DM109 Automotive Circuit System Tester

AUTOOL DM109 Automotive Circuit System Tester Features Multiple Functions Integrated:The AUTOOL DM109 integrates a multimeter, oscilloscope, relay tester, fuel injector tester, and actuator driver into one device. It supports testing of 9–72V vehicle electrical systems, eliminating the need to switch between multiple devices and enabling comprehensive electrical diagnostics with a single device. Wide Vehicle Compatibility:Supports 9–72V vehicle electrical system testing and is compatible with a full range of 12V/24V/36V/48V/72V vehicles. Comprehensive Circuit Fault Diagnosis:Supports voltage and polarity testing, continuity testing, circuit signal testing, resistance and diode testing, automotive indicator light and wiring tests, open/closed circuit testing, poor ground fault detection, and short circuit troubleshooting and localization. Multimeter Function:Connects to standard multimeter probes, allowing it to function as a digital multimeter for more flexible testing. Supports measurement of voltage, current, resistance, continuity, diode, frequency, and temperature. Component Activation & Test:Provides three activation modes to directly drive various vehicle electrical components, quickly identifying component faults, wiring faults, and control module issues. It reduces unnecessary disassembly and replacement, improving repair efficiency. Smart Range Recognition:Built-in intelligent recognition system eliminates the need for manual range switching. The device automatically identifies voltage and resistance and accurately determines circuit polarity. Dual Safety Protection:Equipped with a dual safety protection system featuring a 20A fuse and intelligent circuit breaker. When a short circuit or overload occurs, the device automatically disconnects the circuit to protect both the testing device and the vehicle, ensuring safer operation and preventing potential risks. Firmware Upgrade:Connect the device to a computer to download and install firmware upgrade packages. The device will be continuously updated and iterated, unlocking more features. Product Details: 2.8-inch Display: Clear image quality, allowing data reading in both strong and dim environments. LED Auxiliary Lighting: No need for an additional handheld flashlight, making circuit inspection in dark areas more convenient.