AR-PRO 520272 Air/Water/Solar Temperature Sensor with 20-Foot Cable – Pool & Spa Replacement

Meet the AR-PRO 520272 Temperature Sensor

The AR-PRO 520272 is designed to replace your original air, water, or solar temperature sensor in pool and spa systems. It features a generous 20-foot cable that helps you position sensors where they read most reliably, reducing cable strain and fitting into tight or awkward installations. With a 10k-ohm thermistor as its sensing element, this unit aims to provide stable temperature readings across a variety of pool environments, helping you manage your water and air temperature more smoothly.

Manufactured as an aftermarket alternative by CalPalmy, this sensor is built to meet or exceed OEM performance in-house testing. It’s offered at a more cost-conscious price point while maintaining a focus on durability and reliable operation in outdoor pool and spa settings.

Durability that can handle outdoor use

Premium, heavy-duty materials form the core of the AR-PRO 520272, designed to withstand the rigors of outdoor pool environments. In our internal testing, this construction showed a notable increase in life cycle, potentially extending service life by up to 50% compared with standard replacements under typical use. While results can vary by environment, many installers appreciate the added endurance in seasonal climates and high-traffic pools.

Compatibility, installation, and value

This replacement kit is crafted to fit a broad array of pool and spa control ecosystems. It is compatible with Easy Touch, Sun Touch, Pentair InterlliTouch, and Compool automatic control systems. It also fits Pentair Minimax Plus pool and spa heater groups, offering a versatile option for multi-brand setups. Because it’s an aftermarket part, CalPalmy notes that there is no affiliation with or endorsement from the original manufacturers; users should verify fit for their exact model before purchase.

• 10k-ohm thermistor for stable temperature sensing
• 20-foot cable for flexible sensor placement
• Premium, heavy-duty construction aimed at longer life
• OEM-style performance at a lower replacement cost

• Broad compatibility with Easy Touch, Sun Touch, InterlliTouch, and Compool systems
• Also fits Pentair Minimax Plus heater groups
• Long reach reduces the frequency of replacements due to cable tension
• Cost-effective alternative to OEM parts without compromising essential specs