---
product_id: 119815364
title: "MICRONIC WIRELESS GSM UK SIM CARD SPY BUG SURVEILLANCE MICROPHONE LISTENING DEVICE IN 4 WAY MAINS EXTENSION LEAD"
brand: "micronic"
price: "฿17895"
currency: THB
in_stock: true
reviews_count: 8
category: "Micronic"
url: https://www.desertcart.co.th/products/119815364-micronic-wireless-gsm-uk-sim-card-spy-bug-surveillance-microphone
store_origin: TH
region: Thailand
---

# Quad-band GSM antenna +5dBi gain Super-sensitive mic filters human voice 4-way extension lead, mains powered MICRONIC WIRELESS GSM UK SIM CARD SPY BUG SURVEILLANCE MICROPHONE LISTENING DEVICE IN 4 WAY MAINS EXTENSION LEAD

**Brand:** micronic
**Price:** ฿17895
**Availability:** ✅ In Stock

## Summary

> 🔍 Stay connected, stay ahead—surveillance that blends in flawlessly.

## Quick Answers

- **What is this?** MICRONIC WIRELESS GSM UK SIM CARD SPY BUG SURVEILLANCE MICROPHONE LISTENING DEVICE IN 4 WAY MAINS EXTENSION LEAD by micronic
- **How much does it cost?** ฿17895 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/119815364-micronic-wireless-gsm-uk-sim-card-spy-bug-surveillance-microphone)

## Best For

- micronic enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Sim Ready:** Pre-fitted O2 SIM card means zero setup—just plug in and start monitoring immediately.
- • **Sound-Activated Call Back:** Automatically calls your phone when sound above 40dB is detected, keeping you instantly informed.
- • **Unlimited Listening Range:** Global GSM connectivity lets you listen in from anywhere via your phone—no distance limits.
- • **Reliable UK Quality & Support:** Made in the UK with premium components and backed by dedicated UK customer service.
- • **Invisible Surveillance Powerhouse:** Covertly hidden in a fully functional 4-gang extension lead for seamless integration into any space.

## Overview

The Micronic Wireless GSM Spy Bug is a discreet audio surveillance device ingeniously concealed inside a fully functional 4-way UK mains extension lead. Featuring quad-band GSM technology with a high-gain antenna, it offers unlimited remote listening via any phone. Its super-sensitive microphone filters out background noise to focus on human voices up to 7 meters away. The device supports a sound-activated call back feature that alerts you instantly when noise is detected. Powered indefinitely by AC mains with a backup battery, it comes pre-installed with an O2 SIM card for immediate use and is supported by UK customer service.

## Description

A brilliantly camouflaged audio spy bug transmitter in 4 gang 1 metre extension lead. It is fully functional & operates just like an ordinary 4 gang extension lead. Fitted inside is an advanced GSM listening device that allows you to listen in from any phone. The range is unlimited & powered by AC mains to operate indefinitely & has internal battery that operates for 1-2 days if unplugged or switched off at socket. This is legal to use and completely free to operate as listening device however if you want to use the call back feature this requires credit (top up) to make calls back to your phone. Supplied & fitted with O2 sim card ready to use out of box. Simply plug into wall socket & call from your phone. No need to install sim card & no setting up required. You can call & listen whenever required or use sound activated "call back" mode that calls you when sound is heard (top up required). This feature automatically calls you when sound above 40db is heard. You can fit your own sim if preferred & small flat bladed screwdriver is required to open extension to remove & install new sim. Totally covert, discreet & completely silent to operate with no flashing lights or sounds. All models are made in UK by Micronic with every attention to detail. Fitted with latest quad band GSM module that is reliable and works in UK. These are genuine UK approved Masterplug extension leads and all parts are made with high quality components. This provides best performance at all times in all locations of UK. Masterplug 4 Gang (4 Way) 1 metre extension lead Supplied with FREE O2 SIM card Sound monitor range: Approx 5-10 metre (radius) Excellent sound quality and constant reception Quad band GSM mobile cell phone technology Quad band frequency: 850 / 900 / 1800 / 1900mHz High gain +5dbi dipole antenna Enhanced hidden microphone Sound activation call back Power: 230v AC mains operated Operating time: Indefinitely (24hr/365days) Working temperature: - 40º to +50º Deg.C Works with Micro/Nano SIM cards with adapter Sound activation level 40db (non adjustable)

Review: cannot get device to work - I purchased the device in march and i still cannot get it to work why cannot the sim card installed and tested at source
Review: Does what it says on the tin... - Works well, no complaints

