The part number 642.0639.205 refers to a Bernstein MAK-3926/24-4,5 magnetic proximity sensor, also distributed under Altech branding.
The part number 642.0639.205 refers to a Bernstein MAK-3926/24-4,5 magnetic proximity sensor, also distributed under Altech branding. It's designed for industrial automation systems where non-contact position sensing is required.
Product Overview
Attribute
Details
Manufacturer
Bernstein / Altech
Type
Magnetic Proximity Sensor
Model
MAK-3926/24-4,5
Output
PNP-NO/NC (configurable)
Voltage Range
Typically 10–30 V DC
Protection Class
IP67 (dust-tight and waterproof)
Housing Material
Aluminum or rugged plastic
Mounting
Surface or bracket mount
Sensing Distance
Varies based on magnet strength
Key Features
Non-contact sensing using magnetic field detection
Dual output (Normally Open / Normally Closed) for flexible integration
High environmental resistance for harsh industrial settings
Compact design for tight installation spaces
Ideal for position monitoring, safety interlocks, and automation control
