FNIRSI MRT1050 Insulation Resistance Tester AC DC Voltage Meter 100V to 1000V High Accuracy Portable Electrical Testing is a digital insulation resistance tester designed for electrical maintenance, insulation testing, and field diagnostics. It provides selectable 100V, 250V, 500V, and 1000V insulation test voltages, insulation resistance measurement up to 20GΩ, and AC/DC voltage measurement. It also features PI, DAR, timed measurement, comparison, data storage, automatic discharge, backlight, and high-voltage warning functions.



| Specification | Value |
|---|---|
| Brand | FNIRSI |
| Model | MRT1050 |
| Product Type | Digital Insulation Resistance Tester |
| Insulation Test Voltage | 100V / 250V / 500V / 1000V |
| Insulation Resistance Range | 0.1MΩ to 20GΩ |
| 100V Resistance Range | 0.1MΩ to 200MΩ |
| 250V Resistance Range | 0.1MΩ to 2GΩ |
| 500V Resistance Range | 0.5MΩ to 5GΩ |
| 1000V Resistance Range | 3MΩ to 20GΩ |
| Insulation Resistance Accuracy | ±(5% + 3 bits) |
| DC Voltage Range | 0 to ±1000V |
| AC Voltage Range | 30V to 750V |
| AC Voltage Frequency | 45Hz to 200Hz |
| Voltage Resolution | 1V |
| AC/DC Voltage Accuracy | ±(2% + 3 bits) |
| Display Count | 1999 |
| Power Supply | 8 × AA 1.5V Batteries / DC 12V |
| Data Storage | Up to 100 Groups |
| Functions | PI / DAR / Timed Measurement / Comparison |
| Dimensions | 182 × 124 × 66mm |
| Weight | 684g |
Explore the FNIRSI Collection featuring advanced digital multimeters, oscilloscopes, signal generators, laser rangefinders, thermal cameras, USB testers, and precision electronic test equipment. Ideal for electronics engineers, technicians, makers, DIY enthusiasts, troubleshooting, circuit analysis, industrial maintenance, and professional measurement applications.
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1 × FNIRSI MRT-1050 Insulation Resistance Tester
1 × Storage Bag
1 × Instruction Manual
1 × Test Lead Set
1 × Red Alligator Clip
1 × Black Alligator Clip
1 × Nylon Tape
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
If you receive a product damaged during shipment, please notify us within 3 days of receiving the product, supported by proper pictures and a description. Once our support team accepts the return, we will provide a replacement or a complete refund, including the return shipping cost.
If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.
We don’t accept returns for products damaged due to improper use. Moreover, we don’t accept returns if the ordered product is not suitable for a specific application. Please read the product specifications and datasheet carefully before placing an order. Returns are accepted only within 3 days from the date of delivery.
We ship all over India with free shipping on all prepaid orders above ₹500. For Cash on Delivery (COD) orders, ₹80 will be charged for orders below ₹599 and ₹30 for orders above ₹599.
For any questions related to shipping, please contact our support team at support@quartzcomponents.com.
Note: The minimum order value for COD orders is ₹500.