Thermo King Wireless Door Switch for Refrigeration 401143
Official OEM Thermo King parts catalog entry for the Thermo King Wireless Door Switch 401143, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Wireless Door Switch 401143 delivers OEM-grade door-status monitoring for Thermo King refrigeration systems, enabling precise door-open detection on reefer trailers and refrigerated trucks to protect cargo temperature and reduce runtime.
The Wireless Door Switch 401143 is a magnetic sensor that communicates door position wirelessly to compatible Thermo King control modules. It supports fuel-efficient cooling strategies by reducing unnecessary compressor runtime when trailer doors remain open and improves fleet uptime through reliable, maintenance-friendly installation.
- Wireless 315 MHz Communication – Enables installation without running long wire harnesses through the trailer, reducing labor and failure points.
- Rugged Temperature Range – Operates across extreme reefer environments to maintain reliable door detection in cold chain and ambient applications.
- Magnetic Contact Design – Provides precise open/close sensing with simple magnet and switch alignment for long-term accuracy.
- Fleet Integration – Integrates with Thermo King SensorLINK and CargoLink systems and common control modules to feed door events into unit logic and logging.
- Fuel-Efficient Impact – Minimizes unnecessary compressor operation during door openings, supporting lower fuel consumption and reduced emissions.
- Service-Friendly Installation – Uses standard mounting brackets and a protected antenna for reliable signal propagation in trailer environments.
Product Details
| Part Number | 401143 |
| Product | Thermo King Wireless Door Switch |
| Function | Wireless door open/close sensor for refrigerated trailers and truck units |
| Frequency | 315 MHz |
| Operating Range | Wireless range suitable for typical trailer installations (field performance depends on antenna routing and environment) |
| Temperature Capability | Designed for operation in extreme cold-chain environments |
| System Integration | Works with Thermo King control modules and SensorLINK/CargoLink architectures where a wireless door sensor interface is supported |
Efficiency & Sustainability
The Wireless Door Switch 401143 contributes to fuel-efficient cooling by allowing Thermo King refrigeration logic to respond to door-open events and limit unnecessary compressor runtime. This supports reduced fuel consumption and lower emissions for transport refrigeration fleets operating Smart Reefer SR-4 and other Thermo King control platforms. Use of wireless sensors also reduces material waste and installation time compared with long hardwired runs.
Installation & Maintenance Tips
Install the magnet on the moving door edge and the switch on the stationary frame with correct alignment. Maintain a consistent gap and axis alignment (manufacturing guidelines commonly recommend up to approximately 0.75 inch spacing) and protect the sensor and antenna from direct impact. Use OEM-compatible wiring harnesses where a wired interface is required and inspect the sensor during routine preventive maintenance intervals to ensure reliable operation.
Real-World Applications
The Wireless Door Switch 401143 is ideal for refrigerated trailers, reefers on truck chassis, multi-temperature trailer bodies, and any transport refrigeration application requiring door-event logging, automatic unit shutdown/restart on door activity, or enhanced cargo protection. Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
View all Thermo King PartsCustomer Assurance
Backed by Thermo King engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting reliability and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
Check Parts Warranty
For current warranty eligibility or OEM replacement coverage, contact us for warranty information: https://www.trailerservicesofwesttexas.com/contact.
Frequently Asked Questions
Q: Is the Wireless Door Switch 401143 compatible with Thermo King Precedent units?
A: Compatibility exists when the unit control supports wireless door-sensor inputs; many Precedent-series systems and Smart Reefer SR-4 platforms accept door-event inputs via SensorLINK or CargoLink interfaces.
Q: How does the sensor reduce fuel use?
A: The sensor signals door-open events to the refrigeration control, allowing unit logic to minimize compressor run time while the door is open and resume normal operation when the door closes, improving overall fuel efficiency.
Q: What environmental conditions does the switch tolerate?
A: The Wireless Door Switch 401143 is designed for the temperature extremes encountered in transport refrigeration and maintains reliable operation in cold-chain environments.
Q: Who installs and services this part in West Texas?
A: Certified technicians at West Texas Thermo King provide installation, integration, and service across Amarillo, Lubbock, Odessa, and the Permian Basin.
