The HM-10 Bluetooth module combines the powerful and programmable Texas Instruments CC2541 Chipset with the required components to start right away with your BLE development. The module offers an on-board voltage regulator and is TTL-level and 5 V tolerant. The Bluetooth-SoC can be accessed via UART interface and supports AT-Commands for setup. It supports full Bluetooth 4.0 standard and can be used for your Arduino or microcontroller to Android or iOS communication projects. This module can be used to replace HC-05, HC-06 and HC-07 devices. This module can also be configured and used as an iBeacon used with Apple devices.

This HM-10 BLE Bluetooth Module with TTL - Clone Version with BLE 4.0 support, Internal with logic level conversion circuit. No external 5V level to turn into a 3.3V level Power input with anti-anti-circuit. Avoid accidental power plug reversed.

Generally, users are using HC-05 Bluetooth module but it doesn't support with iPhone but ble 4.0 is perfectly work with iPhone also. Supported devices are  IPHONE 4s, 5, 5s or later and almost all Android Device.

Features:

• BT Version: Bluetooth Specification V4.0 BLE
• Send and receive no bytes limit.
• RF Power: -23dbm, -6dbm, 0dbm, 6dbm, can modify through AT Command AT+POWE.
• Speed : Asynchronous - 2.1Mbps(Max) / 160 kbps, Synchronous - 1Mbps/1Mbps(Max)
• Long range: Open space have 100 Meters with iphone4s
• Power: In sleep mode 400uA~1 .5mA, Active mode 8.5mA.
• Interface: Dual USB 2-Port
• support Central and Peripheral mode switch, modify by AT commander
• UART interface and with baud rate setup function

Specifications:

Package Includes:

• 1 x HM-10 BLE Bluetooth Module 

Tutorial Link : 

• How to Use Bluetooth 4.0 HM10