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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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    BANNER ENGINEERING Q19SP6D

    BANNER ENGINEERING

    Q19SP6D

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC, PNP DIFFUSE, 10-30 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $78.82
    $78.82
    BANNER ENGINEERING Q19SP6LP

    BANNER ENGINEERING

    Q19SP6LP

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC SENSOR, CABLE CONNECTION, 2M CABLE, 4-WIRE
    ✓ IN STOCK!
    Buy Surplus As Low As $60.75
    $60.75
    BANNER ENGINEERING Q19SP6LPQ

    BANNER ENGINEERING

    Q19SP6LPQ

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC, PNP, POLARIZED, RETRO, QD
    ✓ IN STOCK!
    Buy Surplus As Low As $34.31
    $34.31
    Repair Yours $300.00
    BANNER ENGINEERING Q25AW3LP

    BANNER ENGINEERING

    Q25AW3LP

    SENSOR, POLARIZED RETRO, EZ-BEAM, Q25 SERIES, RANGE: 2 M, INPUT: 20-250 VAC, OUTPUT: SPST SOLID-STATE LIGHT OPERATE, 2 M CABLE, (31964)
    ✓ IN STOCK!
    $243.75 Buy Surplus As Low As $146.25
    $146.25
    Repair Yours $300.00
    BANNER ENGINEERING Q25SN6FF50Q

    BANNER ENGINEERING

    Q25SN6FF50Q

    PHOTOELECTRIC SENSOR, FIXED FIELD, 50 MM RANGE, 10-30 VDC INPUT, COMPLEMENTARY NPN OUTPUT, 3MS OUTPUT RESPONSE TIME, EURO M12 4-PIN INTEGRAL CONNECTION, LIGHT/DARK, INFRARED BEAM, LED INDICA ...
    ✓ IN STOCK!
    $226.25 Buy Surplus As Low As $135.75
    $135.75
    Repair Yours $300.00
    BANNER ENGINEERING Q25SP6FF50Q

    BANNER ENGINEERING

    Q25SP6FF50Q

    PHOTOELECTRIC SENSOR, EZ-BEAM, Q25 SERIES, FIXED FIELD, 50 MM RANGE, 10-30 VDC INPUT, COMPLEMENTARY PNP OUTPUT, EURO M12 CONNECTOR, 4-PIN INTEGRAL QUICK DISCONNECT, (3031939)
    ✓ IN STOCK!
    $189.00 Buy Surplus As Low As $86.95
    $86.95
    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 QM42VN6LP

    BANNER ENGINEERING

    QM42VN6LP

    PHOTOELECTRIC SENSOR, QM42 SERIES, POLARIZED RETRO, 3-METER RANGE, INPUT 10-30 V DC, SPDT, COMPLEMENTARY NPN, 2 METER (6.5 FT) CABLE, 44902
    ✓ IN STOCK!
    Buy Surplus As Low As $153.06
    $153.06
    Repair Yours $300.00
    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 SM312FQDP

    BANNER ENGINEERING

    SM312FQDP

    PHOTOELECTRIC SENSOR, MINI-BEAM SERIES, FIBER OPTIC, 10-30 VDC, 1 MS, NPN/PNP, M12 QUICK DISCONNECT, 1MS RESPONSE TIME, LED LIGHT SOURCE, ADJUSTABLE, POTENTIOMETER, -20 TO +70 DEGREE C, (295 ...
    ✓ IN STOCK!
    $225.00 Buy Surplus As Low As $135.00
    $135.00
    BANNER ENGINEERING SM312FV

    BANNER ENGINEERING

    SM312FV

    SENSOR, PHOTOELECTRIC, VISIBLE RED 650 NM GLASS FO, 10-30VDC, 2 METER
    ✓ IN STOCK!
    $207.50 Buy Surplus As Low As $124.50
    $124.50
    BANNER ENGINEERING SM312FVGQD

    BANNER ENGINEERING

    SM312FVGQD

    MINI-BEAM: VISIBLE GREEN 525 NM GLASS FIBER OPTIC; RANGE: DEPENDS ON FIBER; INPUT: 10-30 VDC; OUTPUT: BIPOLAR: 1 NPN; 1 PNP; M12 QUICK DISCONNECT, (50987)
    ✓ IN STOCK!
    $196.00 Buy Surplus As Low As $117.60
    $117.60
    Repair Yours Contact Us
    BANNER ENGINEERING SM312FVQD

    BANNER ENGINEERING

    SM312FVQD

    PHOTOELECTRIC SENSOR, MINI-BEAM, VISIBLE RED 650 NM GLASS FIBER OPTIC, RANGE, DEPENDS ON FIBER, INPUT, 10-30 V DC, OUTPUT, BIPOLAR, 1 NPN, 1 PNP, QUICK-DISCONNECT CONNECTOR
    ✓ IN STOCK!
    $207.50 Buy Surplus As Low As $124.50
    $124.50
    BANNER ENGINEERING SM312LVQD

