Enhance your electrical system diagnostics with the 9in1 Multifunction Tester, a versatile and compact measurement device designed to deliver comprehensive monitoring in one unit. This multifunctional tester accurately measures voltage, current, power, impedance, capacity, energy, temperature, runtime, and battery level, making it an essential tool for professionals and hobbyists working with various electrical components and systems. Key Features: · **9in1 Multifunctional Measurement:** Combines nine critical parameters—voltage, current, power, impedance, capacity, energy, temperature, runtime, and battery level—into a single, easy-to-use device for thorough system analysis. · **Precise Data Calibration & Customization:** Supports fine-tuning of voltage and current displays and allows programmable full and low battery voltage thresholds, ensuring measurements are tailored to your specific system needs with optimal accuracy. · **Efficient Data Management & Maintenance:** Features accumulated data reset, no-load forced zeroing, and factory settings restoration to simplify routine maintenance and troubleshooting, guaranteeing reliable and consistent measurement performance over time. · **Strong Compatibility:** Designed to fit the installation aperture and terminal configuration of low-voltage dual display voltage and current meters, enabling direct replacement and seamless upgrades with models featuring similar dimensions and terminal layouts. · **Energy-Efficient & Lightweight Design:** Comes with wires and an NTC temperature sensor, combining low power consumption with a compact, lightweight form factor ideal for installations with limited space and portable applications. Technical Specifications: · Material: Durable plastics · Available Versions: 10A, 50A, 100A (optional) · Working Voltage: 4-30V DC · Voltage Measurement Range: 0-100V DC (±1.00V error, 0.1V increment) · Current Measurement Range & Accuracy:  - 10A Version: 0.00-10.00A (±0.1A error, 0.03A increment)  - 50A Version: 0.00-50.00A (±0.5A error, 0.03A increment)  - 100A Version: 0.00-100.0A (±1A error, 0.03A increment) · Power Measurement Range:  - 10A: 0-1000W  - 50A: 0-5000W  - 100A: 0-9999W · Impedance Display Range: 0-99999 Ω (excluding internal resistance) · Capacity Measurement Range: 0-999.999 Ah · Energy Metering Range: 0-999.999 Wh · Temperature Sensor: Cylindrical waterproof NTC 10K 3950 sensor (approx. 1 meter length) · Temperature Measurement Range: -40℃ to 120℃ (via external sensor) · Time Measurement Range: 0-999:59:59 (hours:minutes:seconds) · Working Current Consumption: 20mA at DC12V · Installation Hole Size: 45 x 26 mm (1.77 x 1.02 in) · Item Dimensions: 47.59 x 28.67 x 25.33 mm (1.87 x 1.13 x 1.00 in) · Item Weight: 30g (1.06 oz) Additional Notes: - The 10A version includes a low-temperature drift alloy resistance shunt onboard for direct connection. - The 50A and 100A versions require external 75mV shunts (50A or 100A rated) connected in parallel for accurate current measurement; shunts are not included and must be sourced separately. Package Includes: · 1 x 9in1 Multifunction Tester · 2 x Connection Cables This 9in1 Multifunction Tester is an indispensable tool for accurate, real-time electrical parameter monitoring, offering precise calibration, robust compatibility, and user-friendly data management. Its compact and energy-efficient design makes it perfect for a wide range of electrical diagnostic and maintenance tasks in both professional and portable settings.