5.5K Copper AC Temperature Sensor – Wall Air Conditioner Probe

High-Precision 5.5K Copper Head Temperature Sensor for Wall Air Conditioners

Keep your wall-mounted air conditioner running at peak performance with this high-precision 5.5K copper head temperature sensor. Designed as a direct replacement for Chigo and Mitsubishi wall AC units, this sensor ensures accurate temperature readings for consistent, efficient climate control in your home or office.

Key Features

• 100% Brand New & High Quality – Fresh replacement part, ready to install right out of the box
• Copper Probe Head – Superior thermal conductivity for fast, accurate temperature detection
• High Precision 5.5K Resistance – Engineered for precise readings to maintain optimal AC performance
• Compatible with Chigo & Mitsubishi wall-mounted air conditioner units
• Cable Length: 48 cm – Generous reach for flexible installation
• Insertion Width: 1.3 cm – Designed for a secure, snug fit in compatible units
• Durable Construction – Built to withstand the demands of continuous AC operation

Specifications

• Material: Copper
• Resistance: 5.5K
• Cable Length: 48 cm
• Insertion Width: 1.3 cm
• Compatible Models: Chigo, Mitsubishi wall AC units
• Package Includes: 1 × Temperature Sensor
• Made in Mainland China

Why Replace Your AC Temperature Sensor?

A faulty or worn temperature sensor can cause your air conditioner to short-cycle, fail to cool properly, or run inefficiently — leading to higher energy bills and reduced comfort. Swapping in a fresh, accurate sensor is a fast, cost-effective fix that restores your unit's performance without a costly service call.

For more information on how air conditioners work and energy-efficient cooling practices, visit the U.S. Department of Energy – Air Conditioning Guide.

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Please note: Colors in product photos may vary slightly depending on your monitor settings. Due to manual measurement, minor dimensional variations are normal.

Frequently Asked Questions

Q: Which air conditioner models is this 5.5K copper temperature sensor compatible with?

A: This temperature sensor is designed as a replacement for Chigo and Mitsubishi wall-mounted air conditioner units that use a 5.5K resistance sensor with a copper probe head. Please verify your unit's sensor specifications (resistance value and connector type) before purchasing to ensure compatibility.

Q: What does the 5.5K resistance rating mean for a temperature sensor?

A: The "5.5K" refers to the thermistor resistance value of the sensor — 5,500 ohms at a reference temperature. This determines how the sensor responds to temperature changes and must match your AC unit's control board specifications for accurate operation.

Q: How difficult is it to install this replacement AC temperature sensor?

A: Installation is generally straightforward — the sensor plugs into the existing connector on your AC control board and clips into the evaporator fins. The 48 cm cable provides enough reach for most standard wall unit configurations. If you are not comfortable working with electrical appliances, we recommend consulting a qualified HVAC technician.

Q: Does this sensor come with any other accessories or a battery?

A: The package includes 1 × Temperature Sensor only. No additional tools or batteries are required for installation.