What are the key points for selecting the core components of a detection switch?

Detection switch (also known as micro switch or position detection switch for detection) is a precision electronic component that uses mechanical triggering (such as contact, pressing, induction) to achieve circuit on/off. It is mainly used to detect the position, status or action of objects and is widely used in automation equipment, home appliances, automotive electronics, medical equipment and other fields (such as checking whether the door is closed, whether the parts are in place, whether the stroke is completed, etc.). Below is an introduction:

According to the detection object

Metal objects: optional mechanical travel switch or Hall switch;

Non metallic/small objects: choose photoelectric switch or capacitive switch;

High speed moving objects: Select high-frequency switches (such as micro switches, photoelectric switches) with a response time of ≤ 1ms.

According to environmental conditions

High levels of dust/oil pollution: Choose mechanical switches with sealed enclosures (IP65) or photoelectric switches (to avoid contact contamination);

Large vibration impact: Choose a travel switch with anti vibration structure (such as spring buffer);

Flammable and explosive environment: Choose explosion-proof detection switch (such as explosion-proof type).

According to the installation space

Narrow space: Choose a small micro switch (size ≤ 10 × 5 × 3mm);

Remote detection: Choose a photoelectric switch (with a detection distance of up to 10m) or a long lever travel switch.