DDL: Monitor for differential pressure 
 
How energy efficiency is improved
Precise monitoring of the air flow in an air duct (e.g. filter monitoring)
 
Features 
• Gold-plated contacts for 24 V~/= and 250 V~
• Easy to fit
• Integrated cord grip • High level of setting accuracy
• Long-term stability of switching points
• Measuring element: Silicone diaphragm (does not emit gases)
• Upper switching point can be adjusted
• Setpoint can be seen from the outside
• Scope of delivery: Monitor with fixing bracket, connectors and 2 m of PVC tubing