Mastertemp Stack Flue Sensor and Thermistor Replacement for Pool Heaters Models SR200 SR333 SR400

Stack flue sensor & heater thermistor compatible with Sta-, MasterTemp, Max-E- pool and spa heaters. Replaces part numbers 42002-0024S and 42001-0053S. Made of durable metal with rust-resistant material for easy installation and long-lasting use. Ensure power is off and wear gloves during replacement. Color: As shown Material: Metal Note: Slight variations in appearance may occur between batches, but functionality remains unaffected. Package includes: 1 42002-0024S Stack Flue Sensor 1 42001-0053S Thermistor Disclaimer: Color may vary slightly due to lighting or display settings. Measurement tolerance: +/- 1-3cm.