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Note: Teltonika does not provide any additional equipment like panic
buttons, door sensors or others.
Fuel Tank sensors for FM3622
A fuel tank level sensor exists in most cars, which shows the approximate fuel level in the
driver’s indicator panel. It is possible to connect Analog input to FM3622 (if sensor returns
analogue signal proportional to fuel level). Figure 10 shows the connection scheme to the
FM3622 and fuel tank sensor through Analog input 1. After the connection to the tank fuel level
sensor, calibration is needed. Calibration is needed because most fuel tank sensors are not
linear. Calibration is performed by measuring voltage dependence on volume of fuel in tank.
Figure 11. Fuel Tank sensor connection
Alarm buttons, door sensors, etc.
Alarm buttons, door sensors, ignition, etc. return two states: high or low voltage. Digital
inputs are used to read this information. Figure below shows how to connect alarm button, door
sensor, etc.
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