Smith 100109522 Pressure Switch is a critical safety component designed for precise pressure monitoring in high-efficiency boilers

this 124-inch heater is a common specification for Bohn

This model is the primary direct replacement for I-31-1 and 23739 models

Key Benefits Precise Thermal Control: Calibrated for 120-181°F

duct static pressure monitoring

Siemens Building Technology 536-778 Sensor R-134A Smith 100109522 Pressure Switch isThe Siemens Building Technology 536 778 is a high precision outside air temperature sensor engineered for demanding building automation and HVAC control strategies. Utilizing a 100k Ohm NTC thermistor sensing element, this unit provides a highly stable resistance output that corresponds to ambient thermal changes, ensuring your building controller receives accurate data for outdoor reset and ventilation logic. Housed in a ruggedized metal enclosure,