Flngr 009577F Temperature Sensor for Heaters — 3-Wire NTC 100K

Overview

The Flngr 009577F Temperature Sensor is a compact, plug‑in replacement designed for pool and spa heaters. It fits into standard sensor housings and aims to deliver steadier readings with reliable operation across compatible models. The design emphasizes a clean connection, snug fit, and resilience in typical heater bays.

Crafted to complement popular heater families, this sensor serves as a practical upgrade that may improve response time and consistency during heating cycles. While not OEM, it is engineered to align with OEM manufacturing expectations and offers a cost‑conscious option for maintenance tasks.

Why choose this sensor

• Plug‑in replacement compatible with models including 206A, 207A, 266A, 267A, 336A, 337A, 406A, 407A
• 3‑wire NTC 100K configuration supports standard temperature sensing ranges
• Helps address common heater symptoms such as uneven warmth or readings that drift from set values
• No tools required for installation; swaps in under a few minutes

What you get

• 1x brand-new 009577F Temperature Sensor that matches the original form factor
• Plug‑in connector designed for quick alignment and secure seating
• Materials selected for durability in typical heater environments

Quality, value, and compatibility

Although this is a non‑OEM part, it is made to meet OEM manufacturing requirements and undergoes internal testing. The result is a sensor that aims to deliver reliable performance at a more accessible price point compared with OEM options. Expect a fit that mirrors the function of the prior sensor and a simplified replacement process.

Installation guidance

• Ensure the heater is powered off before starting any work
• Remove the existing sensor and insert the 009577F into the same connector position
• Secure the connection and run a quick test to verify heating behavior

Real-world use cases

Techs and homeowners may encounter heating inconsistencies, delayed warm-up, or temperature readings that deviate from the target. The 009577F offers a practical path to restore regular operation without complex tools or extensive downtime.

After-sales support

We back the purchase with a money-back guarantee if you are not satisfied. Contact us through your preferred Amazon channel, and we will respond promptly with options.