This is our best-performing GSM mains adaptor listening device following a module upgrade in January 2025. It operates as a fully working mains adaptor with improved GSM reception and sensitive microphone pickup. The upgraded GSM module is exclusively manufactured for us in the UK and is not available anywhere else – offering superior quality compared to cheap imports.

Ready to use straight from the box: We test and configure every device before dispatch. Just plug it into a mains socket, dial the number supplied (or insert your own SIM card), and begin monitoring instantly – from anywhere in the world.

Smart Listening Features with Global Access

The built-in auto-call back feature (also known as sound activation) will alert you via call when noise is detected. Easily toggle this function on/off with a simple SMS text command. Ideal for discreetly monitoring your home, office or property remotely.

Our advanced filtering technology ensures crystal-clear, buzz-free audio transmission. All products are brand new and come with a 12-month guarantee.

🔍 Key Features at a Glance

• ✅ Fully functional UK mains adaptor with built-in GSM bug
• 🎤 Sensitive microphone captures audio within an 8-metre (25 feet) radius
• 🛠️ Handmade and built to order in the UK (Upgraded August 2025)
• 🌍 Global remote access – dial in or receive auto-callbacks from anywhere
• 📶 Quad Band GSM Module (compatible with any worldwide GSM mobile network)
• 📱 Easily activate or deactivate auto-callback via SMS command
• 🔌 Mains powered – ideal for unlimited, long-term audio surveillance
• 🎧 Filtered sound with no background buzz – ensures excellent audio clarity

📦 How It Works

1. Insert the pre-installed SIM card (included) or use your own.
2. Plug the device into any UK 3-pin mains socket.
3. Dial the number to listen live, or set it to auto-call you upon detecting sound.
4. Use the SMS code provided to toggle settings remotely – especially helpful when abroad.

📐 Technical Specification

• Double mains adaptor with discreet built-in GSM microphone
• Unlimited listening time – powered by continuous mains connection
• Quad Band compatibility: works on all standard GSM networks globally
• Hand-assembled in the UK with expert quality control

📦 Please note: This product is bespoke, handmade to order and promptly dispatched from us in the UK.

⚠️ Legal Use Disclaimer

Warning: This product is for lawful surveillance and monitoring of property you own or manage. Always comply with local privacy, surveillance, and data protection laws. Recording people without consent may be illegal in your jurisdiction.