• Interface: VCC, GND, TXD, RXD(reserve LED status output pin, and MCU can judge the Bluetooth connection state through it)
• 3.3V LDO
  
• Input voltage: 3.6V - 6V (never over 7V)
  
• Input current: 30mA (unpaired) 10mA (paired)
  
• Interface level: 3.3V (you can directly connect a variety of SCM 51, AVR, PIC, ARM, MSP430, etc. 5V microcontroller can also be directly connected without MAX232)
  
• Effective distance: 10M (open area)
  
• Communication format: 8 data bits / 1 stop bit / without parity
  
• You can set the baud rate, name and pair password by AT commands when there is no Bluetooth connection
  
• This module is slave, it can be paired with a computer, Bluetooth master, mobile phone, PDA, PSP and so on
  
• Size: 3.57 x 1.52cm
  

 Note: This module does not suitable for IOS system.