DSD TECH HM19 Bluetooth 50 BLE Module with CC2640R2F Chip for Arduino and DIY

The HM-19 is an upgraded version of the HM-11. The HM-19 uses TI's CC2640R2F chip as the master IC. Compared to HM-11, HM-19 is a Bluetooth 5.0 BLE module,it has a faster transfer rate and a larger MTU. This module can be used not only for DIY project, but also for your products. Work voltage?VCC?: 3.6V to 6V TTL logic level (TX, RX): 3.3V Bluetooth protocol: 5.0 BLE Chip: TI CC2640R2F The AT commands of the HM-19 module are compatible with the AT commands of the HM-11 and HM-10 module. 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 Appstore WARRANTY We back this HM-19 Bluetooth 5.0 BLE module with ONE YEAR WARRANTY. If you meet any question, please contact us, we will fix your issue within 24 hours.