The CC2541 is a readily available Bluetooth 4.0 module. This module is used for establishing wireless data communication. The module is designed by using the latest Texas Instruments CC2541 Bluetooth low energy (BLE) System on Chip (SoC).

Features & Specification:
BT Version: Bluetooth Specification V4.0 BLE
BLE chip - Bluetooth Low Energy consumption
Send and receive no bytes limit.
UART Serial Interface
Full-Speed USB Interface
Working frequency: 2.4GHz ISM band
Modulation method: GFSK(Gaussian Frequency Shift Keying)
Security: Authentication and encryption

Power: +2.5V~3.3VDC
The module is typically connected to +3.3V standard power supply.
HM-10 CC2541 is designed by BLE chip so it consumes very less power to function.
Power: Active state 8.5mA; Sleep state 50~200uA

The CC2541 is a power-optimized true system-on-chip (SoC) solution for both Bluetooth low energy and proprietary 2.4-GHz applications.
It enables robust network nodes to be built with low total bill-of-material costs.
CC2541 combines the excellent performance of a leading RF transceiver with an industry-standard enhanced 8051 MCU, in-system programmable flash memory, 8-KB RAM, and many other powerful supporting features and peripherals.
CC2541 is highly suited for systems where ultralow power consumption is required.
This is specified by various operating modes.
Short transition times between operating modes further enable low power consumption.