Feature:

• Chip on board: CC2541
• Tested on 3V3
• Module enter into data transmission mode when it paired.
• Pull P00 to low to wake up the module from sleep mode, then module can accept data tranmission.
• serial data send need "/r/n"
• Power supply must use 3.3 or 3V for final products
• master module can only allow one slave module connect
• in room distance is 15-30 meters, max to 60 meters.
• Tranmission data speed is 1KB/s
• Do not support 2.0 or 3.0 bluetooth version.

Operating mode state current:

• Slave Transparent Mode Connected / Not Connected / Standby 0.8mA / 300uA / 1uA
• Slave Broadcast mode (IBeacon, sensor) Connection / Not connected / Standby 0.5mA / 300uA / 1uA
• Host Transmitted Mode Connect / Unconnected / Standby 20mA / 9mA / 1uA
• Host observer mode (Sensor) connected / not connected / standby 2.

Documents: 

• JDY-08 Reference
• JDY-08 Bluetooth

Dimension, Pin definition: