What Should You Know About Bluetooth 4.2 Module?

2022-07-06/ By Admin

Standard Bluetooth technology has grown quite popular in communication, and it has become one of the quickest emerging industries in wireless technology. The Bluetooth technology is always changing. bluetooth 4.2 module is by far a popular and easily available version.

What should you know about bluetooth 4.2 module?

But what does this Bluetooth signify for wireless headsets?

Bluetooth comes in a variety of versions or modules. Every one of these versions has its own set of enhancements and adjustments. Does the latest Bluetooth version make a difference, and should you consider purchasing a bluetooth 4.2 module set for your headphones or other gadgets? Let’s investigate.

What Exactly Is Bluetooth?

Before we go into the specifics, let's know what Bluetooth is? For those who are unfamiliar, it is a narrow or small-range wire-free link between smartphones, tablets, Pcs, and similar electronic gadgets. While a Bluetooth module is a chip providing Bluetooth specifications, this chip is a semi-finalized product. Consider a manufacturer wants to install Bluetooth in its headphones, company would buy these modules and would insert them. Yes, it is just that simple! Yet, you should not mix Bluetooth radio signals with broadcasts because the two technologies are vastly different.

What makes bluetooth 4.2 module much safer?

Bluetooth 4.2 module technology connects devices that are incredibly safe and secure. That is why there is no need to worry regarding hacking. This is because these gadgets work on a variety of frequencies. Thus, the gadgets continue to hop between several frequencies 100 times each second. That is why it is also known as the frequency hopping spread spectrum.

What does Data rate indicate?

Bluetooth 4.2 has a data rate of 3Mbps. Bluetooth 4.2 has plenty of room to accommodate the best quality wireless audio possible. This means that no matter how faster and better Bluetooth versions grow, it won't matter until a greater codec is developed. Your music will not sound any better! The latest codecs keep audio files compact enough that the increased bandwidth is insignificant. Bluetooth 4.2 has a higher data rate of 1 Mbps.

Features of bluetooth 4.2 module:

  • Greater range: Bt 4.2 can connect to some other device for up to 60 meters (200 feet).
  • Languages: Some of the languages used when purchasing a new Bluetooth module can be changed as per choice. It's understandable. Bluetooth is, after all, Bluetooth.
  • Make your life smart: Bluetooth is also required for many Smart homes or IoT devices. Few of them are highlighted here: smart home lock, light sensors, smart home appliance controller. Although Bluetooth technology concentrates mostly on the sound quality of wireless earphones and headphones.
  • Bitrates: The data quantity sent in particular quantity of time is known as bitrate. Bitrates up to 1Mbps are supported by Bluetooth 4.2.

What is a Bluetooth module?

A Bluetooth module is a chip's basic circuit set with an inbuilt Bluetooth capability that is used for small-range 2.4G wireless communication. A Bluetooth module means a half-finished or yet-to-be-completed product for the end customer. The final product capable of using Bluetooth communication is realized through the procedure of operational reconstruction and packing of the shell depending on the module.

What are the types of Bluetooth modules?

As per the applications and support protocol, Bluetooth modules are classified into two types: classic Bluetooth modules and low-power Bluetooth modules.

The classic module of Bluetooth:

  • A unit that enables the BT protocol below 4.0 and is typically used for reasonably big data transmissions such as voice, music, as well as other high data transmissions.
  • Conventional Bluetooth modules and higher-speed Bluetooth modules are two types of classic Bluetooth modules.
  • The typical Bluetooth modules mostly represent units that enable the Bluetooth 2.1 protocols, and it became widely used with the rise of smartphones.
  • The high-speed Bluetooth with a speed improvement to around 24mbps is eight times faster than the regular Bluetooth module.
  • It is simple to use for data transmission from VCR to HD-TV, UMPC to the printer, and PC to PMP.

Bluetooth low power module or BLE:

  • The low power module Bluetooth is commonly known as the BLE module. This is a component that enables the Bluetooth protocols 4.0 or above.
  • Its most significant characteristic is an aid for power saving, which is mostly tied to gadgets that do not consume a lot of bandwidth.
  • Applications: Smart homes like Bluetooth lock, Bluetooth light, sensor data transfer like temperature sensor, sphygmomanometer, consumer electronics like remote-controlled toys, electronic cigarettes, and so on.
  • Bluetooth technology energy is not the same as standard Bluetooth. This Bluetooth technology energy is based on Nokia's Wibree specification.
  • Traditional Bt has 3 levels of energy usage, classes 1, 2, and 3, which provide transmission distances of 100m, 10m, and 1m, respectively.
  • Bluetooth low power has no energy consumption level and transmission power of 7dbm in general.
  • Bluetooth Mesh technology is supported by the BLE5.0 module.

How many devices may be connected at the same time in bluetooth 4.2 module?

In the Wireless Specification for 4.2 editions, there is no specific limit on the number of concurrent links for a Bluetooth low-energy device. As a result, this restriction is set by the Physical layer and the host OS's limits. As you stated, an iPhone can connect to ten devices, however, an Android Smartphone might not be able to link to ten devices. It is also up to the OS how you use the resources, manage the timings required for BLE, and perform other duties. As a result, the whole combination of software and hardware will determine the limitation of your Bluetooth device.

Why should you choose SkyLab?

SkyLab is an emerging Bluetooth technology in the market. We focus mainly on our product’s quality and customer satisfaction. We provide best Bluetooth modules with: Audio signals that can be programmed in many languages are supported.


  • Stereo Headphones
  • Stereo headset and earphones that are wired
  • Bluetooth stereo speakers that are portable and other applications as well


  • Adopting a high-performance amplifier chip in bluetooth 4.2 module that is both practical and long-lasting.
  • 100% spanking new and of good quality.
  • Dual-channel output with high efficiency.
  • Excellent sound quality, ideal for updating and re-fixing the unused sound box as well as DIY production.