Appliance Door Sensors

Introduction

Appliances, particularly refrigerators and freezers, must have their doors closed at all times.  If the door is left open for any length of time the compartments will warm up and the food contained within will begin to spoil.  Reed sensors are a simple choice to solve this problem...

Full application write-up: Appliance Door Control and Detection Reed Sensor

Features

• Contacts dynamically tested
• Cylindrical panel mount and screw fastening mounting
• Magnet and reed sensor are isolated and have no physical contact by typically having the magnet mounted to the appliance door, and the reed sensors mounted and positioned usually on a PCB on the appliance chassis to accurately detect the opening of the appliance door
• The reed switch used in the reed sensor is hermetically sealed and is therefore not sensitive to cold, wet and moist environments
• The permanent magnet is not affected by its environment
• Tens of millions of reliable operations
• Surface mount and through hole packages available