Bluetooth technology is a wireless standard technology that enables short-distance data exchange between fixed devices, mobile devices, and building personal area networks (using UHF radio waves in the ISM band of 2.4 to 2.485 GHz).

The Keyestudio HM-10 Bluetooth-4.0 V3 module is a master-slave machine. When use as the Host, it can send commands to the slave actively; when use as the Slave, it can only receive commands from the host.

The HM-10 Bluetooth module supports the Bluetooth 4.0 protocol, which not only supports Android mobile, but also supports iOS system. 

Technical Details

1) Bluetooth protocol: Bluetooth Specification V4.0 BLE

2) No byte limit in serial port Transceiving

3) In open environment, realize 100m ultra-distance communication with iphone4s

4) USB protocol: USB V2.0

5) Working frequency: 2.4GHz ISM band

6) Modulation method: GFSK(Gaussian Frequency Shift Keying)

7) Transmission power: -23dbm, -6dbm, 0dbm, 6dbm, can be modified by AT command.

8) Sensitivity: ≤-84dBm at 0.1% BER

9) Transmission rate: Asynchronous: 6K bytes ; Synchronous: 6k Bytes

10) Security feature: Authentication and encryption

11) Supporting service: Central & Peripheral UUID FFE0, FFE1

12) Power consumption: Auto sleep mode, stand by current 400uA~800uA, 8.5mA during transmission.

13) Power supply: 5V DC

14) Working temperature: –5 to +65 Centigrade