Bluetooth 5.3 BLE Module: The chipset is CC2340 from TI,Compared to the Bluetooth 4.0 module, this Bluetooth 5.3 BLE module has a faster transfer rate and a larger MTU. Compatible with HM-10: if you are using HM-10 now, you can quickly upgrade your board to Bluetooth 5.3 BLE. Free Software: DSD TECH offers a free app that you can get this module into work in 5 minutes. Please search "DSD TECH Bluetooth" in Google Play App store.
Technical Support & File：
1, Support File
The HM-20 is an upgraded version of the HM-10. The HM-20 uses TI's CC2340 chip as the master IC. Compared to HM-10, HM-20 is a Bluetooth 5.3 BLE module,it has a faster transfer rate and a larger MTU.
Specifications：
Model: HM-20
Work voltage（VCC）: 3.6V to 6V
TTL logic level (TX, RX): 3.3V
Bluetooth protocol: 5.3 BLE
Chip: TI CC2340
PIN: VCC,GND,TX,RX
Support iOS: YES
Support Android 5.0 or later
Support PC or MAC: NO
Precautions：
Bluetooth 5.0 BLE module is not compatible with any Bluetooth 2.0 SPP device
The AT commands of the HM-20 module are compatible with the AT commands of the HM-10 module (except for the baud rate setting)
About Test APP：
DSD TECH offers a free app that lets you quickly integrate this module into your project.
For android, Please search "DSD TECH Bluetooth" in Google Play.
For iOS Devices(iPhone) ,Please search "DSD TECH Bluetooth" in the App Store
Technical Support & File：
1, Support File
The HM-20 is an upgraded version of the HM-10. The HM-20 uses TI's CC2340 chip as the master IC. Compared to HM-10, HM-20 is a Bluetooth 5.3 BLE module,it has a faster transfer rate and a larger MTU.
Specifications：
Model: HM-20
Work voltage（VCC）: 3.6V to 6V
TTL logic level (TX, RX): 3.3V
Bluetooth protocol: 5.3 BLE
Chip: TI CC2340
PIN: VCC,GND,TX,RX
Support iOS: YES
Support Android 5.0 or later
Support PC or MAC: NO
Precautions：
Bluetooth 5.0 BLE module is not compatible with any Bluetooth 2.0 SPP device
The AT commands of the HM-20 module are compatible with the AT commands of the HM-10 module (except for the baud rate setting)
About Test APP：
DSD TECH offers a free app that lets you quickly integrate this module into your project.
For android, Please search "DSD TECH Bluetooth" in Google Play.
For iOS Devices(iPhone) ,Please search "DSD TECH Bluetooth" in the App Store
