Product Overview
Miniature M4 Threaded Flush Inductive Switch with PNP Normally Open Output
Condition
New old stock (NOS), unused. Includes two M4 hex mounting nuts, two star lock washers, and factory technical specification insert. Markings on cable jacket: CONTRINEX DW-AV-623-M4-276.
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Product Overview
Contrinex DW-AV-623-M4-276 miniature inductive proximity sensor provides non-contact metallic target detection in compact industrial machinery and precision automated fixtures. Designed with a threaded M4 x 0.5 mm housing and a 1.0 mm embeddable (flush) sensing distance, this sensor fits into narrow mechanical clearances where standard M8 or M12 barrel sensors cannot fit. The 3-wire DC circuit operates on 10 to 30 VDC supply voltage with a PNP normally open (N.O.) switching configuration rated for loads up to 100 mA.
Key Features
- Housing: M4 x 0.5 mm threaded barrel
- Sensing Distance: 1.0 mm (sn)
- Mounting: Embeddable (flush)
- Output Type: PNP Normally Open (N.O.), 3-wire DC
- Supply Voltage: 10 to 30 VDC
- Maximum Load Current: 100 mA
- Termination: Cable pigtail with threaded M8 3-pin male quick-disconnect connector
- Included Hardware: 2 hex mounting nuts and 2 star lock washers
Applications
- Positions into tight end-effector tooling on automated pick-and-place equipment to verify part presence.
- Monitors home position and axis limits on precision CNC micro-mills, 3D printers, and custom linear motion slides where larger sensors will not clear.
- Detects indexing notches and gear teeth on compact rotary actuators and assembly dials.
- Integrates into robotics and benchtop automation projects requiring reliable 24V PNP non-contact sensing.
Frequently Asked Questions
What is the wiring pinout for this sensor?
The unit features a standard 3-wire DC configuration with an M8 3-pin connector. Per the factory documentation: pin 1 (brown wire) connects to +10 to 30 VDC, pin 3 (blue wire) connects to 0 VDC, and pin 4 (black wire) serves as the PNP normally open switched output to the load.
Can this sensor be mounted flush in metal tooling?
Yes. The DW-AV-623-M4-276 is rated as embeddable, allowing the threaded M4 sensing face to sit flush with surrounding metal fixtures without false triggering.
Why purchase this single Contrinex sensor instead of a bulk lot?
You get the exact unused unit shown in the photographs, complete with its mounting nuts and factory documentation, eliminating long lead times and high minimum order quantities when you only need to get one machine back up and running. This item clears our $28 free shipping threshold on its own, and orders ship from our Idaho warehouse the same or next business day.
At M4, this switch is smaller than the wrench you will use to secure it. When clearance inside a tight fixture comes down to millimeters, threading in the exact sensor is what gets the cell cycling again.