## Features

- Wireless GSM sim card global listening device hidden inside fully functional 4 gang (4 way) 1 metre extension lead. Includes sound activated call back feature that calls your designated phone number when sound is heard. Up to 3 numbers can be stored and only works with your designated stored numbers. For legal reasons the device will cut off after 20 minutes and can be called back instantly to continue listening.
- Pre-fitted with O2 sim card ready to operate. Free to use as listening device with no need to add credit on sim. Sound activated call back feature requires credit (top up) on sim to be able to call back.
- Super sensitive enhanced high quality microphone filters out background noise, Radio and TV sound and focus's on human voice to provide the best possible audio. It can hear voices over 7 metres and is extremely clear when used in ideal conditions.
- Fitted with high gain GSM antenna to ensure reception in all area's and avoids dropping out during call. Operate indefinitely on AC mains or 1-2 days on internal built in battery.
- UK Telephone customer support and supplied with everything you need to operate with no hidden surprises or extra costs involved. Apart from minimum top up for call back feature if required. Its also recommended to top up sim at least once to avoid sim deactivation by network operaters. All netwroks reserve the right to deactivate any sim that has not paid to use their networks. This usually occurs between 30-90 days of misuse of their network.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NHCBJY2 |
| Best Sellers Rank | 78,219 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 642 in Spy Cameras |
| Brand | MICRONIC |
| Brand Name | MICRONIC |
| Colour | White |
| Compatible Devices | Smartphone |
| Customer Reviews | 2.8 out of 5 stars 33 Reviews |
| Enclosure Material | Plastic |
| Manufacturer | Micronic |
| Material | Plastic |
| Number of Outlets | 4 |
| Number of Ports | 4 |
| Other Special Features of the Product | Wireless GSM Sim Card Listening Device, Sound Activated Call Back, High Quality Microphone, High Gain GSM Antenna, UK Customer Support |
| Plug Type | Type G |
| Power Plug Type | Type G |
| Power plug type | Type G |
| Special feature | Wireless GSM Sim Card Listening Device, Sound Activated Call Back, High Quality Microphone, High Gain GSM Antenna, UK Customer Support Special feature Wireless GSM Sim Card Listening Device, Sound Activated Call Back, High Quality Microphone, High Gain GSM Antenna, UK Customer Support See more |
| Total power outlets | 4 |
| UPC | 742185050912 |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** MICRONIC
- **Colour:** White
- **Total power outlets:** 4
- **Voltage:** 2.3E+2 Volts (AC)
- **Power plug type:** Type G

## Images

![MICRONIC WIRELESS GSM UK SIM CARD SPY BUG SURVEILLANCE MICROPHONE LISTENING DEVICE IN 4 WAY MAINS EXTENSION LEAD - Image 1](https://m.media-amazon.com/images/I/611kyg37QKL.jpg)

## Questions & Answers

**Q: Are there recent reviews**
A: I doubt it

**Q: Can I place my own sim card especially as I will be taking device abroad?**
A: Never worked

**Q: What’s the largest capacity MicroSD memory card will it accept?**
A: Never ever worked

**Q: Does this device comes with a mobile app?**
A: No mobile App is required to use this device. It works with any mobile phone and all you need to do is call it when you want to listen. If you want to record sound you send SMS text message to start and stop recorder.

## Customer Reviews

### ⭐ cannot get device to work
*by M***H on 28 September 2020*

I purchased the device in march and i still cannot get it to work why cannot the sim card installed and tested at source

### ⭐⭐⭐⭐⭐ Does what it says on the tin...
*by R***E on 4 September 2020*

Works well, no complaints

### ⭐⭐ Crap design for sim card
*by M***M on 22 September 2024*

Looks ideal, but getting sim card in and out very difficult. It needs improving.. Looks ideal sockets work. I got a refund.

## Frequently Bought Together

- MICRONIC WIRELESS GSM UK SIM CARD SPY BUG SURVEILLANCE MICROPHONE LISTENING DEVICE & TF CARD SOUND RECORDER IN 4 WAY MAINS EXTENSION LEAD
- Magnetic Mini Voice Activated Recorder Micro Recording Devices Digital Small Sound Recorder Device Audio Recorder STTWUNAKE
- Voice Activated Wireless GSM Spy Bug SIM Mains 2 Way Adapter Plug Doubler Surveillance Adaptor - Genuine Gismotronix Device Assembled in UK

---

## 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.co.th/products/119815364-micronic-wireless-gsm-uk-sim-card-spy-bug-surveillance-microphone](https://www.desertcart.co.th/products/119815364-micronic-wireless-gsm-uk-sim-card-spy-bug-surveillance-microphone)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-10*