McDonnell & Miller FS7-4WL Snap Switch Freon Durable thin film nickel sensing

Durable thin film nickel sensing element ensures long-term signal stability and resistance to typical environmental contaminants

Can I use a common wire with this thermostat

improving system logic and HVAC energy efficiency

and the spring-return time is also typically under 15 seconds for rapid fire safety response

McDonnell & Miller FS7-4WL Snap Switch Freon Durable thin film nickel sensingThe McDonnell & Miller FS7 4WL (Part Number 120301) is a heavy duty, industrial grade liquid flow switch engineered for high demand applications requiring precise flow monitoring. Featuring a 1 1 4" NPT connection and a robust SPDT snap switch, this unit is designed for integration into control circuits that signal alarms, start motors, or cycle pumps. The FS7 4WL is built for durability with an extended paddle arm and trimmable stainless steel