Serial Bluetooth Low Energy 4.0 BLE Module Utilizes a HM10 module to provide your Arduino with an easy to use wireless link between your Arduino and any compatible iOS 6 or Android (4.3+) device. It works by simulating a UART device beneath the surface sending data back and forth between the devices letting you decide what data to send and what to do with it on either end of the connection. The HM10 Bluetooth module supports the Bluetooth 4.0 protocol which not only supports Android mobile but also supports iOS system. This module is designed by using the Texas Instruments CC2541 Bluetooth low energy (BLE) System on Chip (SoC). Features Power Supply: 3.3V to 5V DC (6V MAX) IC: TI CC2541 Bluetooth Protocol: Bluetooth Specification V4.0 BLE 2.4GHz ISM band frequency Modulation: GFSK (Gaussian Frequency Shift Keying) Transmission Rate: 6K Bytes / sec (asynchronous & synchronous) Default Baud Rate: 9600 8n1 RF Power: 23dbm 6dbm 0dbm 6dbm (modify through AT Command AT+POWER) Range up to 60 meters Supporting Service: Central & Peripheral UUID FFE0 FFE1 Set as slave or master. Use AT command set the baudrate. Requires up to 50mA Ultralow standby power consumption 90uA~400uA Built in PCB antenna Default Pin Code: 000000 Default Name: HMSoft Working Temperature:–5C to +65C Size: 43 x 16mm