Product Review

Introduction
This Bluetooth 4.0 HM-10 Master Slave Module is a most complete and convenient one that supports stable Bluetooth data transmission, remote control, and data acquisition. Both master and slave are included in one. With the 662K regulator chip, it works under 3.3V and 5V. You can change its name, baud rate, match password and other parameters on-demand by AT instructions. It applies on Android and iOS via the serial assistants BleSerialPort and LightBlue respectively.
For detailed operations, refer to: http://wiki.sunfounder.cc/index.php?title=Bluetooth_4.0_HM-10_Master_Slave_Module

Specifications
Bluetooth Protocol: Bluetooth Specification V4.0 BLE
  USB Protocol: USB V2.0
Operating Frequency: 2.4GHz ISM band
  Modulation Mode: GFSK (Gaussian Frequency Shift Keying)
  Transmitting Power: ≤4dBm
  Sensitivity: ≤-84dBm at 0.1% BER
  Transmission Rate: 6 kbps (asynchronous & synchronous)
Security Feature: Authentication and encryption
  Support Service: Central & Peripheral UUID FFE0, FFE1
  Power Supply: 3.3V-5V
Operating Temperature: -5 - +65 Centigrade
  Dimensions: 27 x 13 x 2.2 mm.

Application
Industrial remote control, remote sensing
  POS system, and Bluetooth keyboard, mouse, and joystick
  Automobile testing equipment
  Portable, battery-powered medical equipment
  Automation data acquisition
  Bluetooth remote control toys
  Wireless LED display system
  Bluetooth printer
  Smart Home and Industrial Control