Seat Belt Buckle Sensing Series - Hall

Roll Over to Zoom

The sensor detects whether the seat belt buckle is latched or unlatched, allowing the passenger safety system to determine the optimum airbag deployment. It is also used as an input to the electronic park brake and the unbuckled warning system.



  • Vehicle occupant safety systems
automotive-sensor-customLittelfuse vehicle sensors are designed for customer-specific applications and packaging. To learn more, contact Littelfuse.

Access specifications, certifications, check availability and order parts below

Catalog #Supply Voltage (V)Output TypeOperating Temperature (°C)
Hall12 (Battery)6mA, 14.5mA (Bi-State/Digital)-40 to +85

  • Robust construction makes this sensor well suited to harsh environments

  • Non-contact, Hall Effect technology

  • Magnetically operated position sensor

  • Integrated in seat belt buckle

  • Two logic output states (low and high)

  • Operates when the thorn in the seat belt buckle moves from an unlatched to a latched position

  • Choice of cable length and clips

  • Choice of connector and terminals

  • Ability to customize logic output states to customer needs

To request product environmental information, please complete the Product Environmental Information Request Form.