# Digital Voltage Meter RC System S-UMD9 — Digital Voltage Tester, Single-Phase Measurement

**URL:** https://aio.lv/en/product--rc-system-s-umd9--12271339
**Data updated:** 2026-04-16 16:30 (EEST)
**Category:** Measuring tools
**Manufacturer:** RC System
**Manufacturer code:** S-UMD9
**EAN:** 5905178771286
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 12.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 10.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rc-system-s-umd9--12271339

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

RC System S-UMD9 is a digital voltage meter designed for measuring AC mains voltage. The device provides numeric voltage readout suitable for electricians and technicians for testing single-phase circuits, verifying supply presence and troubleshooting electrical installations. Compact and easy to operate, it fits use in maintenance, repairs and field inspections.

## Long description

RC System S-UMD9 is a compact digital voltage meter designed for single-phase AC mains measurement. The device displays numeric voltage readouts on a clear screen and is intended for electricians, technicians and maintenance personnel who need to verify presence of supply, measure line voltage and perform basic troubleshooting of electrical circuits. Its compact form factor and straightforward controls make it suitable for use in maintenance, repair and field inspection tasks.
Advantages
The S-UMD9 provides an accurate digital readout of AC mains voltage with a fast response time and easy-to-read display. Its compact construction and simple operation reduce handling time during routine checks. The meter is portable and lightweight, enabling convenient transport to job sites and quick on-site verification of single-phase circuits without the need for large diagnostic equipment.
Suitable for
Checking presence of single-phase AC supply at outlets and junctions
Measuring line-to-neutral voltage in residential and light commercial installations
Quick verification during maintenance and field inspections
Troubleshooting basic wiring faults and verifying supply continuity
When it may not be suitable
The S-UMD9 is intended specifically for single-phase AC mains voltage measurement and is not designed for advanced diagnostics such as harmonic analysis, power factor measurement or three-phase system balancing. It is also not a replacement for insulated, high-voltage test equipment required for live-line work at elevated voltages; for those tasks specialized tools and protective equipment compliant with applicable safety standards are required.
Key specifications
Measurement type: single-phase AC mains voltage
Display: numeric digital readout for voltage values
Form factor: compact and portable handheld device
Primary use: verification of supply presence and basic troubleshooting
How to use
Connect the meter according to the user instructions, ensuring correct probe or terminal contact with the live and neutral conductors. Read the numeric value on the display once the measurement stabilizes. Use the device for spot checks and short measurement sessions; avoid prolonged exposure to harsh environments. Follow standard safety procedures for working with live electrical installations, including de-energizing circuits when required and using appropriate personal protective equipment.
What to consider before purchase
Confirm that single-phase AC mains voltage measurement meets your application needs
Check compatibility with the voltage range of your installation and local supply standards
Consider whether advanced measurement functions (e.g., three-phase, current, frequency) are required for your work
Ensure you have appropriate safety equipment and training for live measurements
Usage recommendations
Use the RC System S-UMD9 for quick verification of supply presence and routine on-site voltage checks. For complex diagnostics, prolonged measurements, or work on high-voltage or three-phase systems, use dedicated instruments and follow applicable safety standards.

## FAQ

### How much does the Digital Voltage Meter RC System S-UMD9 cost, and is it available for purchase?

The price is 12.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 13.07.2026 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. All transactions are 100% secure and encrypted.

### 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 RC System 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 RC System 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/12271339/68191015_large.webp