# Network Socket Tester Ermenrich Zing ST40 — Ermenrich handheld tester for electrical outlet wiring

**URL:** https://aio.lv/en/product--ermenrich-82963--12104608
**Data updated:** 2026-03-20 09:54 (EET)
**Category:** Cable testers
**Manufacturer:** Ermenrich
**Manufacturer code:** 82963
**EAN:** 5905555017426
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 9.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ermenrich-82963--12104608

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Handheld network socket tester Ermenrich Zing ST40 designed to check electrical outlet wiring and basic socket faults. The device verifies wiring presence and common miswirings in standard mains sockets, providing quick diagnostics for electricians, maintenance technicians and DIY users. Compact and portable, it is intended for on-site troubleshooting of household and commercial outlets.

## Long description

The Ermenrich Zing ST40 is a handheld network socket tester designed to check electrical outlet wiring and identify common socket faults. Compact and portable, the tester quickly verifies the presence and correctness of wiring in standard mains sockets, helping electricians, maintenance technicians and DIY users diagnose wiring issues on-site. The device is suited for routine checks of household and commercial outlets where basic verification of live, neutral and earth connections is required.
Advantages
The Ermenrich Zing ST40 offers rapid, one-person diagnostics without the need for additional tools. Its compact form factor makes it easy to carry and deploy in tight spaces, while simple indicators provide a clear, immediate assessment of wiring conditions. The tester reduces inspection time by quickly signalling correct wiring and common miswirings, enabling efficient fault identification and decision-making on whether further detailed testing is necessary.
Suitable for (tasks / use cases)
 Quick verification of live, neutral and earth connections in mains sockets
 Routine site inspections by electricians and maintenance staff
 Pre-use safety checks for household power outlets
 Initial troubleshooting of sockets showing intermittent power or apparent faults
Key specifications
 Handheld, portable design for on-site use
 Visual indication of wiring presence and common miswiring conditions
 Compatible with standard mains wall sockets
 Operates without external power supply (battery-operated or passive; requires no mains adapter)
 Rugged enclosure suitable for routine field inspections
How to use
Insert the Ermenrich Zing ST40 into the target mains socket and observe the device indicators. The tester will display the wiring status and signal common miswirings or missing connections according to its indicator scheme. Use the visual output to determine whether wiring is correct or if further investigation with specialised test instruments is required. Always follow local safety procedures: ensure hands are dry, the environment is safe, and avoid using the tester on visibly damaged outlets.
Usage recommendations
Use the Ermenrich Zing ST40 as a preliminary diagnostic tool rather than a substitute for comprehensive electrical testing. For suspected complex faults, concealed wiring issues or when precise voltage/resistance measurements are needed, follow up with appropriate measuring instruments and qualified personnel. Store the tester in a dry place and inspect it for damage before each use.

## FAQ

### How much does the Ermenrich Zing ST40 Socket Tester cost, and is it available for purchase?

The price is 11.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 14.07.2026 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 Ermenrich 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 Ermenrich 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/12104608/67641420_large.webp