---
product_id: 1161370
title: "LAYEN CSB - Home Security/Child Security Audio Surveillance. SIM Activated with Crystal Clear Sound – Call to Listen and Check Everything is OK"
brand: "layen"
price: "HK$366"
currency: HKD
in_stock: false
reviews_count: 13
url: https://www.desertcart.hk/products/1161370-layen-csb-home-security-child-security-audio-surveillance-sim-activated
store_origin: HK
region: Hong Kong
---

# Compact size: 4.2 x 3 x 1.2 cm 4 GSM bands (850/900/1800/1900 MHz) Up to 2 days standby, 1-2 hrs continuous use LAYEN CSB - Home Security/Child Security Audio Surveillance. SIM Activated with Crystal Clear Sound – Call to Listen and Check Everything is OK

**Brand:** layen
**Price:** HK$366
**Availability:** ❌ Out of Stock

## Summary

> 🔒 Stay connected, stay secure—your silent sentinel in a noisy world.

## Quick Answers

- **What is this?** LAYEN CSB - Home Security/Child Security Audio Surveillance. SIM Activated with Crystal Clear Sound – Call to Listen and Check Everything is OK by layen
- **How much does it cost?** HK$366 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/1161370-layen-csb-home-security-child-security-audio-surveillance-sim-activated)

## Best For

- layen enthusiasts

## Why This Product

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

## Key Features

- • **Invisible Guardian:** Ultra-compact design smaller than a matchbox for seamless concealment anywhere in your home or office.
- • **Long-Lasting Power:** Reliable rechargeable battery offers up to 2 days standby and extendable listening with portable power banks.
- • **Crystal Clear Audio:** Premium sound quality lets you hear every detail from anywhere by simply calling the device.
- • **Smart Voice Activation:** Automatically calls you when noise above 45dB is detected within 10 meters—never miss a moment.
- • **Global GSM Compatibility:** Works across UK, Europe, USA & Canada on major GSM networks—stay connected worldwide.

## Overview

The LAYEN CSB is a discreet, SIM-activated audio surveillance device designed for home and child security. Operating on quad-band GSM frequencies, it allows remote listening via phone calls or automatic voice-activated alerts. Its compact size, crystal-clear sound, and long battery life make it ideal for monitoring children, pets, or securing your property from anywhere globally.

## Description

High Quality & Discreet Home Security / Child Security Audio Surveillance Security DeviceThe LAYEN CSB is the perfect tool for your audio surveillance operation. Not only is it simple to set up and use, but its' unobtrusive size (smaller than a matchbox) makes it easy to place. It’s a premium audio device, which benefits from clear sound This tiny device works via mobile SIM card so you can literally call from anywhere to hear/check what is happening. You needn't be in the same room, or even the same country! You can call to listen whenever you want, or you can set it to voice activation, so that you are called by the device. Which SIM card? We recommend T-Mobile in the US - just ensure its a PrePay SIM that can be activated without the use of a mobile‘Used to keep audio surveillance on poorly horse stabled 15 miles from home. Works brilliantly great product and great support’Product Features: - Small in size, not in quality - Just smaller than a matchbox - Easy to use & set up - Insert a GSM Prepay SIM card, dial and listen or set to sound activation - Standby duration 1-2 days - Battery lasts for approx. 1-2 hours when constantly listening - Long distance capability - through mobile phone networkSpec: - Works in UK, Europe & America. Recommended SIM card in US is T-Mobile. Canada is Rogers or Fido (*MUST* be GSM network) - GSM frequency: 850 / 900/ 1800 / 1900 MHz - Battery: Re-chargeable 3.7V 500mAh Li-ion battery - Dimensions: 4.2 cm x 3cm x 1.2cmLAYEN Looking After Your Every Need

Review: Great product and satisfy what you want - Well first of all I really liked this product love it like I got ever think I wanted . desertcart said it will be delivered by 26 th of dec but I received this little cute item in 3 days that from England by Royal Mail fast delivery thanks for that. Then when I open it small little item looks great charge for 2 hours then I put h2o wireless SIM card in that works great with this network.did exactly what direction told me to do put the SIM card in it red light blinks for 3 seconds and then gone then I play videos on you tube n put the item nearby. Went far around 2 miles from home n called the number that has been activated with this item. I m shocked n surprise that I can listen ever think from that far u can call from any number n u can listen very clearly what other person is talking or anythink u want to do .really great thanks to laymen CBS that they made this product .hope they will sell more of this because I m ordering one more as soon I m getting my paycheck.
Review: Works Great. I bought it even though some of the reviews were bad. I charged the unit - This thing works. I couldn't believe it. I bought it even though some of the reviews were bad. I charged the unit, bought an H2O sim card, went to family dollar and bought h20 minutes and it worked. I found the web site on how to use it. http://www.layen-uk.com/LAYEN-CSB-Listening-Device--Instructions-Troubleshooting_b_15.html. The sound could be a little better but if you listen closely you'll hear every word. Oh yea, I live in the USA so it works here. I had to call h20 help but had this thing up and running within a half hour. Any questions, let me know. I'll try to help you out.

## Features

- The LAYEN CSB is the perfect home audio surveillance device. It's tiny and unobtrusive making it easy to conceal. Despite its' small size, it's a high quality security device, providing clear sound quality, long standby duration (around 2 days) and 1-2 hours constant use (extendable with a portable power-bank).
- It works through a Mobile GSM SIM card (not supplied). Simply insert a PAYG / PrePay SIM into the device and call it to turn the device on, you will be able to hear what is happening in the surrounding area straight away.
- Ideal Home Security Device. You can conceal the CSB easily within your house so any potential thieves wouldn’t know it was there. Set to voice activation and if the device hears anything it will call you. I.e. if somebody broke in and made noise, the device would pick this up and call you.
- ** IMPORTANT PLEASE READ ** The LAYEN CSB requires a GSM network (not CDMA) and runs off four GSM frequencies: 850/900/1800/1900 MHz. It works exactly like a mobile (with service / network reception etc. It will not work if the SIM card requires an IMEI number to activate it, as the CSB does NOT have an IMEI number to enable this)
- Need to check up on your children? - Check that your children are sleeping soundly! You can also use to check up on your pets if you’re away all day / worried about them - Versatile device - you can either call to listen OR you can set it to Voice Activation: when there is a sound above 45db within 10 metres of the device, you will be called to listen.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CIXAF8O |
| Brand | LAYEN |
| Customer Reviews | 3.5 3.5 out of 5 stars (98) |
| Date First Available | April 25, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.6 ounces |
| Item model number | gga6377343 |
| Manufacturer | LAYEN |
| Package Dimensions | 6 x 4 x 0.5 inches |
| Power Source | Air Powered |

## Product Details

- **Brand:** LAYEN
- **Compatible Devices:** Mobile Phone
- **Connectivity Technology:** Cellular
- **Included Components:** Battery
- **Special Feature:** Rechargeable

## Images

![LAYEN CSB - Home Security/Child Security Audio Surveillance. SIM Activated with Crystal Clear Sound – Call to Listen and Check Everything is OK - Image 1](https://m.media-amazon.com/images/I/41fyGukpqTL.jpg)
![LAYEN CSB - Home Security/Child Security Audio Surveillance. SIM Activated with Crystal Clear Sound – Call to Listen and Check Everything is OK - Image 2](https://m.media-amazon.com/images/I/51ZlwZH+e3L.jpg)
![LAYEN CSB - Home Security/Child Security Audio Surveillance. SIM Activated with Crystal Clear Sound – Call to Listen and Check Everything is OK - Image 3](https://m.media-amazon.com/images/I/51xWq9XjMsL.jpg)
![LAYEN CSB - Home Security/Child Security Audio Surveillance. SIM Activated with Crystal Clear Sound – Call to Listen and Check Everything is OK - Image 4](https://m.media-amazon.com/images/I/61dq6cR1FlL.jpg)
![LAYEN CSB - Home Security/Child Security Audio Surveillance. SIM Activated with Crystal Clear Sound – Call to Listen and Check Everything is OK - Image 5](https://m.media-amazon.com/images/I/61gQJHHAZ6L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product and satisfy what you want
*by D***H on November 21, 2013*

Well first of all I really liked this product love it like I got ever think I wanted . Amazon said it will be delivered by 26 th of dec but I received this little cute item in 3 days that from England by Royal Mail fast delivery thanks for that. Then when I open it small little item looks great charge for 2 hours then I put h2o wireless SIM card in that works great with this network.did exactly what direction told me to do put the SIM card in it red light blinks for 3 seconds and then gone then I play videos on you tube n put the item nearby. Went far around 2 miles from home n called the number that has been activated with this item. I m shocked n surprise that I can listen ever think from that far u can call from any number n u can listen very clearly what other person is talking or anythink u want to do .really great thanks to laymen CBS that they made this product .hope they will sell more of this because I m ordering one more as soon I m getting my paycheck.

### ⭐⭐⭐ Works Great. I bought it even though some of the reviews were bad. I charged the unit
*by M***E on September 29, 2014*

This thing works. I couldn't believe it. I bought it even though some of the reviews were bad. I charged the unit, bought an H2O sim card, went to family dollar and bought h20 minutes and it worked. I found the web site on how to use it. http://www.layen-uk.com/LAYEN-CSB-Listening-Device--Instructions-Troubleshooting_b_15.html. The sound could be a little better but if you listen closely you'll hear every word. Oh yea, I live in the USA so it works here. I had to call h20 help but had this thing up and running within a half hour. Any questions, let me know. I'll try to help you out.

### ⭐ Bad Sound Quality
*by B***O on June 1, 2014*

This is a great idea and I love the idea. It works exactly as described. I can either call the SIM number and listen in or send the sound activation code and it calls me. Then after I hang up it sends a text message with location coordinates. Unfortunately the sound quality is so bad that nothing can be understood. I can hear people talking but the sound is too distorted to derive anything intelligent out of it. To me that makes the device completely useless.

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-21*