Bluetooth is a standard for the wireless connection of mobile devices over short distances. It is treated as complementary to the wireless LAN and is evolved and modernized continuously by the Bluetooth Special Interest Group (SIG). Bluetooth does operate in the 2.4GHz ISM band, which is available in almost all countries. The typical range of Bluetooth is between 10 and 50 meters.
Ever since the Bluetooth version 4.0 release, in which Bluetooth Low Energy (BLE) was introduced, the technology is especially interesting for applications in the Internet of Things (IoT). The massively reduced power consumption allows wireless "things" to send and receive data for several years without changing the battery.
Bluetooth has received various names additives throughout its developments and versions that describe the respective functionalities.
BR means Basic Rate. The suffix +EDR means Enhanced Data Rate (V2.0), +HS means High Speed (V3.0). Data rates were significantly increased with each version and can reach up to 2Mbps. Bluetooth BR/EDR modules are mainly used in data-intensive applications, for example headphones and headsets, printers, automobiles, etc.
From version 4.0 Bluetooth became especially interesting for the Internet of Things, as the new standard Bluetooth Low Energy (+BLE) was introduced. The benefits of BLE are lowered production costs and a 10 to 100 times lower power consumption which makes it possible for a BLE module to operate for several years with only one coin battery.
Bluetooth Low Energy is particularly suitable for applications that transmit small amounts of data and have low energy consumption such as Remote controls, wireless keyboards, car keys and sensors.
Dual Mode devices can simultaneously connect with both BR/EDR and with BLE devices and thus cover the entire Bluetooth range. They are suitable for applications where multiple Bluetooth devices are used with different standards. Typically Dual Mode modules are used for computers, tablets, smart phones and gateways.
BlueMod+S The single mode module is designed to connect ultra low power wireless sensors and peripherals to Bluetooth v4.0/v4.1-equipped smartphones, tablets, and PCs. The small form factor (17x10x2.6 mm) Bluetooth Smart module has a range of up to 50m. The module is Bluetooth 4.1, CE, FCC, IC and KCC qualified. BlueMod+S is a Bluetooth solution for smartphone connectivity and cable replacement applications with low energy...