What is a sliding door contact switch?

A sliding door contact switch is an electromechanical device that detects the open/closed state of a sliding door through physical contact between a switch body mounted to the door frame and a mating actuator plate on the door. Sensing Technologies manufactures SPST/SPDT switches rated 5A @ 12VDC, IP67, -40°C to +85°C for van central locking, alarm integration and commercial vehicle applications. IATF 16949:2016 certified, Mumbai.

What is the difference between SPST and SPDT configurations?

SPST switches have two terminals and either open or close a single circuit. SPDT switches have three terminals (common, NO, NC) and can switch two circuits simultaneously, enabling dual-function integration such as door-ajar lamps and alarm signals from one switch. SPDT is commonly specified for diagnostic redundancy per ISO 26262 ASIL requirements.

How does the IP67 rating apply to door switches?

IP67 per IEC 60529 means complete dust protection and temporary immersion up to 1 m for 30 minutes. For exterior door-frame switches it ensures reliable operation through pressure washing, monsoon exposure and road spray, maintaining contact resistance below 50 mΩ after environmental exposure.

What contact rating is required for central locking motors?

Automotive door lock actuators draw 3–4 A inrush at 12VDC and 1–2 A steady state. A 5A @ 12VDC contact rating provides margin to prevent welding or arcing on switching transients. AgCdO or AgNi contact materials sustain 100,000+ cycles. European OEMs typically specify 5 A minimum per LV 124.

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IATF 16949:2016

IATF 16949:2016 Certified

Sliding Door Contact Switches

Precision contact switches for van central locking, alarm systems, and sliding door security applications. IP67-rated switches engineered for commercial vehicle environments with proven field reliability.

Key Applications:

Van central locking systems
Sliding door alarm integration
Commercial vehicle security systems
Door ajar warning systems

Automotive sliding door contact switch for van central locking and alarm systems

Technical Excellence:

Temperature Range

-40°C to +85°C

Contact Rating

5A @ 12VDC

Protection

IP67 Rating

Sliding Door Switch Applications

Engineered for commercial van security, central locking, and alarm integration requiring reliable door position sensing.

Van Central Locking Systems

Reliable door position detection for power sliding door actuators and central locking motor integration in commercial vans and light commercial vehicles.

Alarm System Integration

Secure door status monitoring for aftermarket and OEM alarm systems, providing open/closed detection for perimeter security monitoring.

Door Ajar Warning

Precision contact sensing for dashboard warning indicators and BCM integration, alerting drivers to incompletely closed sliding doors.

Fleet Vehicle Security

Robust switching for fleet management telematics, enabling remote door status monitoring and unauthorized access detection.

Switch Technology & Technical Specifications

Precision contact switches designed for commercial vehicle sliding door applications with automotive-grade reliability and environmental resistance.

-40°C to +85°C

Temperature Range

Commercial vehicle operation

100%

Testing

Complete production validation

IATF 16949

Certification

Automotive quality standards

Advanced Contact Switch Capabilities

Switch Technology

SPST / SPDT Configurations

Flexible switching options for alarm and locking applications
Normally Open / Closed

Configurable contact states for diverse integration requirements

Contact Performance

5A @ 12VDC Rating

Sufficient current capacity for actuator control circuits
Low Contact Resistance

Reliable signal integrity for ECU and BCM inputs

Robust Construction

ABS & Metal Housing

Impact-resistant materials for door frame mounting
Mounting Plate Design

Two-piece construction for door and frame installation

Installation & Integration

Wire Connection Options

Solder terminal or connector variants for OEM integration
IP67 Ingress Protection

Dust and water resistance for exterior door applications

Technical Specifications

Parameter	Specification
Operating Temperature	-40°C to +85°C
Contact Configuration	SPST / SPDT
Contact Type	Normally Open / Normally Closed
Current Rating	5A @ 12VDC
Protection Rating	IP67
Housing Material	ABS plastic and metal contacts
Mounting Style	Door frame surface mount with mating plate
Typical Applications	Vans, trucks, commercial vehicles
Connection Type	Solder terminals / wire leads
Customization	Per customer request

Knowledge Base

Frequently Asked Questions

Engineering answers to the questions our customers ask most often.

A sliding door contact switch is an electromechanical device that detects the open/closed state of a sliding door through physical contact between mating surfaces. The switch consists of two components: a switch body mounted to the door frame and a mating actuator plate mounted to the door itself. When the door closes, the actuator engages the switch body, completing (or breaking) an electrical circuit that signals the door position to the vehicle's central locking system, alarm ECU, or body control module. Sensing Technologies manufactures SPST and SPDT contact switches rated at 5A @ 12VDC, IP67 protection, -40°C to +85°C operation, for van central locking, alarm integration, and commercial vehicle applications. IATF 16949:2016 certified, Mumbai.

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