    BANNER ENGINEERING

    SM312LVQD

    SENSOR, MINI-BEAM, RETROREFLECTIVE SENSING, 5 METER MAX SENSING DISTANCE, 10/30 VDC INPUT, NPN/ PNP (BIPOLAR) OUTPUT, EURO M12 4-PIN INTEGRAL QUICK DISCONNECT, (26838)
    ✓ IN STOCK!
    $207.50 Buy Surplus As Low As $124.50
    $124.50
    BANNER ENGINEERING SM180D

    BANNER ENGINEERING

    SM180D

    DISCONTINUED BY MANUFACTURER, PROXIMITY SWITCH ,10-30VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $46.19
    $46.19
    BANNER ENGINEERING SM180E

    BANNER ENGINEERING

    SM180E

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC EMITTER, 10- 30 VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $27.18
    $27.18
    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 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 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 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 $94.05
    $94.05
    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 SM31RL

    BANNER ENGINEERING

    SM31RL

    PHOTOELECTRIC SENSOR, MINI-BEAM RECEIVER, 30 METER RANGE, 10-30 VDC INPUT, BIPOLAR-NPN/PNP OUTPUT, 2 M (6.5 FT) CABLE, (25725)
    ✓ IN STOCK!
    $176.25 Buy Surplus As Low As $133.95
    $133.95
    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 $133.95
    $133.95
    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 SM31RQD

    BANNER ENGINEERING

    SM31RQD

    PHOTOELECTRIC SENSOR, MINI-BEAM SERIES, RECEIVER, 3 METER RANGE, 10-30 VDC INPUT, BIPOLAR OUTPUT, 1 NPN / 1 PNP, M12 4-PIN, INTEGRAL QD, IP67 ENCLOSURE PROTECTION
    ✓ IN STOCK!
    $176.25 Buy Surplus As Low As $105.75
    $105.75
    Repair Yours $300.00
    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 SM512LB

    BANNER ENGINEERING

    SM512LB

    DISCONTINUED BY MANUFACTURER, SCANNER, LED SCANNER, 10-30 VDC, 1NO/1NC, (18589)
    ✓ IN STOCK!
    Buy Surplus As Low As $168.00
    $168.00
    BANNER ENGINEERING SM51EB6

    BANNER ENGINEERING

    SM51EB6

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC, HI-POWER EMITTER, 10-30VDC, 2M CABLE, (18587)
    ✓ IN STOCK!
    Buy Surplus As Low As $93.32
    $93.32
    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 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 SM812LV

    BANNER ENGINEERING

    SM812LV

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC SCANNER, W/ BRACKET
    ✓ IN STOCK!
    Buy Surplus As Low As $34.79
    $34.79
    BANNER ENGINEERING SM912DQD

    BANNER ENGINEERING

    SM912DQD

    SENSOR, VALU-BEAM: DIFFUSE, RANGE: 760 MM, INPUT: 10-30V DC, OUTPUT: BIPOLAR: 1 NPN, 1 PNP, QUICK-DISCONNECT CONNECTOR, 25361
    ✓ IN STOCK!
    $323.00 Buy Surplus As Low As $146.61
    $146.61
    Repair Yours $300.00
    BANNER ENGINEERING SM912DSRQD

    BANNER ENGINEERING

    SM912DSRQD

    SENSOR, VALU-BEAM SERIES, DIFFUSE MODE, 380 MM MAX. SENSING RANGE, INTEGRAL QD CONNECTION, 7/8" QUICK DISCONNECT, 10-30 VDC INPUT, 1X NPN, 1X PNP OUTPUTS, (26397)
    ✓ IN STOCK!
    $372.50 Buy Surplus As Low As $223.50
    $223.50
    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 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 SM912LVQD

    BANNER ENGINEERING

    SM912LVQD

    PHOTOELECTRIC SENSOR, VALU-BEAM: RETRO, RANGE: 0.15 - 0.9 M, INPUT: 10-30 VDC, OUTPUT: BIPOLAR: 1 NPN, 1 PNP, QUICK-DISCONNECT CONNECTOR, (25336)
    ✓ IN STOCK!
    $372.50 Buy Surplus As Low As $223.50
    $223.50
    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 $156.86
    $156.86
    Repair Yours $300.00
    BANNER ENGINEERING SMA31EQD

    BANNER ENGINEERING

    SMA31EQD

    MINI-BEAM: EMITTER; RANGE: 3 M; INPUT: 24-240 VAC; OUTPUT: NOT APPLICABLE - NO OUTPUTS; MICRO 3-PIN INTEGRAL QD, FOR RECEIVER SEE PART # SM2A31RQD, (26842)
    ✓ IN STOCK!
    $155.00 Buy Surplus As Low As $93.00
    $93.00
    BANNER ENGINEERING SMA912D

    BANNER ENGINEERING

    SMA912D

    OPTICAL PHOTOELECTRIC SENSOR, AC SCANNER, 25177
    ✓ IN STOCK!
    $456.25 Buy Surplus As Low As $209.36
    $209.36
    Repair Yours $300.00
    ALLEN BRADLEY 194L-HE8G-175

