HC-08 Bluetooth 4.0 Serial Port Module

Description

Description TXD: Serial transmission 3.3V TTL level RXD: Serial receiver 3.3V TTL level CTS: Series flow control, is not supported! RTS: Series flow control, is not supported! DC: simulation, burn clock pin. DD: simulation, data-recognizing results. RST: Reset Pin, require low level is no less than 5ms to reset. VCC: Power pin, require DC 3.3V supply current is not less than 100mA Operating voltage range: 2.0V~3.6V GND: module in common LED: Output pin, high level output. Before connecting: When the host does not record the slave address, it will be on for 100ms per second; When the host records the slave address, it lights up for 900ms per second; The slave is on for 1 second every 2 seconds. After connection: LED is always on. Key: Input pin, internal pull down. This pin is connected to a high level for the master to clear the recorded slave address.