The ELM327 is a programmed microcontroller produced by ELM Electronics for translating the on-board diagnostics (OBD) interface found in most modern cars. Data may include Fuel and Engine diagnostic information.
Technical Specifications
Operating frequency band: 2.4Hz - 2.84Hz unlicensed ISM band
Bluetooth specification: V2.1+EDR
Output power class: Class 2
Operating voltage: 3.3V
Storage temperature: -65°C to + 150°C
Ambient temperature with power applied: -40°C to +85°C
Rated voltage: 12V
Rated current: 30mA
The voltage on VDD with respect to VSS: 0 to +7.5V