    ALLEN BRADLEY

    194L-HE8G-175

    CONTROL AND LOAD SWITCHES, SERIES 194L, SCREW-MOUNTING HANDLE, 90 MM X 90 MM, DISC/LOCKABLE TYPE LEGEND PLATE, GREY/BLACK, MARKING - O-I
    ✓ IN STOCK!
    Buy Surplus As Low As $48.69
    $48.69
    ALLEN BRADLEY 840-4A1

    ALLEN BRADLEY

    840-4A1

    AUTOMATIC FLOAT SWITCH FLOAT OPERATOR ASSEMBLY, DOUBLE ARM LEVER, DOUBLE PULLEY OR SINGLE-SHEAVE WHEEL, BASE-MOUNTED, STYLE A - INDUSTRIAL SWITCH, LOW OPERATING FORCE, CONVERTABLE FOR TANK O ...
    ✓ IN STOCK!
    Buy Surplus As Low As $895.34
    $895.34
    ALLEN BRADLEY 845H-SJDZ24CMY1C

    ALLEN BRADLEY

    845H-SJDZ24CMY1C

    DISCONTINUED BY MANUFACTURER, INCREMENTAL ENCODER, BULLETIN 845H, SQUARE FLANGE, 3/8 INCH SHAFT, 8-24 V DC UNREGULATED, DLD 5V DC RS-422, 500 PPR, AXIAL CONNECTOR (END), WITH MATING CONNECTO ...
    ✓ IN STOCK!
    Buy Surplus As Low As $1,419.40
    $1,419.40
    Repair Yours $1,375.00
    ALLEN BRADLEY 42BA-S1LPAG-A2

    ALLEN BRADLEY

    PHOTOSWITCH

    42BA-S1LPAG-A2

    DISCONTINUED BY MANUFACTURER 08/31/2018, PHOTOELECTRIC SENSOR, RECTANGULAR, 200 MM, PNP, 2M CABLE, 12-24 VDC, 33 MA, 13.4 X 25 X 35 MM
    ✓ IN STOCK!
    Buy Surplus As Low As $150.38
    $150.38
    ALLEN BRADLEY 42DRF-5400

    ALLEN BRADLEY

    PHOTOSWITCH

    42DRF-5400

    PHOTOELECTRIC SERIES 5000 BLUE LINE
    ✓ IN STOCK!
    Buy Surplus As Low As $398.84
    $398.84
    Repair Yours $300.00
    ALLEN BRADLEY 42EF-B1MNBC-A2

    ALLEN BRADLEY

    42EF-B1MNBC-A2

    PHOTOELECTRIC SENSOR, 50 MM, BACKGROUND SURPRESSION SENSOR, DC, NPN, 6.5FT CABLE
    ✓ IN STOCK!
    Buy Surplus As Low As $85.40
    $85.40
    ALLEN BRADLEY 42GTC-9203-QD

    ALLEN BRADLEY

    42GTC-9203-QD

    SENSOR, PHOTOELECTRIC, CLEARSIGHT 9000, TIMING, CLEAR OBJECT, AC/DC - MOSFET, 4 PIN DC, MINI QD
    ✓ IN STOCK!
    Buy Surplus As Low As $216.00
    $216.00
    ALLEN BRADLEY 42KA-S2JNSA-A2

    ALLEN BRADLEY

    42KA-S2JNSA-A2

    ULTRA MINI PHOTO SENSOR, SIDE THROUGH HOLE, SHARP CUT OFF DIFFUSE, VISIBLE RED, 23.00 EA, MANUALLY ADJUSTABLE, NPN, DC - LIGHT OPERATE, 2 M (6.5 FT) CABLE SPEC SHEET
    ✓ IN STOCK!
    Buy Surplus As Low As $80.47
    $80.47
    ALLEN BRADLEY 42KB-D2LNSG-A2

    ALLEN BRADLEY

    42KB-D2LNSG-A2

    MICRO RECTANGULAR SENSOR, SIDE THROUGH HOLE, STANDARD DIFFUSE, VISIBLE RED, 300.00 EA, MANUALLY ADJUSTABLE, NPN, DC LO OR DO SELECTABLE, 2 M (6.5 FT) CABLE, PLASTIC, SIDE VIEW, SIDE THROUGH ...
    ✓ IN STOCK!
    Buy Surplus As Low As $50.00
    $50.00
    ALLEN BRADLEY 42LTB-5001

    ALLEN BRADLEY

    42LTB-5001

    BASE TERMINAL, FOR PHOTOELECTRIC SENSOR, MODULAR, AC, 240 VAC, RED LINE
    ✓ IN STOCK!
    Buy Surplus As Low As $24.75
    $24.75
    ALLEN BRADLEY 941201–02

    ALLEN BRADLEY

    941201–02

    DISCONTINUED BY MANUFACTURER, POWER SUPPLY REDUNDANCY CABLE, 6 PIN, FEMALE CONNECTOR, FOR 1771-P4R
    ✓ IN STOCK!
    Buy Surplus As Low As $9.69
    $9.69
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