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    Precision Industrial Sensors & Switches

    Ensure accurate monitoring and control with fiber optic, humidity, and flow sensors, tailored for precise measurement and enhanced automation reliability.

    Optimize your industrial processes with our cutting-edge sensors and switches. Our comprehensive range features fiber optic cables, oxygen sensors, humidity sensors/transmitters, flow meters, and microswitches/miniature switches to meet your diverse sensing and switching needs. Whether you're optimizing industrial processes, monitoring environmental conditions, or enhancing automation systems, our sensors and switches provide the precision and reliability you need for seamless operations and data-driven decision making. Shop now for cutting-edge sensors and switches to optimize your industrial automation.

    Rockwell Disclaimer: The product is used surplus. Radwell is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because Radwell is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, Radwell makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Radwell also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. Radwell also makes no representations as to your right to install any such firmware on the product. Radwell will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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    Results 401-450 of 500.
    ALLEN BRADLEY 889N-F4AFNU-3F

    ALLEN BRADLEY

    PHOTOSWITCH

    889N-F4AFNU-3F

    MINI CABLE, FEMALE, STRAIGHT (INT THREADS), FEMALE, STRAIGHT (INT THREADS), 4-PINS, MINI / MINI PLUS, MALE, STRAIGHT (INT. THREADS), MINI, STRAIGHT, MALE(INT. THREADS), SAME AS FIRST END, PV ...
    ✓ IN STOCK!
    Buy Surplus As Low As $21.40
    $21.40
    ALLEN BRADLEY 42DBS-5000

    ALLEN BRADLEY

    PHOTOSWITCH

    42DBS-5000

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC SENSOR, 10-30 VDC INPUT, 30 VDC OUTPUT, 24 VDC, WITH NPN AND PNP, MOUNTABLE
    ✓ IN STOCK!
    Buy Surplus As Low As $506.76
    $506.76
    Repair Yours $421.27
    ALLEN BRADLEY 845N-SJDN3-CKY2

    ALLEN BRADLEY

    845N-SJDN3-CKY2

    ENCODER, INCREMENTAL, OPTICAL, METAL, WITH SHAFT, MOUNTABLE
    ✓ IN STOCK!
    Buy Surplus As Low As $238.03
    $238.03
    Repair Yours $300.00
    ALLEN BRADLEY 845L-SAJZ23-CKY3

    ALLEN BRADLEY

    845L-SAJZ23-CKY3

    ENCODER,INCREMENTAL OPTICAL
    ✓ IN STOCK!
    Buy Surplus As Low As $137.12
    $137.12
    Repair Yours $300.00
    ALLEN BRADLEY X-379482

    ALLEN BRADLEY

    X-379482

    CONTACT BLOCK UNIT, REPLACEMENT FOR LIMIT SWITCH 802T-A, SCREW TERMINALS, 1 NO / 1 NC, REPLACEMENT PART: X-166558 (EXCEPT FOR ALR TYPE), (802T-X379482)
    Buy Surplus As Low As $68.00
    $68.00
    ALLEN BRADLEY 194L-E12-4531

    ALLEN BRADLEY

    194L-E12-4531

    LOAD SWITCH, 194L, 12 AMP,1 POLE,STEP 1-2-3-4-5-6 60,OPEN,FRONT/DOOR,SELECT ACTUATOR SEPARATELY
    ✓ IN STOCK!
    Buy Surplus As Low As $59.00
    $59.00
    BANNER ENGINEERING SMA912FQD

    BANNER ENGINEERING

    SMA912FQD

    AC SCANNER, FIBER WITH QUICK DISCONNECT, 24-130 VAC, (25517)
    ✓ IN STOCK!
    Buy Surplus As Low As $114.53
    $114.53
    BANNER ENGINEERING SMA31ELQD

    BANNER ENGINEERING

    SMA31ELQD

    SENSOR, PHOTOELECTRIC, MINI-BEAM EMITTER, RANGE: 30M, 24-240 VAC, MICRO 3-PIN INTEGRAL QD, FOR RECEIVER SEE PART # SM2A31RLQD
    ✓ IN STOCK!
    $155.00 Buy Surplus As Low As $93.00
    $93.00
    BANNER ENGINEERING SM91RSR

