Peco Controls SP155-017 Sensor The Weil McLain 383-500-300 is

The Weil McLain 383-500-300 is an OEM-spec Return/Supply Water Sensor designed for precision temperature regulation within hydronic systems

Standard two-wire polarity insensitive leads simplify installation and integration with various field controllers

Advanced Insulation: High-temperature fiberglass lead insulation rated for 200°C protects against internal furnace heat

Reduced System Downtime: A direct-fit design allows for rapid field replacement during emergency service calls

Peco Controls SP155-017 Sensor The Weil McLain 383-500-300 isThe Peco Controls SP155 017 is a precision engineered 10K Ohm wired zone sensor designed for seamless integration with Trane VariTrac zoning, Tracer Summit building controls, and Voyager unitary climate systems. Built to original equipment manufacturer (OEM) standards, this thermistor based sensor serves as a high reliability replacement for BAYSENS017B and X1351060901 modules. It features a 10K Type 2 thermistor element that provides accurate