DSD TECH HM-17 Bluetooth 4.2 Module with CC2640R2F Chip for Arduino Compatible with iPhone

The HM-17 is an upgraded version of the HM-11. The HM-17 uses TI's CC2640R2F chip as the master IC. Compared to HM-11, HM-17 is a Bluetooth 4.1 module,it has a faster transfer rate and a larger MTU. This module can be used not only for your electronic production, but also for your products. Work voltage?VCC?: 3.6V to 6V TTL logic level (TX, RX): 3.3V The AT commands of the HM-17 module are fully compatible with the AT commands of the HM-11 and HM-10 module. About Test APP. For android, Please search "DSD TECH Bluetooth" in google play. For iOS, You can use some common BLE APP to receive and send data ,like "LightBlue" or "BLE Scanner" WARRANTY We back this item with ONE YEAR WARRANTY. If you meet any question, please contact us, we will fix your issue within 24 hours.