    BANNER ENGINEERING

    SM91RSR

    25288 - VALU-BEAM: RECEIVER;, RANGE: 3 M;INPUT: 10-30V DC;, OUTPUT: BIPOLAR: 1 NPN; 1 PNP;, 2 M (6.5 FT) CABLE
    ✓ IN STOCK!
    $408.75 Buy Surplus As Low As $245.25
    $245.25
    Repair Yours $300.00
    BANNER ENGINEERING SM912LVAGQDH

    BANNER ENGINEERING

    SM912LVAGQDH

    PHOTOELECTRIC SENSOR, DC SCANNER, M12 QUICK DISCONNECT TYPE, INTEGRAL QD CONNECTION, 4-PIN EURO CONNECTOR, .3-4.5M MEASUREMENT RANGE, RETROREFLECTIVE, VALU-BEAM SERIES, 10-30 VDC, 28630
    ✓ IN STOCK!
    $426.25 Buy Surplus As Low As $255.75
    $255.75
    Repair Yours $300.00
    BANNER ENGINEERING SM912LVAGQD

    BANNER ENGINEERING

    SM912LVAGQD

    26398 - VALU-BEAM: POLARIZED RETRO; RANGE: 0.3 - 4.5 M; INPUT: 10-30V DC; OUTPUT: BIPOLAR: 1 NPN; 1 PNP; QUICK-DISCONNECT CONNECTOR
    ✓ IN STOCK!
    $398.75 Buy Surplus As Low As $239.25
    $239.25
    Repair Yours $300.00
    BANNER ENGINEERING SM812LV

    BANNER ENGINEERING

    SM812LV

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC SCANNER, W/ BRACKET
    ✓ IN STOCK!
    Buy Surplus As Low As $34.79
    $34.79
    BANNER ENGINEERING SM51RB6

    BANNER ENGINEERING

    SM51RB6

    DISCONTINUED BY MANUFACTURER, OPPOSED MODE SENSOR, SM51 SERIES, 10-30 V DC, -40-+70 DEG C, 1/2" WIDE HOUSING DESIGN, 100 FT RANGE
    ✓ IN STOCK!
    Buy Surplus As Low As $180.00
    $180.00
    BANNER ENGINEERING SM51RB

    BANNER ENGINEERING

    SM51RB

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC RECEIVER, SM51 SERIES, 8 METER RANGE, 10-30 VDC - NPN SUPPLY, 2 METER CABLE LENGTH
    ✓ IN STOCK!
    Buy Surplus As Low As $469.11
    $469.11
    BANNER ENGINEERING SM512DBX

    BANNER ENGINEERING

    SM512DBX

    DISCONTINUED BY MANUFACTURER, SCANNER, DB W/MORE POWER
    ✓ IN STOCK!
    Buy Surplus As Low As $195.00
    $195.00
    BANNER ENGINEERING SM31RMHSQD

    BANNER ENGINEERING

    SM31RMHSQD

    29269 - MINI-BEAM: HIGH SPEED RECEIVER; INPUT: 10-30V DC; OUTPUT: BIPOLAR: 1 NPN; 1 PNP; MHS RESPONSE TIME =0.3 MILLISECOND; QD CONNECTOR
    ✓ IN STOCK!
    $176.25 Buy Surplus As Low As $133.95
    $133.95
    Repair Yours $300.00
    BANNER ENGINEERING SM31RLQD

    BANNER ENGINEERING

    SM31RLQD

    PHOTOELECTRIC,MINI-BEAM RECEIVER, RANGE 30 M, INPUT 10-30 V DC, OUTPUT BIPOLAR, 1 NPN, 1 PNP, EURO M12 4-PIN CONNECTOR
    ✓ IN STOCK!
    $176.25 Buy Surplus As Low As $105.75
    $105.75
    BANNER ENGINEERING SM31RF

