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Red rectangular area sensor housing with eight optical axes at 40mm pitch

Autonics Corp

Autonics Corp BW40-08 Area Sensor 8 axes 40mm pitch .1-7m NPN

SKU CH-3941-30ZZS MPN BW40-08

Through-beam area sensor with eight 40 mm axes detecting from 0.1 to 7 m using 850 nm infrared and NPN output

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • 8-axis detection covers wide zones
  • 1 to 7 m sensing range suits varied layouts
  • 40 mm axis pitch gives consistent resolution
  • Infrared 850 nm LED resists ambient light
  • NPN open-collector output simplifies 12-24 VDC wiring

Sensing range and axis layout

This Autonics BW40-08 area sensor uses a through-beam method with eight optical axes spaced at a 40 mm pitch. It detects objects from 0.1 m up to 7 m using an 850 nm infrared LED. The unit operates on a 12-24 VDC supply and provides an NPN open-collector output in Light ON mode.

Suitable applications and limits

The sensor suits production lines, packaging machines and safety zones that need multi-point detection across a defined curtain. Installations requiring a different axis count, a longer or shorter range, or a PNP output type should consider other models.

Deciding specification

The eight-axis array at 40 mm pitch sets the detection resolution and coverage height, making it the single figure that confirms whether this sensor matches the application.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $216.99
Pricier than about 81% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameAutonics
Model nameBW40-08
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

What supply voltage must my panel provide for the BW40-08 sensor to operate?

The sensor requires 12-24VDC with a maximum 10% ripple on the power line.

Can the NPN open-collector output drive a legacy PLC input that expects a sinking signal?

Yes, the control output is an NPN open collector configured for Light ON operation, compatible with sinking inputs.

How do I verify the 8-axis detection zone is aligned correctly after mounting?

With the beam unbroken, the output stays active in Light ON mode; interrupting any of the 8 axes at 40mm pitch switches the output off.

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