option: HC-05 6Pin board
Brand GCSUPERMARKET
Model ELECTRONIC MODULE

Check the listing for details. HC-05 06 Wireless Bluetooth RF Transceiver Module Serial RS232 TTL Base Board. Condition: New. Listed at 4.08 USD. Allows your device to both send or receive the TTL data via Bluetooth technology without connecting a serial cable to your computer. Compatible with bluetooth master module"、slave module"or master-slave(whole) module.

$3.26
$4.08