Cleveland Controls DFS-221-153 Switch This 4-terminal adjustable time delay

This 4-terminal adjustable time delay relay features a broad timing range of 0

this slinger is engineered for a friction-fit application on standard condenser fan motors

The 3" probe is required to reach the specified monitoring zone

Lever Acting Design: Provides superior stable pressure control and quick response to changes in gas flow demand

Cleveland Controls DFS-221-153 Switch This 4-terminal adjustable time delayThe Cleveland Controls DFS 221 153 is a precision engineered airflow proving switch designed for critical monitoring in duct heaters, commercial ovens, and high demand HVAC systems. This differential air pressure sensing switch features a factory fixed setpoint of 0. 05" W. C., making it an ideal choice for applications requiring a non adjustable, tamper proof safety control. Built with a robust zinc plated housing and a high performance silicone