    BANNER ENGINEERING

    SM31RF

    MINIBEAM SCANNER, SM31R SERIES, W/ FIBER BLOCK, (25997)
    ✓ IN STOCK!
    $176.25 Buy Surplus As Low As $82.68
    $82.68
    BANNER ENGINEERING SM31ELQD

    BANNER ENGINEERING

    SM31ELQD

    PHOTOELECTRIC SENSOR, MINI-BEAM SERIES, THROUGH BEAM EMITTER, 30 METER RANGE, 10-30 VDC INPUT, NO OUTPUTS, EURO M12 4-PIN INTEGRAL QD CONNECTOR, M18 MOUNTING THREAD, IP67 ENCLOSURE, (26952)
    ✓ IN STOCK!
    $123.75 Buy Surplus As Low As $74.25
    $74.25
    BANNER ENGINEERING SM31EL

    BANNER ENGINEERING

    SM31EL

    PHOTOELECTRIC SENSOR, MINI-BEAM SERIES, EMITTER SENSING MODE, 30 METER RANGE, 10-30 VDC INPUT, 2 METER CABLE, 70 CELSIUS MAX OPERATING TEMPERATURE, 2 PIN, ACRYLIC LENS MATERIAL, 12 MM BARREL ...
    ✓ IN STOCK!
    $123.75 Buy Surplus As Low As $74.25
    $74.25
    BANNER ENGINEERING SM312W

    BANNER ENGINEERING

    SM312W

    (26264), PHOTOELECTRIC SENSOR, MINI-BEAM SERIES, WIDE ANGLE DIFFUSE, INFRARED LED, 130 MM RANGE, 10-30 VDC INPUT, PNP/NPN, LIGHT/DARK OPERATE, 4-WIRE, 2 METER CABLE LENGTH, IP67
    ✓ IN STOCK!
    $207.50 Buy Surplus As Low As $124.50
    $124.50
    BANNER ENGINEERING SM312LVQDP

    BANNER ENGINEERING

    SM312LVQDP

    PHOTOELECTRIC SENSOR, MINI-BEAM: RETRO, RANGE: 5 METER, INPUT: 10-30 VDC, OUTPUT: BIPOLAR, 1 NPN, 1 PNP, 6 INCH PIGTAIL QD CONNECTOR, (28155)
    ✓ IN STOCK!
    $225.00 Buy Surplus As Low As $135.00
    $135.00
    BANNER ENGINEERING SM312FMHSQD

    BANNER ENGINEERING

    SM312FMHSQD

    SENSOR, MINI-BEAM: INFRARED HIGH SPEED G,LASS FIBER OPTIC, RANGE: DEPENDS ON FIBER USED, INPUT: 10-30 V DC, OUTPUT: BIPOLAR: 1 NPN, 1 PNP, MHS RESPONSE TIME =0.3 MILLISECOND, QD CONNECTOR (2 ...
    ✓ IN STOCK!
    $207.50 Buy Surplus As Low As $124.50
    $124.50
    BANNER ENGINEERING Q85VR3LP

    BANNER ENGINEERING

    Q85VR3LP

    ELECTROMECHANICAL RELAY, SPDT, 80 MM - 4.6 M, 12-240 VDC, 24-240 VAC, Q85 SERIES, (31213)
    ✓ IN STOCK!
    $292.50 Buy Surplus As Low As $175.50
    $175.50
    BANNER ENGINEERING Q45VR2FP

    BANNER ENGINEERING

    Q45VR2FP

    FIBER OPTIC AMPLIFIER, Q45 SERIES, RANGE: DEPENDS ON FIBER, INPUT: 90-250 VAC, OUTPUT: SPDT ELECTROMECHANICAL RELAY, 2 M (6.5 FT), (35445)
    ✓ IN STOCK!
    $236.25 Buy Surplus As Low As $141.75
    $141.75
    BANNER ENGINEERING SM2A912LV

    BANNER ENGINEERING

    SM2A912LV

    26575, PHOTOELECTRIC SENSOR, RETROREFLECTIVE VISIBLE BEAM, 30FT RANGE, 24-250VAC, SPST SCR SOLID-STATE 2-WIRE, 6.5 FT CABLE, VISIBLE RED LIGHT SOURCE
    ✓ IN STOCK!
    $448.75 Buy Surplus As Low As $269.25
    $269.25
    Repair Yours $300.00
    BANNER ENGINEERING SM2A912FQD

