5pcs SPPC bluetooth Serial Adapter Module Wireless Serial Communication from Machine AT-05 Replace H

Features: ? bluetooth V3.0 + EDR bluetooth Class 2 Built-in PCB radio frequency antenna Support UART interface 3.3V power supply Operating Frequency Band:2.4GHz -2.48GHz unlicensed ISM band? bluetooth Specification: V2.1+EDR? ? More document click to download: ? Applications: ? 1: bluetooth printer 2: bluetooth POS machine 3: intelligent home control 4: bluetooth wireless data transmission ? Package Included: ? 5 x SPPC bluetooth Serial Adapter Module