Johnson Control F61MB-1C Mechanical Liquid Flow Switch

Johnson Controls F61MB‑1C is a paddle‑type air flow switch designed to monitor airflow in HVAC duct systems and activate or deactivate equipment when air movement reaches a specified velocity. Built for reliability in commercial and industrial applications, the F61MB‑1C uses a durable stainless‑steel paddle and a snap‑acting SPDT switch to provide dependable airflow detection for fans, heaters, humidifiers, and safety interlocks.