    BANNER ENGINEERING

    SM2A912FQD

    PHOTOELECTRIC SENSOR, VALU-BEAM SERIES, GLASS FIBER OPTIC TYPE, RANGE DEPENDS ON FIBER, 24-250 VAC INPUT, SCR SOLID-STATE 2-WIRE OUTPUT, SINGLE-POLE SINGLE-THROW CONFIGURATION, LIGHT/DARK OP ...
    ✓ IN STOCK!
    $448.75 Buy Surplus As Low As $269.25
    $269.25
    Repair Yours $300.00
    BANNER ENGINEERING SM2A912DQD

    BANNER ENGINEERING

    SM2A912DQD

    PHOTOELECTRIC SENSOR, 912 SERIES, VALU-BEAM, DIFFUSE LONG RANGE SENSING MODE, RANGE: 76 MM OR 30 IN, INFRARED BEAM (880 NM), INPUT: 24-250 VAC, OUTPUT: SPST SCR SOLID-STATE 2-WIRE, QUICK-DIS ...
    ✓ IN STOCK!
    $448.75 Buy Surplus As Low As $269.25
    $269.25
    BANNER ENGINEERING SM2A312W

    BANNER ENGINEERING

    SM2A312W

    26265 - MINI-BEAM PHOTOELECTRIC SENSOR, DIVERGENT DIFFUSE, 130MM RANGE, 24-240 VAC, SPST, 2 WIRE, 2M
    ✓ IN STOCK!
    $257.50 Buy Surplus As Low As $154.50
    $154.50
    BANNER ENGINEERING SM2A312F

    BANNER ENGINEERING

    SM2A312F

    SENSOR, MINI-BEAM / INFRARED, 880 NM, GLASSFIBER OPTIC, RANGE / DEPENDS ON FIBER, INPUT: 24-240 VAC, OUTPUT / SPST SOLID-STATE / 2-WIRE, 2 M / 6.5 FT CABLE, (25966)
    ✓ IN STOCK!
    $223.00 Buy Surplus As Low As $117.39
    $117.39
    BANNER ENGINEERING SM2A312CV2QD

    BANNER ENGINEERING

    SM2A312CV2QD

    SENSOR, MINI-BEAM, VISIBLE RED 650 NM CONVERGENT, FOCAL POINT: 43 MM, INPUT: 24-240 V AC, OUTPUT: SPST SOLID-STATE 2-WIRE, MICRO 3-PIN INTEGRAL QD, 26911
    ✓ IN STOCK!
    $283.75 Buy Surplus As Low As $170.25
    $170.25
    Repair Yours $300.00
    BANNER ENGINEERING SM2A312CV

    BANNER ENGINEERING

    SM2A312CV

    CONVERGENT SENSOR, VISIBLE RED MINI BEAM, 650 NM, 16 MM FOCUS RANGE, 24-240 VAC, SPST SOLID-STATE, 2-WIRE, 2 M (6.5 FT) CABLE, (25992)
    ✓ IN STOCK!
    $265.91 Buy Surplus As Low As $68.47
    $68.47
    BANNER ENGINEERING SM2A30PRLQD

    BANNER ENGINEERING

    SM2A30PRLQD

    (27298), PHOTOELECTRIC SENSOR, SM30 SERIES, RECEIVER, OPPOSED MODE, FREQUENCY A, PBT POLYESTER, 150 M RANGE, 24-240 V AC INPUT, SPST SOLID-STATE OUTPUT, LIGHT OPERATE, MINI 3-PIN INTEGRAL QD
    ✓ IN STOCK!
    $363.75 Buy Surplus As Low As $218.25
    $218.25
    BANNER ENGINEERING Q25SP6FF100Q

