Mobile Surface Sentinel – Model 5436-10

The Mobile Surface Sentinel – Model 5436-10 provides accurate surface temperature and air temperature, in real-time, from a moving vehicle to an in-cab display unit.


  • Rapid environmental acclimation rate
  • Sensor-to-Display Bluetooth connectivity
  • Color LCD display
  • Fully sealed weatherproof design
  • Integrates with existing AVL systems
SKU: 5436-10 Categories: , ,


The Model 5436-10 Mobile Surface Sentinel is a precision instrument that provides accurate surface temperature and air temperature, in real-time, from a moving vehicle to an in-cab color LCD display. Its fully weatherproof design and rapid temperature response rates meet the demands of road weather management professionals. An audible alarm alerts the vehicle operator of freezing conditions. The Mobile Surface Sentinel sensor connects through a wireless connection to the Mobile Display Unit (MDU) for simple installation without the need to route wires.

The Mobile Surface Sentinel sensor connects to the Mobile Display Unit (MDU) via wireless Bluetooth for simple installation without the need to route wires from outside to inside the vehicle. Simply connect each unit to a vehicle power source. The sensor mounts outside the vehicle, pointed at the road surface. The MDU mounts inside the vehicle to display the road surface and air temperature as a number and a graph. The display uses a high resolution color LCD that is configured with an easy to navigate menu. A menu selectable RS-232 or RS-485 serial output is made available via a connector with screw terminals on the back of the MDU for easy integration into new or existing Automated Vehicle Location (AVL) units.


  • Measures both air temperature and surface temperature in real-time
  • Bluetooth connectivity to Mobile Display Unit (MDU) reduces installation time and cost associated with routing wires
  • Rapid air and surface temperature response time to allow faster maintenance decisions
  • Ability to calibrate the sensor in the field
  • User-adjustable temperature alert brings attention to the driver of freezing conditions
  • Numerical and graphical display of sensor data
  • RS-232 and RS-485 serial output standard from MDU allows for easy integration to AVL units
  • Ambient light sensor automatically adjusts brightness of MDU for day and night operation


  • Assists road weather professionals in determining chemical type and application rates for winter maintenance operations
  • Tool for thermal mapping when connected to on-board controllers or AVL
  • Provides a low cost way to fill in gaps between existing road weather stations (RWIS)
  • Alerts paint stripe crews that the road temperature is ready to start work


Mobile Surface Sentinel

Range 1.5 to 15 ft (0.5 to 4.5 m)
Angle 0 to 10° from vertical
Field of View 10°, 10.5 inch (27.7 cm) circle at 5.0 ft (1.5 m)
Surface Temperature Range -40° to 185°F (-40° to 85°C)
Surface Temperature Accuracy ±1° at 32°F otherwise ±2°F (±0.5°C at 0°C otherwise ±1°C)
Air Temperature Range -40° to 185°F (-40° to 85°C)
Air Temperature Accuracy 0.45°F (±0.25°C) Typical
Supply Voltage 9-30 VDC, Reverse Polarity Protected
Average Current Consumption 0.21 Watts, active mode; 0.05 Watts, standby mode (MDU off)
IR Sensor Emissivity 0.96
Sampling Period 100 ms, or 10 times per second
Data Reporting Period ½ second
Communications Bluetooth to MDU
Materials Hard Anodized Aluminum, Stainless Steel, Plastic
Power Cable 10 ft (3 m) standard, 105°C, PVC jacket, 18 AWG
Operating Environmental Temperature 40 to 185°F (-40 to 85°C)
Dimensions 5.5 x 2.3 x 3.6 inch (14.0 x 5.8 x 9.1 cm)
Weight 0.7 Lbs (0.30 kg)
Shipping Weight 2 Lbs (0.91 kg)


Mobile Display Unit (MDU)

LCD Resolution 240 x 320 pixels
Display update period ½ second typical, or as data arrives
Units of measure °F or °C (user-selectable)
Supply Voltage 9-30 VDC, Reverse Polarity Protected
Average Current Consumption 1.2 Watts
Buttons Capacitive Touch
Light Sensor Photo-diode
Communications Bluetooth, RS-232, RS-485
Materials Acetal Resin
Power Cable 10 ft (3 m) standard
Operating Temperature -4 to 140°F (-20 to 60°C)
Operating Humidity 10 to 90% Non-condensing
Dimensions 3.0 x 2.3 x 2.0 inch (7.6 x 5.7 x 5.1 cm) with ball head
Weight 0.7 Lbs (0.30 kg)
Shipping Weight 1 Lbs (0.45 kg)

Ordering Guide


Model 5436-10 Mobile Surface Sentinel with Mobile Display Unit kit
Model 5436-01 Mobile Display Unit (replacement)
Model 5436-12 Mobile Surface Sentinel (replacement)
Model 5100-00 MSS Additional Sensor Cable (per foot)
Model 5436-61 MDU Vehicle 12 VDC Power Receptacle Cable
Model 5436-65 USB to serial cable with bare leads
Model 5436-70 MSS Universal Mounting Bracket
Model 5436-71 MSS Mirror and Bumper Mount
Model 5436-73 MSS License Plate Mounting Bracket
Model 5436-80 MDU Universal Mounting Bracket
Model 5436-81 MDU Dash Mount
Model 5436-82 MDU 2 inch Gauge Mount





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