FMB910 Basic Accessories

Please order accessories separately as they are not included into device package.

Accessory and its description	Accessory connection schematic
Fuel tank sensors	Fuel sensor connection to FMB910 Basic
A fuel tank level sensor that indicates the approximate fuel level on the driver's indicator panel exists in most cars. If the sensor returns an analog signal proportional to fuel level it can be connected to FMB910 Basic Analog input. After connection to the tank fuel level sensor, a calibration is needed because most fuel tank sensors are not linear. Calibration is performed by measuring voltage values resulting from the volume of fuel in the tank.
Alarm buttons, door sensors etc.	Panic button connection to FMB910 Basic
Alarm buttons, door sensors, ignition, etc. have two output states: high or low. FMB910 Basic Digital inputs are used to detect these states.
Relays	Inverting relay connection to FMB910 Basic
In cases when the sensor output signal is negative, an additional relay has to be installed to convert the negative signal to positive.
Immobilizer relay	Immobilizer relay connection to FMB910 Basic output
When connected as shown on the right hand side, FMB910 Basic disables engine starter when output is ON.
Automotive relay	Automotive relay pinout
An ordinary automotive relay is used to invert input signal or to immobilize engine starter. Note that relays can be 12 V or 24 V capable.