This module Bluetooth 4.0 BLE (Bluetooth Low Energy) is a low-power module that incorporates the CC2540 transceiver chip from Texas Instruments. The chip integrates an RF GFSK transceiver 1Mbps and a microcontroller 8051 for better coverage and optimal data transmission. You have 40 channels available (with space channel of 2 MHz to avoid interference with nearby devices) among which 3 fixed and 37 autoadaptive. The module can operate in dual mode, bridge and direct drive.
Compatible with MCU as Arduino with which communicates via standard interface UART (TTL).
Supply voltage: 2.0 - 3.6 V
Frequency: 2402 - 2480 MHz
Adjusting transmission power: -23 - 4 dBm
Reception sensitivity gain: -93 dBm
Transmission Speed: 9.6 Kbps
Current in standby: 0.4 uA
Dimensions: 13.7 x 17.4