The HY-40R204I is a 2.4 GHz Bluetooth 4.2 module from Shengrun Technology, which uses a high-performance TI CC2640R2F chip. It can be powered directly using a standard 3V coin cell battery or a pair of AAA batteries. In the lowest power shutdown mode, it consumes only 0.15uA and wakes up in a few microseconds.
With the rise of the IOT, and development of smart devices, everyone is becoming more aware of wireless communication technologies. Bluetooth and WiFi are well known among many wireless technologies,As a safe, intelligent and fast wireless technology, Bluetooth is naturally more important.
At present, many Bluetooth modules on the market still cannot support users for secondary development. Even if they are supported, users need to learn the relevant knowledge of MCU and Bluetooth protocol, so they must spend a lot of time to get familiar with them, and finally lead to half the effort.
With the rapid development of technology, various smart devices are emerging difference. Smart wearable devices and smart home devices centered on smartphones often use wireless connection technologies such as Bluetooth and WiFi. In particular, Bluetooth provides a stable and low-energy data transmission service for devices.
The powerful Bluetooth 4.2 module is not only powerful in two modes, but also provides a number of additional features, including rich AT commands, as well as custom or standard Bluetooth services, providing more reliable and advanced intelligence for applications control.