The differences between Bluetooth 5.3 and Bluetooth 5.2 are as follows:
1. The low-speed connection is different. A big advantage of Bluetooth 5.3 version is that it can transmit some lower-rate data, but this cannot be achieved in Bluetooth 5.2. The advantage of 5.3 is that even low-power low-rate signals will not affect use. This function is probably most common on medical equipment such as blood glucose meters. 5.3 is indeed very helpful in optimizing medical equipment.
2. Encryption control enhancements are different. Bluetooth 5.3 improves encryption key length control, so security has been greatly improved. This function is more suitable for some open signals, such as access control, commercial lighting and other equipment, and the operation control is also very simple for managers, and the connection speed is also greatly improved.
3. Periodic broadcast enhancements are different. The broadcast function of Bluetooth 5.3 is more stable than that of 5.2. 5.2 needs to broadcast to connected devices regularly, but with Bluetooth 5.3, you can use the broadcast time to do more things.