A wireless scanner, also known as a cordless scanner, is a bar code reader that distinguishes it from a wired scanner. Generally, data is transmitted through Bluetooth, WIFI, etc., and data can be transmitted without being limited by the length of the data cable, which is convenient to use. 
For example, like a mouse and a wireless mouse, the benefit of a wireless mouse is that it is not subject to data lines and is more convenient and convenient to use. Similarly, the wireless scanner is also equipped with a wireless receiver, just like a wireless mouse. That is, we often say donggle, or Bluetooth receiver (however, this statement is not necessarily correct, the wireless communication method of the scanner is not necessarily Bluetooth, more commonly 433MHz or 2.4GHz wireless communication technology) .
First, the classification of wireless scanners can be distinguished from the different wireless communication technologies used.
The mainstream wireless communication methods used by wireless scanners are Bluetooth, 433MHz, 2.4GHz, and wireless communication methods such as wifi.
At present, the most common wireless communication method is 433MHz. The advantage of this band is that the wireless communication distance is farther than 2.4GHz. Because the frequency is lower than 2.4GHz and the wavelength is longer, it is more conducive to avoid obstacles and the farther the transmission distance. . Usually, 433MHz can reach a transmission distance of 100m-400m in an open place, while in indoors, its communication distance can reach 20m~60m, and the performance of 20m~30m is very sufficient. 2.4GHz wireless scanner, the performance of the wall is generally, generally a wall, and the distance can not be too far, strong anti-interference ability, 2.4GHz transmission rate is larger than 433MHz, more suitable for mobile environment.
Therefore, the more frequently used wireless communication frequency is 2.4 GHz. This frequency is the most widely used short-range wireless communication method. Bluetooth is also a 2.4GHz frequency, but Bluetooth is only a special case of 2.4GHz. 2.4GHz wireless scanner communication distance, generally within 10 meters, and Bluetooth.
Bluetooth wireless communication is actually a standardized 2.4GHz wireless communication mode. Under normal circumstances, both laptops and mobile phones will be equipped with a Bluetooth receiver. In other words, Bluetooth does not require additional wireless receivers, and both 433MHz and 2.4GHz wireless receivers (each wireless communication standard is slightly different, not necessarily universal, Bluetooth is common to all devices) Communication protocol).
Finally, let's talk about wifi scanners. In fact, there are very few on the market, which is generally a customized solution for enterprises. As the name suggests, it is connected to the wifi through a scanner. Subject to the appearance of the scanner, wifi connection is more inconvenient (how to enter the SSID and password without a button? Although it can be connected by point-to-point wifi, it is still inconvenient).
The following types of wireless scanners can be classified according to their usage patterns. For example, Ding Yi Hong Ji & Wan Cool Electronics have the typicality of scanning guns:
The first, wireless scanner + wireless adapter
Figure 1: VS5620 2D Wireless Barcode Scanner
Figure 1 is the most common form and the simplest wireless scanner. It supports Bluetooth and 433MHz wireless transmission and supports one-button quick connection. This type of wireless scanner is charged by the factory-delivered data cable. It is worth noting that different wireless scanners, charging data lines are generally not universal. Every family has its own standards.
Second, wireless scanner + wireless receiver + charging base
Figure 2: VS6130-BT portable 2D image scanner
This wireless distance will be farther and can achieve reliable transmission of 100 meters. The advantage of this is that it does not need to use the data cable for charging, and it has a Bluetooth dock directly connected to the computer. It is easy to plug and play. It also supports wireless charging technology and can be charged at any time.
Third, wireless barcode scanner
Figure 3: R30-2D ring-type 2D barcode scanner
Figure 4: VS3400-2D Portable 2D Barcode Scanner
The wireless barcode scanner of Figure 3 and Figure 4 is already an innovative version of the scanner. Compared to the scanner, these two products are more compact and portable, and all support wireless Bluetooth connection, which can be connected to mobile phones and computers. Support automatic disconnection of disconnection. Figure 3 shows that wearable is scanning, and now artificial intelligence wearable technology is already in the mainstream industry, and the innovation of wireless scanners is an inevitable trend.
Ok, this is the knowledge about wireless scanners that I want to introduce today, I hope to help everyone.
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