Overview
The Allen-Bradley 42BC-B1LBAN-T4 is a side through-hole, long-range background suppression photoelectric sensor designed for industrial automation applications requiring reliable object detection. Built on the proven PHOTOSWITCH platform, this infrared sensor delivers dependable performance in packaging, material handling, and process automation environments.
Key Features
- 2-meter sensing range (6.6 feet) with background suppression to ignore distant objects
- Dual output: selectable NPN or PNP logic (Shore Control Protocol compatible)
- Selectable light/dark operation via manual adjustment
- 12–24 VDC input voltage with 100 mA maximum output current
- Infrared light source for robust detection across varying ambient conditions
- Screw terminal connection (16 AWG conductor) for secure, reliable wiring
- Plastic enclosure and side through-hole mounting for compact installation
Technical Specifications
- Input Voltage: 12–24 VDC
- Output Current: 100 mA maximum
- Sensing Range: 2 meters (6.6 feet)
- Detection Type: Background suppression (infrared)
- Output Logic: NPN/PNP selectable
- Connection Type: 4-screw terminal
- Conductor Size: 16 AWG
- Enclosure: Plastic
- Mounting Style: Side through-hole
- Light Source: Infrared (980 nm)
- Adjustment: Manually adjustable
- Weight: 0.40 lbs
- UPC: 662468476386
Typical Applications
The 42BC-B1LBAN-T4 excels in environments requiring long-range detection with false-trigger immunity:
- Packaging machinery and conveyor line detection
- Material handling and sorting systems
- Parts counting and position verification
- Automated assembly line monitoring
- Presence/absence detection in tight spaces
- Industrial process automation and control
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix PLCs
- Siemens S7-1200 and S7-1500 controllers
- Mitsubishi FX and Q-series PLCs
- Omron CP-series and NJ-series controllers
- Standard 12–24 VDC industrial control circuits
- EtherNet/IP networks (via appropriate I/O modules)
- PROFINET-compatible gateways
Replaces / Drop-In Replacement For
- 42BC-B1LBAL-T4 (1-meter range variant) — verify range requirement before substitution
- Earlier PHOTOSWITCH 42BC series models with similar terminal configurations
- Verify compatibility with your system integrator before ordering
Works With
- Studio 5000 (via digital input configuration)
- TIA Portal (Siemens environments)
- GX Works2/GX Works3 (Mitsubishi)
- Sysmac Studio (Omron)
- Standard 24 VDC I/O modules and terminal blocks
- Discrete input cards on any major PLC platform


























