What is an RFID handheld terminal?

The so-called RIFD handheld terminal refers to the use of (radio? Radio frequency identification technology for data acquisition. At present, it is mainly divided into three frequency bands: low frequency (LF), high frequency (HF) and ultra-high frequency (UHF). Low frequency generally refers to the reader and RFID tags stuck together, such as time cards, canteen meal cards and so on. The general frequency band of high frequency is 13.56MHZ, which means that readers and RFID tags can be read at a distance of several centimeters, such as bank cards and ID cards. Ultra-high frequency (900M) has different frequency bands all over the world, which generally means that readers and RFID tags can read at a distance of several tens of centimeters to several meters, and are generally used in fixed assets and warehouses. Reading distance is related to many factors, such as antenna, floating material of label and so on. At present, there are many manufacturers providing RFID handheld terminals in these three frequency bands, and Guangzhou Zhiyuan is one of them, which can provide three types of handheld terminals. You can contact their branches and offices all over the country if necessary. I believe I can solve your problem. I saw their HPC-6000E UHF machine at the Shenzhen Internet of Things Exhibition, as shown below:, I saw that some labels can be read more than 6M; Specifically, I measured that the metal resistance can also reach 2-3 meters; They are configured as follows: