Product parameters:
1. Power anti-reverse , reverse power does not work
2. Input voltage 3.6 ~ 6V, must not exceed 7V
3. Common variety of models can be installed Bluetooth module , such as HC05, HC06, HC
07, BC04 , or other compatible Bluetooth module pin definitions
4. The pin-outs include TXD, RXD, STATE ( if any ), KEY ( if any ) common pin , easy to use
5. Size : 37.3 * 15.5(mm)