Product Review

If you need to use iphone or ipad to control your arduino project, sh-hc-08 4.0 ble slave module with 6pin baseboard may be a good choice.
Fully compatible with ios7.0 or later and iPhone 4s / 5 / 5s 6 / 6s.
Also compatible with Android 4.3 or later.

Please note:
if the version of the Android os is less than 4.3. it is not compatible.
This module only supports bluetooth 4.0 ble mode. Not compatible with any classic Bluetooth 2.0 device

About UUID:
Service uuid : FFE0
Write,Read, Notify char uuid: FFE1


Features:
1,Core module uses SH-HC-08, leads from the module interface includes VCC, GND, TXD, RXD, LED status output pin.
2, led indicate Bluetooth connection status, flashing Bluetooth connectivity, lit the Bluetooth connection and open a port Backplane
3, 3.3V LDO input voltage 3.6 ~6V, the input voltage to prohibit more than 7V!
4, the interface level 3.3V, can be directly connected the various SCM (51, AVR, PIC, ARM, MSP430, etc.), the 5V MCU also can be connected directly.
5, open to the effective distance of 10 meters, over 10 meters is also possible, but not of this the quality of the connection of the distance do to ensure
6, after the pair when full-duplex serial port to use, do not need to know anything about the Bluetooth protocol, but only supports 8 data bits, 1 stop bit, no parity communication format, which is the most commonly used communication format does not support other formats .
7, compact (3.57cm * 1.52cm), the factory chip production to ensure the placement quality. And sets of transparent heat shrink tubing, dust and beautiful, and anti-static

How to Test it:

1, Send "AT" will return " OK" via serial port.
2, DSD TECH offers the free software "DSD TECH Bluetooth" which you can find in appstore and google play.