    BANNER ENGINEERING

    Q25SP6FF100Q

    SENSOR, EZ-BEAM Q25 SERIES: FIXED FIELD, RANGE: 100 MM, INPUT: 10-30 VDC, OUTPUT: COMPLEMENTARY PNP, 4-PIN M12 INTEGRAL QD, (31941)
    ✓ IN STOCK!
    $226.25 Buy Surplus As Low As $135.75
    $135.75
    BANNER ENGINEERING Q25SN6LP

    BANNER ENGINEERING

    Q25SN6LP

    PHOTOELECTRIC SENSOR, EZ-BEAM Q25 SERIES, POLARIZED RETRO, 2 METER RANGE, 10-30 VDC INPUT, COMPLEMENTARY NPN OUTPUT, 2 METER (6.5 FT) CABLE, IP69K, VISIBLE RED LED SENSING BEAM, RECTANGULAR ...
    ✓ IN STOCK!
    $191.25 Buy Surplus As Low As $118.22
    $118.22
    Repair Yours $300.00
    BANNER ENGINEERING Q23SN6RQ

    BANNER ENGINEERING

    Q23SN6RQ

    DISCONTINUED BY MANUFACTURER, Q23 SERIES RECEIVER, RANGE: 8 M, INPUT: 10-30 VDC, OUTPUT: COMPLEMENTARY NPN, 6 IN. PIGTAIL, QUICK-DISCONNECT CONNECTOR, (46444)
    ✓ IN STOCK!
    Buy Surplus As Low As $208.06
    $208.06
    BANNER ENGINEERING Q14AP6R

    BANNER ENGINEERING

    Q14AP6R

    45387 - Q14 SERIES: RECEIVER; RANGE: 1.8 M; INPUT: 10-30V DC; OUTPUT: LIGHT OPERATE - PNP; 2 M (6.5 FT) CABLE
    ✓ IN STOCK!
    $117.50 Buy Surplus As Low As $62.54
    $62.54
    Repair Yours $300.00
    BANNER ENGINEERING PT250B

    BANNER ENGINEERING

    PT250B

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC SENSOR, 120VAC, 8FEET RANGE, .14IN DIAMETER, NO REPLACEMENT
    ✓ IN STOCK!
    Buy Surplus As Low As $41.26
    $41.26
    BANNER ENGINEERING SM2A912LVAGQD

    BANNER ENGINEERING

    SM2A912LVAGQD

    PHOTOELECTRIC SENSOR, VALU-BEAM: POLARIZED RETRO, RANGE: 0.3 - 4.5 M, INPUT: 24-250 VAC, OUTPUT: SPST SCR SOLID-STATE 2-WIRE, QUICK-DISCONNECT CONNECTOR, (26653)
    ✓ IN STOCK!
    $472.50 Buy Surplus As Low As $283.50
    $283.50
    BANNER ENGINEERING SM2A31RQD

    BANNER ENGINEERING

    SM2A31RQD

    MINI-BEAM: RECEIVER, RANGE: 3 M, INPUT: 24-240 V AC, OUTPUT: SPST SOLID-STATE 2-WIRE, MICRO 3-PIN INTEGRAL QD, 26846, FOR EMITTER SEE PART # SMA31EQD
    ✓ IN STOCK!
    $221.25 Buy Surplus As Low As $132.75
    $132.75
    BANNER ENGINEERING SM2A912DSRQD

    BANNER ENGINEERING

    SM2A912DSRQD

    PHOTOELECTRIC SENSOR, DIFFUSE, VALU-BEAM, 380 MM RANGE, 24-250 VAC, SPST, SCR, SOLID-STATE, 2-WIRE, INTEGRAL QD CONNECTION, (26572)
    ✓ IN STOCK!
    $448.75 Buy Surplus As Low As $269.25
    $269.25
    BANNER ENGINEERING SM2A312FQD

    BANNER ENGINEERING

    SM2A312FQD

    FIBER OPTIC AMPLIFIER, MINI-BEAM SERIES, INFRARED LIGHT SOURCE, 880 NM, GLASS, RANGE: DEPENDS ON FIBER, INPUT: 24-240 VAC, 3 PIN, OUTPUT: SPST SOLID-STATE 2-WIRE, QUICK-DISCONNECT CONNECTOR, ...
    ✓ IN STOCK!
    $257.50 Buy Surplus As Low As $154.50
    $154.50
    BANNER ENGINEERING SM2A312FP

