HC-05 and HC-06 Bluetooth serial modules – add wireless serial to any microcontroller and talk to it from a phone or PC. The HC-05 can act as master or slave; the HC-06 is slave-only.
Specifications
Bluetooth: 2.0 + EDR, Serial Port Profile (SPP)
Supply: 5V module (3.3V logic on RX)
Interface: UART (TX/RX), configured via AT commands
Operating temperature: −40 to +85°C
Options: HC-05 or HC-06
Classic Bluetooth only – not compatible with iPhone apps, which require Bluetooth Low Energy.
