語言和貨幣
AUTOOL DM303 Automotive Diagnostic Multimeter
US$190.00
主要特色
- True RMS DMM + Oscilloscope
- Cranking, Ignition + Vehicle Signals
- Injector + Relay Testing
- 5 V / 12 V Signals + K/CAN View
- True RMS DMM + Oscilloscope: Combine True RMS auto-ranging electrical measurements with oscilloscope waveform observation.
- Cranking, Ignition + Vehicle Signals: Check cranking behavior, ignition pulses, and dedicated vehicle signals from one handheld unit.
- Injector + Relay Testing: Use the supported drive and observation modes for electromagnetic injectors, excluding 120 V injectors, plus compatible relays.
- 5 V / 12 V Signals + K/CAN View: Generate 5 V square, 5 Vpp sine, or 12 V square signals and observe K/CAN line data in the dedicated modes.
- 2.8-Inch Multi-Language Screen: Read menus on the brightness-adjustable color screen and carry the tester with its leads in the toolbox.
- 3 年保用期 主機保固 3 年，配件保固 1 年
- 90日返回 符合條件的退貨可在 90 天內進行
- 官方店鋪 正品 · 直接支持
AUTOOL DM303 · Automotive Multimeter and Oscilloscope
Bring Vehicle-Focused Electrical Tests Together
Bring vehicle-focused electrical measurements, waveform observation, and selected component tests into one handheld kit. DM303 supports cranking and ignition checks, compatible injector and relay tests, signal output, and K/CAN line viewing in dedicated modes for broader vehicle-circuit work across workshop and mobile service tasks.
- DMM + Automotive Scope
- Cranking + Ignition Modes
- Injector + Relay Test Modes
- 5 V / 12 V Signal Outputs
- K / CAN Line Observation
主要特色
Meter, Scope and Automotive Signal Tools
True RMS Auto-Ranging Multimeter
Measures DC / AC voltage, current, resistance, diode, and frequency. Auto range helps reduce manual range selection, while True RMS improves reading reliability for electrical testing.
示波器模式
The product page lists 500 kHz analog bandwidth, while the current model PDF lists 200 kHz. Confirm the delivered hardware, firmware and manual version before choosing DM303 for a bandwidth-dependent task; neither figure is the sampling rate.
Automotive Circuit Test
Supports automotive circuit voltage and drive-current checks. It can help check battery voltage, vehicle circuits, ECU-related wiring, and other electrical parts through the proper test leads.
Injector And Relay Test
DM303 lists drive and observation modes for supported electromagnetic injectors, excluding 120 V injectors, plus relay testing. Confirm component type, pinout, supply, current and permitted output mode; never drive an ECU output, SRS, data line or unknown module.
Analog Signal And K/CAN Line Data
The listed outputs are 5 V square, 5 Vpp sine and 12 V square. Use them only on a documented permitted load and pin after confirming source impedance/current limits for the delivered version; do not inject into powered data lines, ECU outputs, SRS or unknown modules. K/CAN observation is not a full vehicle scan.
Dedicated Automotive Test Modes
DM303 adds injector, relay, cranking, signal simulation, and K/CAN line checks to multimeter and oscilloscope functions. Injector testing does not support 120V injectors.
Color Screen, Multiple Languages
The brightness-adjustable 2.8-inch color screen presents test menus in multiple supported languages, including English, French, Spanish, German, and Chinese.
Portable Electrical Test Kit
The toolbox stores DM303 and its test leads together for transport and organized storage.
Flexible Battery Setup
Use compatible dry batteries or an optional compatible lithium battery, purchased separately. Only the rechargeable lithium battery option may be charged through the device.
Handheld Controls And Connections
DM303 brings its display, navigation keys, and separate measurement inputs into one handheld unit with a rear stand.
3年保固支持
主機：三年保固。標準配件：一年保固。保固政策。
服務工作流程
Select the Vehicle Test and Verify Connections
步驟進展1 / 6
01
定義測量
使用接線圖確定預期訊號、參考點和安全測量模式。
02
檢查線索和評級
連接前，請確認所選任務所需的儀器、端子、保險絲、導線和探針的額定值。
03
選擇模式
選擇支援的電壓、電流、電阻、通斷性、頻率或其他特定型號的功能，並從安全範圍開始。
04
Qualify Active Output
Before injector, relay or signal output, confirm component type, pinout, supply, permitted mode, current and source-impedance limits. Keep output off ECU outputs, SRS circuits, powered data lines and unknown modules.
