1: factory SMT production, the quality is stable and reliable
2: power meter protector against fraud, then reverse power doesn't work
3: input voltage of 3.6 ~ 6 v, banned more than 7 v!!!!!
4: can be installed common various types bluetooth module, such as HC05, HC06, HC07, BC05 or other pin definition compatible bluetooth module
5: eduction foot including TXD, RXD, STATE (if any), KEY (if any) commonly used pin, convenient use
6: size: 1.52 * 3.57 (cm)
10x Bluetooth Serial Transceiver Module Base Board