---
product_id: 158495563
title: "Metravi ST-09B Socket Polarity Tester"
brand: "metravi"
price: "NT$225"
currency: TWD
in_stock: false
reviews_count: 7
url: https://www.desertcart.tw/products/158495563-metravi-st-09b-socket-polarity-tester
store_origin: TW
region: Taiwan
---

# 6A current capacity 250V max input voltage 30mA leakage detection Metravi ST-09B Socket Polarity Tester

**Brand:** metravi
**Price:** NT$225
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Stay ahead of electrical faults with Metravi’s smart socket guardian!

## Quick Answers

- **What is this?** Metravi ST-09B Socket Polarity Tester by metravi
- **How much does it cost?** NT$225 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/158495563-metravi-st-09b-socket-polarity-tester)

## Best For

- metravi enthusiasts

## Why This Product

- Trusted metravi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Certified Reliability:** CE-certified for trusted performance in professional electrical inspections.
- • **Leakage Current Testing:** Built-in leakage test up to 30mA ensures your circuits meet safety standards effortlessly.
- • **Compact & Portable Design:** Lightweight 200g digital tester fits perfectly in your toolkit for on-the-go diagnostics.
- • **Comprehensive Error Alerts:** Detects missing Earth, live-earth reversal, live-neutral reversal, and more for foolproof safety.
- • **Precision Polarity Detection:** Instantly verify LINE, NEUTRAL & EARTH wiring accuracy to avoid costly errors.

## Overview

The Metravi ST-09B Socket Polarity Tester is a compact, battery-powered device designed for professional-grade electrical safety checks. Supporting currents up to 6A and voltages up to 250V AC, it accurately identifies wiring errors including polarity reversals and missing earth connections. Additionally, it features a leakage current test up to 30mA, making it an essential tool for electricians and facility managers committed to flawless, code-compliant installations.

## Description

Metravi 1300 lux meter is a stable, safe, reliable mini digital light meter, widely used in lightening enterprises, agriculture and animal husbandry, mining enterprises, laboratory, office, household street lights construction and others.4 digits backlit lcd, max / min record, data hold, digital lux meter, can measure up to 200,000 lux, also measures in fc (foot candle), high sampling rate, overload indication, auto power off, low battery indication.

Review: world's best - world's best socket tester
Review: Good product - Product is good.

## Features

- To be used for currents up to 6A, Input voltage up to 250V AC
- It indicates whether the connections of LINE, NEUTRAL & EARTH is correct
- Indicates errors for missing Earth, Live earth reversal, Live Neutral Reversal, Missing Neutral, Live Earth Reversal & Missing Neutral
- Can also be used for leakage test of up to 30mA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07SR1HMNZ |
| Brand | METRAVI |
| Brand Name | METRAVI |
| Customer Reviews | 4.0 out of 5 stars 36 Reviews |
| Included Components | Polarity Tester |
| Item Dimensions | 10.2 x 25.4 x 5.1 Centimeters |
| Item Type Name | Polarity Tester |
| Item Weight | 200 Grams |
| Item dimensions L x W x H | 10.2 x 25.4 x 5.1 Centimeters |
| Manufacturer | Metravi Instruments, Metravi Instruments |
| Manufacturer Contact Information | Metravi Instruments |
| Maximum Operating Voltage | 250 Volts |
| Measurement Type | Ohmmeter |
| Model Number | ST-09B |
| Packer Contact Information | Metravi Instruments |
| Part Number | ST-09B |
| Power Source | Battery Powered |
| Power Source Type | Battery Powered |
| Specification Met | CE |
| Style | Digital |
| Style Name | Digital |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Warranty |

## Product Details

- **Brand:** METRAVI
- **Power Source:** Battery Powered
- **Style:** Digital
- **Item Weight:** 200 Grams
- **Item dimensions L x W x H:** 10.2 x 25.4 x 5.1 Centimeters

## Images

![Metravi ST-09B Socket Polarity Tester - Image 1](https://m.media-amazon.com/images/I/51L3xWKdRCL.jpg)
![Metravi ST-09B Socket Polarity Tester - Image 2](https://m.media-amazon.com/images/I/51+kAIFMqiL.jpg)
![Metravi ST-09B Socket Polarity Tester - Image 3](https://m.media-amazon.com/images/I/51-hUqvfLEL.jpg)
![Metravi ST-09B Socket Polarity Tester - Image 4](https://m.media-amazon.com/images/I/61abLWFG2qL.jpg)
![Metravi ST-09B Socket Polarity Tester - Image 5](https://m.media-amazon.com/images/I/61Uu4VZ+lhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ world's best
*by G***L on 18 February 2022*

world's best socket tester

### ⭐⭐⭐⭐⭐ Good product
*by K***R on 28 June 2021*

Product is good.

### ⭐⭐⭐⭐ Socket check for earthing
*by A***R on 20 November 2021*

Easy to use and accurate product for finding earthing and voltage issues

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tw/products/158495563-metravi-st-09b-socket-polarity-tester](https://www.desertcart.tw/products/158495563-metravi-st-09b-socket-polarity-tester)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-05-19*