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.
Official OEM Thermo King parts catalog entry for the Thermo King Wireless Door Switch 401143, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Wireless Door Switch 401143 delivers OEM-grade door-status monitoring for Thermo King refrigeration systems, enabling precise door-open detection on reefer trailers and refrigerated trucks to protect cargo temperature and reduce runtime.
The Wireless Door Switch 401143 is a magnetic sensor that communicates door position wirelessly to compatible Thermo King control modules. It supports fuel-efficient cooling strategies by reducing unnecessary compressor runtime when trailer doors remain open and improves fleet uptime through reliable, maintenance-friendly installation.
- Wireless 315 MHz Communication – Enables installation without running long wire harnesses through the trailer, reducing labor and failure points.
- Rugged Temperature Range – Operates across extreme reefer environments to maintain reliable door detection in cold chain and ambient applications.
- Magnetic Contact Design – Provides precise open/close sensing with simple magnet and switch alignment for long-term accuracy.
- Fleet Integration – Integrates with Thermo King SensorLINK and CargoLink systems and common control modules to feed door events into unit logic and logging.
- Fuel-Efficient Impact – Minimizes unnecessary compressor operation during door openings, supporting lower fuel consumption and reduced emissions.
- Service-Friendly Installation – Uses standard mounting brackets and a protected antenna for reliable signal propagation in trailer environments.
Product Details
| Part Number | 401143 |
| Product | Thermo King Wireless Door Switch |
| Function | Wireless door open/close sensor for refrigerated trailers and truck units |
| Frequency | 315 MHz |
| Operating Range | Wireless range suitable for typical trailer installations (field performance depends on antenna routing and environment) |
| Temperature Capability | Designed for operation in extreme cold-chain environments |
| System Integration | Works with Thermo King control modules and SensorLINK/CargoLink architectures where a wireless door sensor interface is supported |
Efficiency & Sustainability
The Wireless Door Switch 401143 contributes to fuel-efficient cooling by allowing Thermo King refrigeration logic to respond to door-open events and limit unnecessary compressor runtime. This supports reduced fuel consumption and lower emissions for transport refrigeration fleets operating Smart Reefer SR-4 and other Thermo King control platforms. Use of wireless sensors also reduces material waste and installation time compared with long hardwired runs.
Installation & Maintenance Tips
Install the magnet on the moving door edge and the switch on the stationary frame with correct alignment. Maintain a consistent gap and axis alignment (manufacturing guidelines commonly recommend up to approximately 0.75 inch spacing) and protect the sensor and antenna from direct impact. Use OEM-compatible wiring harnesses where a wired interface is required and inspect the sensor during routine preventive maintenance intervals to ensure reliable operation.
Real-World Applications
The Wireless Door Switch 401143 is ideal for refrigerated trailers, reefers on truck chassis, multi-temperature trailer bodies, and any transport refrigeration application requiring door-event logging, automatic unit shutdown/restart on door activity, or enhanced cargo protection. Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
View all Thermo King PartsCustomer Assurance
Backed by Thermo King engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting reliability and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
Check Parts Warranty
For current warranty eligibility or OEM replacement coverage, contact us for warranty information: https://www.trailerservicesofwesttexas.com/contact.
Frequently Asked Questions
Q: Is the Wireless Door Switch 401143 compatible with Thermo King Precedent units?
A: Compatibility exists when the unit control supports wireless door-sensor inputs; many Precedent-series systems and Smart Reefer SR-4 platforms accept door-event inputs via SensorLINK or CargoLink interfaces.
Q: How does the sensor reduce fuel use?
A: The sensor signals door-open events to the refrigeration control, allowing unit logic to minimize compressor run time while the door is open and resume normal operation when the door closes, improving overall fuel efficiency.
Q: What environmental conditions does the switch tolerate?
A: The Wireless Door Switch 401143 is designed for the temperature extremes encountered in transport refrigeration and maintains reliable operation in cold-chain environments.
Q: Who installs and services this part in West Texas?
A: Certified technicians at West Texas Thermo King provide installation, integration, and service across Amarillo, Lubbock, Odessa, and the Permian Basin.
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.
