — 100Hz, 1kHz, and 10kHz — and two effective test levels, 0.3V and 0.6Vrms. During measurement, it can synchronously display primary and secondary parameters, including RS, D, Q, Z, and X values, meeting a wider range of component diagnosis and repair needs than basic multimeters.
±0.5% Accuracy 6 Test Modes HD OLED Type-C Upgrade
100Hz1kHz / 10kHz
0.3V0.6Vrms
400mAhLithium Battery
3 YearsWarranty
Click to enlargeKey Features
Key Features
For automotive circuit board testing, the D value and Q value are important indicators for component health. DM103 helps users go beyond static capacitance or resistance readings and judge component performance more accurately.
D / Q Value Insight
Read D and Q values together with L, C, and R data to judge component condition faster and avoid basic multimeter misreads.
Auto Component Recognition
Smart recognition helps identify resistors, capacitors, and inductors quickly on dense automotive boards and SMD repair jobs.
Tweezer Form Factor
The tweezer-style probes reach tight board spaces and keep the workflow compact without changing tools.
Board-Level Repair
Synchronized primary and secondary values help technicians compare component behavior quickly during ECU board troubleshooting.
Click to enlargeKey Features
Key Features
DM103 combines smart recognition, six test modes, OLED display, rechargeable battery power, fine gold-plated tips, and Type-C software upgrade support in a compact tweezer-style tool.
6 Test Modes
Supports automatic, inductance, capacitance, resistance, diode, and continuity test modes. Auto mode quickly identifies resistance, capacitance, and inductance without manual switching.
Primary + Secondary Parameters
Displays primary values and secondary parameters at the same time, including RS, D, Q, Z, and X values, helping users evaluate both component type and performance condition.
HD OLED Color Display
The self-illuminating HD OLED color screen provides high brightness and clear reading in bright or dim working environments.
400mAh Rechargeable Battery
Built-in 400mAh lithium battery supports up to 12 hours of continuous operation on a full charge, suitable for extended diagnosis and batch testing.
Gold-Plated Fine Tips
Fine gold-plated contact probes improve contact reliability and measurement accuracy when testing small SMD components on high-density circuit boards.
Type-C Software Upgrade
Supports online software upgrades through a Type-C connection to a computer, helping keep the device updated with feature and performance improvements.
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Click to enlargeSpecifications
Specifications
Review the DM103 measurement ranges, parameters, frequencies, display settings, power, size, and operating environment before ordering.
| Measurement | |
| Product | AUTOOL DM103 Digital LCR Tweezer |
| Accuracy | ±0.5% |
| Resistance Range | 10mΩ-10MΩ |
| Capacitance Range | Auto Mode: 50pF-5mF; Capacitance Mode: 1pF-20mF |
| Inductance Range | Auto Mode: 5μH-60H; Inductance Mode: 1μH-60H |
| Supported Parameters | L, C, R, D, Q, Rs, RS, Z, X |
| Frequency | 100Hz, 1kHz, 10kHz |
| Test Level | 0.3V, 0.6V / 0.6Vrms |
| Test Speed | 1 time / second |
| Test Modes | Automatic, inductance, capacitance, resistance, diode, and continuity |
| Display And Settings | |
| Display | HD OLED color display |
| Language Selection | Chinese / English |
| Volume Setting | 0%-100% |
| Backlight Brightness | 10%-100% |
| Auto Power Off | Off / 5min-120min |
| Power And Build | |
| Battery Capacity | 3.7V, 400mAh lithium battery |
| Continuous Operation | Up to 12 hours on a full charge |
| Charging / Upgrade | Type-C charging and Type-C software upgrade |
| Material | ABS |
| Dimensions | 145mm x 30mm / 5.7in x 1.2in |
| Environment | |
| Operating Environment | Up to 40°C, humidity <75% |
| Storage Environment | -20°C to 60°C, humidity <80% |
| Warranty | 3-year warranty for eligible non-human damage cases |
Measurement
ProductAUTOOL DM103 Digital LCR Tweezer
Accuracy±0.5%
Resistance Range10mΩ-10MΩ
Capacitance RangeAuto Mode: 50pF-5mF; Capacitance Mode: 1pF-20mF
Inductance RangeAuto Mode: 5μH-60H; Inductance Mode: 1μH-60H
Supported ParametersL, C, R, D, Q, Rs, RS, Z, X
Frequency100Hz, 1kHz, 10kHz
Test Level0.3V, 0.6V / 0.6Vrms
Test Speed1 time / second
Test ModesAutomatic, inductance, capacitance, resistance, diode, and continuity
Display And Settings
DisplayHD OLED color display
Language SelectionChinese / English
Volume Setting0%-100%
Backlight Brightness10%-100%
Auto Power OffOff / 5min-120min
Power And Build
Battery Capacity3.7V, 400mAh lithium battery
Continuous OperationUp to 12 hours on a full charge
Charging / UpgradeType-C charging and Type-C software upgrade
MaterialABS
Dimensions145mm x 30mm / 5.7in x 1.2in
Environment
Operating EnvironmentUp to 40°C, humidity <75%
Storage Environment-20°C to 60°C, humidity <80%
Warranty3-year warranty for eligible non-human damage cases
How To Use
How To Use
DM103 uses a compact three-button layout with Type-C charging / upgrade interface, OLED display, charging indicator, and precision tweezer tips.
Power / Mode
Press to power on. Long press to power off. In measurement mode, switch among AUTO, L, C, R, diode, and continuity.
Frequency / Menu
Use this key to switch frequency in measurement mode. Long press to enter or exit settings, then move downward.
Hold / Level
Hold the current reading in measurement mode. Long press to switch key sound, and move upward inside settings.
Type-C / OLED / Tips
Charge or upgrade through Type-C, read results on the OLED screen, and touch SMD parts with the gold-plated tips.
Before You Order And Use
Before You Order And Use
DM103 is designed for passive component and circuit-board component testing. It is not designed for live-circuit measurement.
Safety And Measurement Notes
- Do not apply voltage during measurement.
- DM103 is not designed for measuring live circuits.
- Always disconnect power before testing circuit-board components.
- Fully discharge all capacitors before measurement.
- Always discharge capacitors before measurement to prevent device damage and improve reading accuracy.
- Avoid high temperatures, dust, and direct sunlight during use or storage.
- Do not use in humid environments.
- Do not use near flammable gases or vapors to prevent safety hazards.
Manual And Downloads
Manual And Downloads
Download the AUTOOL DM103 manual for measurement modes, button operation, settings, charging, software upgrade, and safety instructions.
Click to enlargeAUTOOL DM103 User Manual
Open the PDF manual for detailed DM103 operation, setting, charging, upgrade, and safety guidance.
Download ManualNeed Setup Confirmation?
Contact AUTOOL Store before ordering if you need help confirming measurement range, D/Q value use, Type-C upgrade support, SMD testing suitability, or safety precautions.
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Click to enlargeWhat Is In The Box
What Is In The Box
The packing list image shows the main DM103 tweezer, protective storage case, Type-C cable, and user manual. Packing List uses only the most relevant complete package image.
Main UnitAUTOOL DM103 Digital LCR Tweezer
StorageProtective storage case
CableType-C cable
DocumentationUser manual
Related Guides
Related Guides
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Questions And Answers
These answers cover live-circuit safety, capacitor discharge, D value, supported test components, test frequency, battery life, software upgrade, and warranty support.
No. DM103 is not designed for measuring live circuits. Always disconnect power and fully discharge capacitors before testing to prevent device damage and ensure accurate readings.
D value helps evaluate capacitor loss. A lower D value indicates lower loss and better component condition, while a higher D value may indicate aging, damage, or poor component quality.
DM103 can test resistance, capacitance, inductance, diode, and continuity. It also supports automatic component recognition for resistance, capacitance, and inductance testing.
DM103 supports three testing frequencies: 100Hz, 1kHz, and 10kHz.
The built-in 400mAh lithium battery supports up to 12 hours of continuous operation on a full charge.
Yes. DM103 supports software upgrades through a Type-C connection to a computer, helping keep the device updated with the latest features and improvements.
AUTOOL provides 3-year warranty support for eligible non-human damage cases. Contact AUTOOL Store support for warranty, manual, software upgrade, or measurement questions.
Warranty And Contact
Warranty And Contact
For product support, manual requests, measurement range confirmation, D/Q parameter questions, Type-C upgrade support, SMD testing suitability, safety precautions, or warranty questions, contact AUTOOL Store directly.
Pre-Sales And Product Support
Use support if you need help confirming whether DM103 fits your circuit-board repair workflow, how to interpret D/Q values, how to safely discharge capacitors before testing, how to perform Type-C software upgrade, or what is included in the package.
- 3-year warranty for eligible non-human damage cases
- Manual request and setup confirmation
- Support for measurement range, D value, Q value, RS / Z / X secondary parameters, and smart component recognition
- Type-C charging and software upgrade support
- Safety guidance for capacitor discharge and non-live circuit measurement
Customer Reviews
Leave A Review
Nicole-zhang –
Troubleshooting tiny electronics and getting precise meter readings is often tedious. The AUTOOL DM103 Digital LCR Tweezer Smart Meter solves this hassle. Unlike standard multimeters that force you to juggle loose probes and watch the screen at the same time, this tool is simple to use: power it up, then touch its tweezer probes to your component’s wires to take measurements instantly.