The ELM327 is a programmed microcontroller produced by ELM Electronics for translating the onboard 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