    BANNER ENGINEERING

    SM2A312FP

    PHOTOELECTRIC SENSOR, MINI-BEAM, PLASTIC FIBER OPTIC, RANGE DEPENDS ON FIBER, 24-240 VAC, SPST OUTPUT, SOLID-STATE, 2-WIRE, 2 M (6.5 FT) CABLE, (26057)
    ✓ IN STOCK!
    $267.50 Buy Surplus As Low As $160.50
    $160.50
    Repair Yours $300.00
    BANNER ENGINEERING Q25SN6LPQ

    BANNER ENGINEERING

    Q25SN6LPQ

    PHOTOELECTRIC SENSOR, Q25 SERIES, EZ-BEAM, RETROREFLECTIVE, 2 METER, NPN, 10-30V, QUICK DISCONNECT
    ✓ IN STOCK!
    $191.25 Buy Surplus As Low As $145.35
    $145.35
    BANNER ENGINEERING Q23SN6FP

    BANNER ENGINEERING

    Q23SN6FP

    DISCONTINUED BY MANUFACTURER, (46438) PHOTOELECTRIC SENSOR, Q23 SERIES: PLASTIC FIBER OPTIC, RANGE: DEPENDS ON FIBER USED, INPUT: 10-30V DC, OUTPUT: COMPLEMENTARY NPN, 2 M (6.5 FT) CABLE
    ✓ IN STOCK!
    Buy Surplus As Low As $55.99
    $55.99
    Repair Yours $300.00
    BANNER ENGINEERING Q45UR3LIU64CQ6

    BANNER ENGINEERING

    Q45UR3LIU64CQ6

    ULTRASONIC SENSOR, Q45UR ANALOG SERIES, 50-250 MM RANGE, 15-24 VDC, OUTPUT SELECTABLE: 0-10 VDC OR 4-20 MA SOURCING, EURO-STYLE QUICK-DISCONNECT, (53014)
    ✓ IN STOCK!
    $802.50 Buy Surplus As Low As $481.50
    $481.50
    BANNER ENGINEERING Q45BW22LVQ

    BANNER ENGINEERING

    Q45BW22LVQ

    SENSOR, RETROFLECTIVE, NON-POLARIZING, RECTANGULAR HOUSING, VISIBLE RED LED, SOLID STATE AC SWITCH, 90-250 V AC,QUICK DISCONNECT, 3-PIN, RANGE 0.08-9 METER 37014
    ✓ IN STOCK!
    $250.00 Buy Surplus As Low As $150.00
    $150.00
    Repair Yours $300.00
    BANNER ENGINEERING Q45BW22LPQ

    BANNER ENGINEERING

    Q45BW22LPQ

    SENSOR, Q45 SERIES RUGGED RECTANGLE, POLARIZED RETRO, RANGE: 0.15-6 M, INPUT: 90-250 VAC, OUTPUT: SPST SOLID-STATE RELAY, MINI 3-PIN INTEGRAL QD, (37013)
    ✓ IN STOCK!
    $258.75 Buy Surplus As Low As $155.25
    $155.25
    BANNER ENGINEERING Q45BW22LPC1

    BANNER ENGINEERING

    Q45BW22LPC1

    54015 - Q45BW22LPC1 600 V CABLE 120/240 V AC AC SOLID STATE
    ✓ IN STOCK!
    $273.75 Buy Surplus As Low As $180.68
    $180.68
    Repair Yours $300.00
    BANNER ENGINEERING Q45BB6DLQ

    BANNER ENGINEERING

    Q45BB6DLQ

    PHOTOELECTRIC SENSOR, Q45 SERIES: DIFFUSE, RANGE: 1.8 M, INPUT: 10-30 VDC, OUTPUT: BIPOLAR: 1 NPN, 1 PNP, MINI 4-PIN INTEGRAL QD, (36564)
    ✓ IN STOCK!
    $203.75 Buy Surplus As Low As $122.25
    $122.25
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