Caiman M


The Caiman M wide beam Stop+Motion radar detector is suited for lane discrimination over multiple lanes. It detects and tracks moving and stopped objects within the entire detection area delivering the following data: volume, occupancy, speed, vehicle presence, headway, gap and wrong way detection trigger.

Due to its forward firing position it offers a wide range of applications, detection points and mounting positions.

The Caiman M is available with two antennas suited for detection areas of 20 m up to 80 m resp. 160 m.



  • Wide beam over multiple lanes
  • Stop+Motion function (moving and stopped objects)
  • Accurate vehicle speed measurement
  • Data provided: Volume, occupancy, speed, vehicle presence, headway, gap, wrong way detection trigger
  • Multiple choice of detection points and mounting positions (e.g. mast arm, vertical pole)


  • Intersection application with stop bar detection, advanced detection, vehicle counting, calculation of estimated time of arrival (ETA) / dilemma zone detection
  • Traffic management and traffic data acquisition with detection of vehicle speed, counting and occupancy
  • Special applications such as wrong way driver detection, traffic jam detection


Due to its novel Stop+Motion function the Caiman M not only detects and tracks moving objects but also determines stopped objects. The sophisticated algorithm "remembers" static objects until they start moving again thus providing an additional presence detection.


Sideways mounting

Centered mounting

  • Only one radar necessary for the detection at one intersection arm
  • Simultaneous detection accross all lanes within the detection area
  • Detection within the entire detection area from the stop line to the detection threshold
    (20 m up to 80 m resp. 160 m from mounting point) or only in selected parts
  • 100 % independent of time of the day and light conditions (bright sunlight, shadow, dawn, night)



Caiman M36

Caiman M70

Number of lanes

4 (at stop line >=30 m)

6 (at stop line >=25 m)

Typical range

up to 135 m

up to 50 m

Sensor height

6 m

6 m

Vertical angle down to road



Horizontal angle








Caiman M36

Caiman M70


large distance to stop bar

large intersection / rather

straight road

short distance to stop bar

where Caiman M36 cannot

be applied

Covered area
(distance from pole)

typical 35 m up to 135 m

max. 20 m up to 160 m

typical 30 m up to 50 m

max. 20 m up to 80 m

Max. azimuth field of view

36° (+/-18°)

70° (+/-35°)

Ambient Temperature

-40 °C to +85 °C

-40 °C to +85 °C


330 g

295 g


110 mm x 99 mm (w x h)

95 mm x 85 mm (w x h)

Power Supply*

7 V DC to 32 V DC, 3.7 W

7 V DC to 32 V DC, 3.7 W

Frequency Band

24.0 GHz to 24.25 GHz

24.0 GHz to 24.25 GHz


RS485 half-duplex

RS485 half-duplex


8 pin plug binder series 712

(power, RS485)

8 pin plug binder series 712

(power, RS485)

* Measured at connector; min. voltage slew rate 500 V/s or max. voltage rise time 15 ms;
supply source impedance 0.5 Ohms.





For more information refer to:

Caiman I for interurban traffic management