Sunkee 30ft Wireless Bluetooth RF Transceiver Module serial RS232 TTL HC-05 for arduino
Price 15.88 USD
CSR Bluetooth Chip Solution * Bluetooth Spec v2.0+EDR Compliant * Enhanced Data Rate (EDR) compliant with V2.0.E.2 of specification for both 2Mbps and 3Mbps modulation modes * Increadible samll size with 3.3V input, and RoHS Compliant * Support for 802.11Co-Existence