the 3Z1B adapter kit comes complete with the terminal lug

Screw Terminal Secondary: Provides high-integrity connections for 18-gauge thermostat wire to prevent voltage drops

meaning it will automatically close the circuit once the temperature cools to 200°F

Engineered as the direct replacement for the legacy J10-809

ensuring stability in residential and light commercial hydronic loops

Carrier VSACC0400 Temp Sensor the 3Z1B adapter kit comesThe Carrier VSACC0400 is a high precision outdoor temperature sensor designed to provide real time ambient data to your HVAC control system. As the authorized direct replacement for P474 0400, this thermistor based component is essential for optimizing heat pump balance point settings and enabling dual fuel logic in residential and commercial applications. Engineered for durability, the 10k ohm sensor housing is weather resistant and ensures the