Description
Product Overview
The Generic Compressor Switch Sensor is engineered for automotive air‑conditioning systems and compressor pressure monitoring. Measuring a range of 150 – 300 PSI with an accuracy of ±3%, this sensor converts pressure changes into a clean electrical signal, enabling precise control of cooling cycles. Constructed from high‑grade polymer housing, the unit measures just 0.01 × 0.01 × 0.01 inches and weighs only 0.1 ounce, making it exceptionally lightweight and easy to mount in confined engine bays. The device carries the model identifiers LR012018, LR002652, and LR004079, and complies with FAN‑RC‑PARTS manufacturing standards for durability and consistent performance.
Usage
Designed for professional mechanics and DIY enthusiasts, this sensor excels in monitoring refrigerant pressure within vehicle AC systems, ensuring optimal cooling efficiency and preventing compressor damage. It is also suitable for broader automotive applications such as pressure‑sensitive safety switches and diagnostic tools. Installation requires connecting the sensor’s electrical output to the vehicle’s control module, after which real‑time pressure data can be displayed on the dashboard or logged for maintenance analysis. 
Why Choose Us
Choosing the Generic brand guarantees access to a product that has passed rigorous quality checks, reflected in its ranking among the top 50 replacement pressure switches on major marketplaces. Our sensor offers a blend of precision, compactness, and cost‑effectiveness that larger, branded alternatives often lack. Each unit is backed by a 12‑month warranty, and our technical support team provides detailed wiring diagrams and installation guides to ensure a hassle‑free setup.
Key Features
- Accurate pressure measurement from 150 – 300 PSI with ±3% tolerance
- Compact polymer housing (0.01 in³) for space‑constrained installations
- Electrical signal output compatible with standard automotive control modules
- Multiple model numbers (LR012018, LR002652, LR004079) for cross‑compatibility
- Lightweight design (0.1 oz) reduces load on mounting brackets
FAQ
What vehicles are compatible with this sensor?
The sensor fits most passenger cars and light trucks that use a pressure range of 150‑300 PSI for AC or compressor systems. Check your vehicle’s service manual for exact specifications.
How do I connect the sensor to my vehicle’s control unit?
Connect the sensor’s two‑wire electrical output to the designated pressure input terminals on the ECU or AC control module. Refer to the wiring diagram provided in the packaging for pin‑out details.
Is calibration required after installation?
Factory calibration is set to ±3% accuracy. For critical applications, a post‑install calibration using a certified pressure gauge is recommended to verify performance.
Can this sensor be used in non‑automotive applications?
Yes, the sensor’s pressure range and electrical output make it suitable for small‑scale industrial equipment, HVAC systems, and laboratory test rigs where precise pressure monitoring is needed.
What warranty does the sensor include?
All units come with a 12‑month limited warranty covering manufacturing defects. Contact our support team with the purchase receipt for warranty service.




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