Product Features :
1: The factory chip production , stable and reliable quality
2: Power anti-reverse , reverse power does not work
3 : Input voltage 3.6 ~ 6V, must not exceed 7V! !
4: common variety of models can be installed Bluetooth module , such as HC05, HC06, HC07, BC04 , or other compatible Bluetooth module pin definitions
5: The pin-outs include TXD, RXD, STATE ( if any ), KEY ( if any ) common pin , easy to use
6 : Size : 1.52 * 3.57 (cm)