# Insulation Resistance Tester Unit UT501B with 1000V Test Voltage, 5GOhm Range, 600V AC Voltage, DAR, PI, and 2000 Count LCD Display

**URL:** https://aio.lv/en/product--unit-ut501b--12622612
**Data updated:** 2026-08-13 04:17 (EEST)
**Category:** Other goods
**Manufacturer:** Unit
**Manufacturer code:** UT501B
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 90.30 €
**Prices and availability valid until:** 2026-10-07 23:59
**Price without VAT (21%):** 74.63 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--unit-ut501b--12622612

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 16.09.2026 | 1.79 EUR |
| Courier delivery to door | 16.09.2026 | 4.99 EUR |

## Summary description

Unit UT501B digital insulation resistance tester designed for evaluating electrical equipment, household appliances, transformers, and cables. Features up to 1000V test voltage, 5GOhm measurement range, 600V AC voltage detection, Polarization Index (PI), Dielectric Absorption Ratio (DAR), and a 2000 count backlit LCD display. Essential diagnostic tool for electrical safety maintenance and accurate field testing.

## Long description

The Insulation Resistance Tester Unit UT501B is a reliable digital diagnostic tool designed for evaluating electrical equipment, household appliances, transformers, and cables. Featuring up to 1000V test voltage, a 5GOhm measurement range, and 600V AC voltage detection, this device ensures comprehensive electrical safety maintenance. Equipped with advanced diagnostic functions such as Polarization Index (PI) and Dielectric Absorption Ratio (DAR), it delivers precise evaluation of insulation condition. The instrument features a 2000 count backlit LCD display for clear visibility in various work environments.
Advantages
The Unit UT501B offers high accuracy and dependable performance for professional electrical testing. Its automatic discharge function enhances user safety by safely draining residual voltage after measurements are completed. Continuous measurement modes, supported by a red warning light and buzzer, simplify extended testing tasks. Additionally, the low resistance returning to zero function improves measurement precision, while auto power-off preserves battery life during field operations.
Suitable for
Testing insulation resistance of electrical equipment and household appliances
Evaluating transformers, generators, and high voltage motors
Inspecting cables and capacitors for electrical safety
Measuring AC voltage and checking low resistance
Conducting Polarization Index and Dielectric Absorption Ratio evaluations
When it may not be suitable
This device may not be suitable for applications requiring test voltages exceeding 1000V or insulation resistance ranges beyond 5GOhm, as higher capacity requirements would necessitate specialized high-voltage testing equipment. It is also not designed for non-electrical diagnostic tasks.
Key specifications
Test voltages: 250V, 500V, 1000V
Insulation resistance measurement range: Up to 5GOhm
AC voltage measurement: Up to 600V
Display: 2000 count LCD with backlight
Diagnostic functions: Polarization Index (PI), Dielectric Absorption Ratio (DAR)
Safety and operational features: Auto discharge, continuous measurement mode, red warning light and buzzer, auto power-off
How to use
To use the insulation resistance tester, connect the test leads to the designated terminals and select the appropriate test voltage corresponding to your application requirements. Apply the probes to the circuit or equipment under test to measure insulation resistance, AC voltage, or perform continuous measurements. Review the results on the backlit LCD display. The device automatically calculates resistivity values for PI and DAR tests and discharges the circuit safely after measurement completion.
What to consider before purchase
Verify the required test voltage range for your specific electrical testing applications
Confirm whether 1000V test voltage and 5GOhm range meet your operational standards
Check if advanced diagnostic features like PI and DAR are needed for your maintenance tasks
Usage recommendations
Always ensure that circuits are completely de-energized and disconnected from power sources before connecting the insulation resistance tester, unless specifically measuring AC voltage, to prevent equipment damage and personal injury.

## FAQ

### How much does the Insulation Resistance Tester Unit UT501B cost, and is it available for purchase?

The price is 90.30 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Friday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Insulation Resistance Tester Unit UT501B be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Unit products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Unit service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12622612/69298866_large.webp