Sensors — Available Products
Allen-Bradley 871TM-M10NP18-D4
$210.99
Allen-Bradley 872C-A10N18-A2
$301.00
Allen-Bradley 872C-A5N18-A2
$86.99
Allen-Bradley 872C-D2NP8-D4
$59.99
Allen-Bradley 872C-D2NP8-P3
$185.00
Allen-Bradley 872C-D3NP12-D4
$261.99
Allen-Bradley 872C-D4NP12-D4
$76.00
Allen-Bradley 872C-D5NP18-D4
$126.00
Allen Bradley 872C-D8NP18-D4
$44.99
Allen-Bradley 872C-DH3NP12-D4
$104.00
Allen-Bradley 872C-DH4NP12-D4
$60.00
Allen-Bradley 872C-M4NP12-D4
$46.00
Allen-Bradley 872C-M8NP18-D4
$341.99
Allen-Bradley 872C-N12NP18-D4
$315.99
Allen Bradley 872C-N8NP12-D4
$503.00
Overview
Allen-Bradley sensors are catalogued here as one photoelectric and proximity detection line. The family holds 39 catalogued part numbers.
Series in this family
- 871/872/873 Series Sensors — 29 catalogued parts across the 871, 872 and 42E prefixes.
By classification the catalogued parts fall into Photoelectric Sensors (21), Proximity Sensors (17) and one related power-base component. On the photoelectric side the catalogue covers the 42EF, 42MRU and 42G/42R PHOTOSWITCH lines; the 871 and 872 bulletins are the inductive proximity ranges. Sensing distance, barrel size and output type are encoded in the complete catalogue number, so match it from the installed sensor. Open the series page for the catalogued list, or send the number with a quote request.
Machine down? Get a fast quote on Sensors parts.
New, surplus, and refurbished Allen-Bradley options. Request a quote or speak directly with an automation specialist for emergency sourcing.
Common Faults
Common Faults
- Capacitor degradation after 7–10 years of service
- Communication errors after firmware drift
- Input/output channel failure from over-voltage events
- Cooling fan failure causing thermal shutdown
- Connector wear in high-vibration installations
Troubleshooting Basics
Troubleshooting
- Confirm supply voltage and grounding
- Inspect diagnostic LEDs and fault codes
- Verify firmware/configuration matches the application
- Swap with a known-good unit to isolate the fault
- Check field wiring and termination
Replacement Options
Replacement Options
- Direct OEM replacement (preferred)
- Refurbished OEM unit (cost-effective)
- Compatible cross from the same manufacturer's current catalog
- Equivalent from an alternative manufacturer (engineering review required)
Migration Recommendations
Migration Path
When migrating away from discontinued units, plan for: firmware compatibility, wiring changes, software/configuration migration, spare-parts stock, and field commissioning. Palm Parts Solution can supply both the current generation and stock of the legacy unit while you plan the migration.
Compatibility
Compatibility
Units in this family are compatible with the manufacturer's standard control architecture, communication protocols (where applicable), and accessory ecosystem. Always cross-reference the exact catalog number, firmware revision, and hardware series before installation.
Browse by Series
Product Types in this Family
Frequently Ordered Together
Frequently Ordered
Customers ordering from this family frequently pair the unit with matching cables, terminal blocks, mounting kits, and surge protection. Contact our team for a complete BOM review.
Compatible & related families
Why Buy From Palm Parts Solution
DHL, FedEx, UPS — door-to-door in 1-4 business days.
RFQs sent during business hours are answered the same business day.
New, surplus and refurbished Allen-Bradley options — request current availability.
24/7 emergency sourcing for production-critical failures.
Custom pricing on volume, repair, and hard-to-find SKUs.
Talk to engineers, not call-center agents.
We hunt down discontinued and obsolete parts globally.
Lifecycle-end Allen-Bradley parts — sourced, tested, warrantied.
Frequently asked questions
What is the Sensors family used for?
The Sensors family from Allen-Bradley covers industrial automation applications such as machine control, process control, motor control and discrete I/O. Browse the series below to find the exact part number for your installation.
Are obsolete Sensors parts still available?
Yes. We stock new surplus, refurbished and end-of-life Sensors units from Allen-Bradley. If a part number is no longer in production we will identify a compatible replacement or repair your existing module.
How do I identify the correct Sensors replacement?
Match the catalog number printed on the Sensors label, then confirm voltage, I/O count, communication protocol and firmware revision. Our team can validate compatibility against your original Allen-Bradley configuration before shipment.
Do Sensors parts come tested?
Every Sensors unit we ship is functionally tested against Allen-Bradley OEM specifications. Refurbished items include a 1-year warranty and a full inspection report on request.