05
探測電路
連接到正確的參考點和測試點，不要橋接端子；僅在適當情況下使用反向探測附件。
06
Record and Verify
Save or note the value and operating state, then compare it with the vehicle specification and a second check before assigning a root cause.
安全使用
Control Output, Bus and Input Connections
Limit Active Output
Injector drive and 5 V square, 5 Vpp sine or 12 V square outputs require a documented permitted pin and load. Output amplitude alone does not define safe current, impedance or duty for an unknown circuit.
乾電池選項
You can install 4pcs 1.5V dry batteries for normal use. Do not charge dry batteries through the device.
Charge Only Lithium Setup
If a compatible rechargeable lithium battery is installed, it can be charged. Dry batteries must not be charged.
不含電池
DM303 / DM301 is shipped without batteries due to shipping and battery restrictions. Batteries need to be purchased separately.
鋰電池選項
You may install a compatible lithium battery by yourself. The reference image shows a 503450 3.7V 1000mAh lithium battery style.
結合上下文解讀結果
Keep measurement, waveform, protocol observation and active output as separate modes. A meter fuse or input rating does not authorize power or signal injection into an ECU, SRS circuit, sensor or data line.
結果指南
Read the Result Before Deciding the Next Step
啟動測試
During vehicle starting, a minimum battery voltage above 9.6V is generally considered normal. If the value drops below 9.6V, the battery may be aging or weak.
模型比較
選擇合適的電氣測試工具
模型指南
選擇一個或多個型號。預設選擇DM303。
已選擇 1 個模型
未選擇任何型號。請選擇一個型號進行比較。
| 產品描述* | DM301 | DM303 | DM208 |
|---|---|---|---|
| 測量與讀數 | |||
| 顯示屏 | 2.8吋彩屏 | 2.8吋彩屏 | 2.4英寸，320×240 |
| 語言 | 13類型 | 13類型 | 沒有說明 |
| 電壓測量範圍 | 交流電：0-700V；直流電：0-1000V | 交流電：0-700V；直流電：0-1000V | 沒有說明 |
| 電流測量範圍 | 0–20 A（最大 20 A；持續 10 A）；0–200 mA | 0–20 A（最大 20 A；持續 10 A）；0–200 mA | 沒有說明 |
| 電阻測量範圍 | 0-1MΩ | 0-1MΩ | 沒有說明 |
| 頻率測量範圍 | 0-1MHz | 0-1MHz | 沒有說明 |
| 資料鎖定/清除 | ✓ | ✓ | 沒有說明 |
| 汽車功能與適配 | |||
| 基本功能 | 6類型 | 12類型 | 沒有說明 |
| 汽車電路驅動電流 | × | 最大輸出電流：5A；最大輸入電流：5A | 沒有說明 |
| 燃油噴射器驅動訊號輸出 | × | X | 沒有說明 |
| 檢測方式 | 電壓測量、電流測量、電阻測量、頻率測量、示波器模式、點火脈衝訊號測試 | 電流測量 電阻測量 頻率測量 示波器模式 燃油噴射器測試 繼電器測試 汽車電路測試 汽車啟動測試 訊號模擬測試 CAN匯流排資料讀取 點火脈衝訊號測試 K/LIN匯流排資料讀取 | 沒有說明 |
| 適用車型 | 卡車、轎車、巴士、電動車及其他車輛類型 | 卡車、轎車、巴士、電動車及其他車輛類型 | 沒有說明 |
| 動力與設備 | |||
| 供電方式 | 乾電池 TYPE-C [可選] 鋰電池 | 乾電池 TYPE-C 12V 可充電電池 [選購] 鋰電池 | 內置2000 mAh鋰電池 |
| 配件 | 2 種測試線 | 6 種測試線 | 沒有說明 |
| 手電筒功能 | ✓ | ✓ | 沒有說明 |
| 配備工具箱 | ✓ | ✓ | 沒有說明 |
| 產品詳情 | |||
| 紅外線分辨率 | 沒有說明 | 沒有說明 | 32×32 |
| 幀速率 | 沒有說明 | 沒有說明 | 7 幀/秒 |
| 溫度範圍 | 沒有說明 | 沒有說明 | -20°C到550°C |
| 熱精度 | 沒有說明 | 沒有說明 | ±2°C 或 2%（製造商規格） |
| 發射率 | 沒有說明 | 沒有說明 | 0.10 至 1.00 可調 |
手冊和支持
查找手冊和測量指南
AUTOOL DM303 使用手冊
開啟PDF手冊 AUTOOL DM303 multimeter and oscilloscope modes, cranking and ignition checks, injector and relay tests, signal output, safety and troubleshooting support.
