The Digital Insulation Resistance Tester features a safe design and improved circuitry. It is a new model with enhanced functionality, higher precision, and easier operation. This durable tester is shock-resistant, dust-resistant, and moisture-resistant, making it suitable for outdoor use.Features:- Test Voltage Options: Supports multiple test voltages: 100V, 250V, 500V, 1000V; capable of testing voltages below AC750V; resistance measurement range from 1 MΩ to 20 GΩ- Practical Functions: Auto-ranging during resistance measurement; data hold function; low battery indicator and high voltage warning- Large LCD Display: Equipped with a 3½-digit LCD display with a maximum reading of 1999, ensuring clear and easy readings- Safety Features: Rugged ABS housing provides dust and moisture protection; strong load capacity with an output short-circuit current of approximately 1.0mA; built-in protective circuitry guards against voltage surges- User-Friendly Design: Simple operation with a rotary switch to select test voltage; includes test leads, alligator clips, and a built-in kickstand for convenient placement- Wide Application: Suitable for testing various electrical equipment and insulation materials, including transformers, motors, cables, switches, and appliancesSpecifications:- Material: ABS- Color: Red- LCD Size: 68 x 44mm (2.67 x 1.73 inches)- Power Supply: 6 x 1.5V AA batteries (not included)- Operating Temperature: 0°C to 40°C- Relative Humidity: Less than 80%- Safety Category: CAT-II 1000V, CAT-III 600V- Product Dimensions: 205 x 90 x 55mm (8.07 x 3.54 x 2.16 inches)- Product Weight: 450g (15.87 oz)- Package Weight: 774g (27.3 oz)- Package Dimensions: 23.2 x 16.2 x 7cm (9.13 x 6.37 x 2.75 inches)Technical Parameters:- Rated Test Voltages: 100V, 250V, 500V, 1000V- Output Voltage Range: 90% to 110% of rated test voltage- Resistance Measurement Range: 1 MΩ to 20 GΩ- Resolution: 0.01 MΩ- Accuracy:- 1 MΩ to 200 MΩ: ±3% of reading + 5 digits- 200 MΩ to 10 GΩ: ±5% of reading + 5 digits- 10 GΩ to 20 GΩ: ±10% of reading + 5 digits- AC Voltage Measurement Range: 1V to 750V- AC Voltage Resolution: 1V- AC Voltage Accuracy: ±2% of reading + 5 digits- Frequency Response: 40Hz to 400HzPackage Includes:- 1 x Insulation Tester- 1 x Storage Bag- 1 x Pair of Test Leads- 1 x Pair of Probe Clips- 1 x User Manual (in English)Note: Due to lighting and screen setting variations, the actual product color may differ slightly from images. Slight dimensional variations may occur due to manual measurement.