3pcs HC-05 RF Wireless Bluetooth Transceiver Slave Module RS232 / TTL to UART Converter and Adapter

Feature Works with any USB Bluetooth adapters Default Baud Rate 9600 8 1 n Built in antenna Coverage up to 30ft Bluetooth version V2 0 EDROperating voltage 3 3VDefault Baud Rate 9600 8 1 n Signal coverage 30ftItem size 4 3 x 1 6 x 0 7cmItem weight 3gPackage size 9 x 3 x 1cmPackage weight 8gCommercial Series Bluetooth module board SeriesWith LED indicator light use 150mA and 3 3V regulation chip With VCC GND TXD RXD foot for the BluetoothWith Research button ON OFF WAKE foot for it external MCU output High level can control module to re search Compatible with bluetooth master module slave moduleor master slave whole module Input voltage 3 3 6VSize 1 55cm x 3 98cm Note Input power supply 3 3 6V Prohibit more than 7VNo Automatically prevent power supply reversing function so please correctly connect power supply We advise installing Bluetooth master module The State is output foot for LED status when bluetooth Unconnected output Pulse when bluetooth connected output High level we can determine the states from MCU If only the board No any Bluetooth Function Package includes 3 x Bluetooth module