Overheight detectors

Overheight detection for vehicles

Your Benefits

  • Reliable alarm signals – even in nasty weather conditions

The exact device specifications and performance data of the product may deviate from the information provided here, and depend on the application in which the product is being used and the relevant customer specifications.


Overheight detection for vehicles

The HISIC450 overheight detector monitors the height of vehicles – at tunnel entrances, low underpasses, or low bridges, for example. Reliable stop and alarm signals are activated when a vehicle infringes both photoelectric switches of the HISIC450 and this signal is then combined with traffic data (e. g., induction loop signal). Even overheight vehicles traveling at speeds of up to 100 km/h are reliably detected. Due to its large beam diameter and high signal reserve, the detector can even cope with difficult weather conditions, i.e., rain, snow, and dust clouds.

At a glance
  • Aluminum enclosure with anti-corrosion coating and high enclosure rating
  • Built-in lens heaters to prevent condensation or icing
  • Weather protection against snow, rain and dust clouds
  • Accessories (weather hood and mounting bracket) made of stainless steel
  • Sensitivity adjustment
  • Insensitive to ambient light

Spare parts


Service & Support

Technical overview

  • HISIC450 system

    HISIC450 system

    Measured valuesOverheight
    Measurement principlesDouble photoelectric switch
    Measuring distance
    ≤ 100 m
    For outdoor measurement
    Response time (t90)
    HISIC450-N250, HISIC450-P250≤ 500 µs
    HISIC450-R250≤ 10 ms
    Ambient temperature
    –25 °C ... +55 °C
    Electrical safetyCE
    Enclosure rating
    Digital outputs

    1 PNP output:
    200 mA
    Short-circuit-proof, only HISIC450-P250

    1 NPN output:
    200 mA
    Short-circuit-proof, only HISIC450-N250

    1 relay contact:
    750 mA, 120 W
    Electrically isolated, only HISIC450-R250

    Dimensions (W x H x D)
    60 mm x 126 mm x 105 mm (for details see dimensional drawings)
    Power supply
    VoltageHISIC450-R250 20 V AC/DC ... 250 V AC/DC, ± 10 %
    HISIC450-N250, HISIC450-P250 10 V DC ... 60 V DC, ± 10 %
    Protected against polarity
    Reversal, only HISIC450-N250 and HISIC450-P250
    Current consumptionHISIC450-N250, HISIC450-P250: ≤ 250 mA
    Power consumptionHISIC450-R250: ≤ 6 W
All technical data can be found accompanying the individual product