Description HM-10 and HM-11 series module use TI CC2541 chip, configure 256KB space, and support the AT command. Users can change the role (master, slave mode) and the serial port baud rate, equipment name, matching password and other parameters on-demand. It is very flexible to use. Features - The most complete, most convenient, and most stable data transmission, remote control, and data acquisition module. - Master-slave in one, transparent transmission, replacing serial port. - Remote control, transparent transmission, MCU is unnecessary. - Remote data acquisition, transparent transmission, MCU is unnecessary. Parameters - Protocol: Specification V4.0 BLE - USB Protocol: USB V2.0 - Operating Frequency: 2.4GHz band - Modulation Mode: GFSK (Gaussian Frequency Keying) - Transmitting Power: le;4dBm - Sensitivity: le;-84dBm at 0.1% BER - Transmission Rate: Asynchronous: 6 kbps - Synchronous: 6 kbps - Security Feature: Authentication and encryption - Support Service: Central Peripheral UUID FFE0, FFE1 - Power Supply: +3.3VDC 50mA - Operating Temperature: -5 - +65 Centigrade - Physical Dimension: 27mm x 13mm x 2.2 mm. Application - Industrial remote control, remote sensing - POS system, and keyboard, mouse, and joystick - Automobile testing equipment - Portable, battery-powered medical equipment - Automation data acquisition - toys - Wireless LED display system - printer - Smart Home and Industrial ControlPackage list: 1 * 4.0 HM-10 Master Slave Module for Xbee R3 Mega 2560 Nano