Head-to-Head Comparison

FeatureMechanical SwitchProximity Sensor
DetectionPhysical contactElectromagnetic (non-contact)
Life100K-500K opsUnlimited
Response5-15 ms1-3 ms
SealingIP40IP67
Cost$15-30$80-120

When to Choose Each

Mechanical: Low-volume molds, budget applications, molds with operator supervision.

Proximity: Automated lines, high-speed molding, lights-out production, molds with expensive cavities.