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Simarine Tank Level and Voltage Module ST107

Our NSW Rep Westy takes us through some of the viewing features of the Simarine monitoring system via the Simarine App available for use with iOS and Android devices. A Polaris head unit has been installed in our 2019 Hilux Dual Cab which allows for Android Apps to be directly installed on the unit. The head unit is then WIFI linked to the Simarine in the canopy of the vehicle allowing all of the data to be shown in the Cab of the Hilux.


Fresh, Gray or Black Water, Petrol or Diesel  – keep your fluids under control with an ST107 module.

ST107 is an the ultimate digital module, that allows wide connection (and monitoring) possibilities. It enables monitoring up to;

  • 7 x Tank Levels
  • 3 x Battery Voltages
  • 4 x Temperature Sensors

Free SIMARINE Android and iOS Apps:

Simarine offers a free App to connect your PICO display to your smartphone via Wi-Fi. The Apps allow you to monitor all battery and tank data, upload history, edit and restore settings and even upgrade the firmware with new features.


ModelSimarine Tank Level and Voltage Module
SI-ST107Tank Level and Voltage Module
Power Source Voltage Range6-35V
Temperature Range-20 - +70°C
Power Consumption at 12V
Voltage Measuring Channels3
Resistive Measuring Channels4
Relay (monostable)
Maximum Operating Current1A
Maximum Common Input Voltage6 – 30V
Voltage Inputs
Range 0 – 75 V
Resolution1 mV
Accuracy± 0.2 %
Sampling Rate100ms
Resistance inputs
Range0 Ohm – 65 kOhm
Accuracy± 3.0%
Resistance inputs
Range0 Ohm - 65kOhm
ConnectivityUp to
Voltage Sensors (voltage drop/tank level)3
Resistive Inputs (tank level/temperature)4
Relay Common Input (COM)1
Relay Output Normally Open (NO)1
Relay Output Normally Closed (NC)1
SiCOM RJ9 Sockets2
Installation and Dimension
Dimensions (length x width x depth)110 x 70 x 30 mm
Battery ConnectionM 10 bolts