This is a Bluetooth 4.0 LE module with 4pin base board that can support iOS device(iphone and ipad) But does not support the version is lower than the android 4.3 phone(it don't support classic bluetooth 2.0 spp features) The core module is HM-10 Base board from DSD TECH About APP We provide a free app for this module for you to test and use. Search for "DSD TECH Bluetooth", which you can find in appstore and google play. Through the AT command, you can set this bluetooth module to the master mode can also be set to slave mode, even in iBeacon way work .it also Supports Apple Notification Center Service (ANCS) How to Enable Apple Notification Center Service (ANCS) ANCS function 1.1 Please read apple notification ducument first 1.2 Send AT+TYPE3 command change to AUTH and BOND mode. 1.3 Send AT+ANCS1 command to open ANCS. 1.4 Send AT+PASS[para1] command to set passcode. Default passcode is "000000" 1.5 Send AT+RESET to restart module. Now you can use LightBlue to scan and made a connect with module. iOS will ask you input passcode. please input your passcode value. If all is okay, you should receive AT+ANCS[para1] command from module UART. About HM-10 Module Core module is the original HM-10 module, not fake. DSD TECH brand guarantees and we accept refund without any excuse. Package List: 1 * DSD TECH HM-10 LE Module for Arduino 1 * 4PIN Dupont Cable WARRANTY We back this item with ONE YEAR WARRANTY. If you meet any question, please contact us, we will fix your issue within 24 hours.

DSD TECH back this Bluetooth 4.0 Master and Slave 2-in-1 module with ONE Year WARRANTY. If you meet any question, please contact us, we will fix your issue within 24 hours. Working voltage 3.6 V to 6V,Default rate of 9600.There are 4PIN dupont cable in the package. DSD TECH 4 PIN base Board, leads to VCC, GND, TX, RX. You can be very convenient to connect to your arduino project or other DIY project. Bluetooth master and slave module, Through the AT command, you can set this bluetooth module to the master mode can also be set to slave mode, even in iBeacon way work . .it also Supports Apple Notification Center Service (ANCS). Original HM-10 module, DSD TECH brand guarantees and we accept refund without any excuse.