包裝內容
看看盒子裡裝了什麼
- 主機AUTOOL DM303 汽車診斷萬用電錶
- 儲存Portable protective toolbox and retail box
- 文档用戶手冊
- 測試線Multifunction test lead, battery clip cable, multimeter probes, jumper / adapter cables, and additional test leads
- 電池Notice Batteries are not included. Use 4pcs 1.5V dry batteries or a compatible lithium battery setup according to the battery rules.
買家問題
電氣連接和測量問題
是否 AUTOOL DM303 包含電池嗎？
No. DM303 / DM301 is shipped without batteries. You need to buy batteries separately. You can use 4pcs 1.5V dry batteries, or install a compatible lithium battery setup by yourself.
Can I Charge Dry Batteries Inside DM303?
No. Do not charge dry batteries. Only a compatible rechargeable lithium battery setup can be charged. If you are not sure whether your battery is rechargeable or compatible, contact AUTOOL Store before charging.
What Lithium Battery Style Is Shown For DM303?
The reference image shows a 503450 3.7V 1000mAh lithium battery style. Confirm the connector, size, and compatibility before installing a lithium battery.
DM301 和 DM303 有什麼不同？
DM301 focuses on basic measurement functions such as voltage, current, resistance, frequency, oscilloscope, and ignition pulse signal testing. DM303 adds more automotive diagnostic functions, including fuel injector testing, relay testing, automotive circuit testing, cranking test, signal simulation, CAN line data reading, and K/LIN-related line data reading.
Does DM303 Support Injector Testing?
Yes. DM303 can drive supported electromagnetic injectors, including supported GDI injectors, and can detect real-time injector signals; it does not support 120V injectors. Confirm injector type, pinout, supply, current, and the vehicle procedure before output. A drive response does not by itself prove spray pattern, flow, or root cause, and active output must stay off ECU outputs, SRS circuits, powered data lines, and unknown modules.
What Does The Cranking Test Result Mean?
During vehicle startup, DM303 records the minimum battery voltage and uses 9.6V as a general reference. A lower reading can indicate a weak or aging battery or a starting-system issue that needs further inspection. Apply the battery maker or vehicle procedure for the battery type, temperature, and state of charge.
What Measurement Ranges Does DM303 Support?
The page lists DC 0–1000V and AC 0–700V voltage, 0–20A and 0–200mA current, 0–1MΩ resistance and 1Hz–1MHz frequency ranges. The manual distinguishes 20A maximum from 10A continuous current. These values remain subject to the selected terminal, mode, probe and CAT conditions.
Can DM303 Replace A Full Vehicle Diagnostic Scanner?
No. DM303 is an automotive diagnostic multimeter and circuit / signal testing tool. K/CAN line data reading helps with circuit-level diagnosis, but it should not be described as a complete vehicle diagnostic scanner.
包含哪些配件？
Package contents: DM303 main unit, user manual, retail box, portable toolbox, multifunction test lead, battery clip cable, multimeter probes, jumper / adapter cables, and additional test leads. Batteries are not included.
Which Languages Does DM303 Support?
DM303 supports a multi-language interface, including English, French, Portuguese, Polish, Spanish, Japanese, Russian, Italian, German, Dutch, Korean, Chinese, and other supported firmware options. If a specific language is required, confirm before ordering.
保固期有多長？
主機：三年保固。標準配件：一年保固。保固政策。
客戶評價
留言
海*飽飽 ✓ 已驗證購買 -
I’ve been using the DM303 multimeter and it’s been a great help.
I’ve been using the DM303 multimeter and it’s been a great help. The 2.8-inch color screen is clear and easy to read in different working conditions. The oscilloscope works well for checking automotive signals, and the auto range and true RMS make measurements accurate. It comes with plenty of test cables, supports multiple languages, and the plastic toolbox keeps everything organized and protected. Very reliable for auto repair work.
諾亞 ✓ 已驗證購買 -
Reliable relay testing, machine trigger testing, and efficient injector…
Reliable relay testing, machine trigger testing, and efficient injector operation Precise automotive circuit analysis and analog signal analysis Wide-range and efficient performance Convenient and easy operation High-quality materials Reliable K/CAN test system
路加福音 ✓ 已驗證購買 -
I've been using it for a month and it hasn't let me down, it's been wonderful…
I’ve been using it for a month and it hasn’t let me down, it’s been wonderful, and today it was very helpful in detecting a problem. I highly recommend it.