Product Search

    SEARCH NOW FOR ALL YOUR RADWELL SOLUTIONS

    Radwell is here to supply you with all your plant floor needs.

    Sensors & Switches / CO2 Sensor

    Radwell is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder.

    Filter Results
    Results 1-50 of 879.
    GENERAL MONITORS INC 10001-1

    GENERAL MONITORS INC

    10001-1

    STANDARD INDUSTRIAL COMBUSTIBLE GAS SENSOR, 3 WIRE ALUMINUM, CSA, FM APPROVED, 0-100% MEASURING RANGE, CONTINUOUS DIFFUSION, LOW TEMPERATURE CATALYTIC BEAD, 300MA DC SENSOR DRIVE
    ✓ IN STOCK!
    $1,380.00 Buy Surplus As Low As $828.00
    $828.00
    KYNAR LMS-15K

    KYNAR

    LMS-15K

    SENSOR 120/220V
    ✓ IN STOCK!
    Buy Surplus As Low As $264.00
    $264.00
    Repair Yours $200.00
    HONEYWELL C7232A1016

    HONEYWELL

    C7232A1016

    DISCONTINUED BY MANUFACTURER, CARBON DIOXIDE (CO2) SENSOR, 0-2000 PPM RANGE, WALL MOUNT, WITHOUT DISPLAY, SELECTABLE 0/2-10 VDC & 0/4-20 MA OUTPUT, SPST RELAY, 24 VAC/DC, HONEYWELL LOGO, (RE ...
    ✓ IN STOCK!
    Buy Surplus As Low As $240.00
    $240.00
    Repair Yours $200.00
    VERIS CWLSHTA

    VERIS

    CWLSHTA

    CO2 SENSOR, WALL, LCD, RH 2%, T-TRANSMITTER, 50-95F
    ✓ IN STOCK!
    $1,368.00 Buy Surplus As Low As $1,040.00
    $1,040.00
    HONEYWELL C7232B1022

    HONEYWELL

    C7232B1022

    CO2 SENSOR, DCT MOUNT WITH DISPLAY
    ✓ IN STOCK!
    $671.00 Buy Surplus As Low As $510.00
    $510.00
    HONEYWELL C7632A1004

    HONEYWELL

    C7632A1004

    DISCONTINUED BY MANUFACTURER, CO2 SENSOR, WALL MOUNT, WITHOUT DISPLAY OR RELAY, 24 V AC/DC, +/-20%, 50/60 HZ, 0-10 VDC FOR 0-2000 PPM FIXED ANALOG OUTPUT, REPLACED BY C7233A1016
    ✓ IN STOCK!
    Buy Surplus As Low As $221.62
    $221.62
    GENERAL ELECTRIC CR215DGR2

    GENERAL ELECTRIC

    CR215DGR2

    LIMIT SWITCH PROXIMITY RECEPTACLE 3TERMINAL
    ✓ IN STOCK!
    Buy Surplus As Low As $34.68
    $34.68
    HONEYWELL HPA-U03

    HONEYWELL

    MICROSWITCH

    HPA-U03

    PHOTOELECTRIC
    ✓ IN STOCK!
    Buy Surplus As Low As $84.00
    $84.00
    AIRTEST TR9291-BC

    AIRTEST

    TR9291-BC

    WALL SENSOR CO2 0-10V
    ✓ IN STOCK!
    $207.00 Buy Surplus As Low As $158.00
    $158.00
    Repair Yours $200.00
    LEGRAND CIT-105

    LEGRAND

    WATT STOPPER

    CIT-105

    OCCUPANCY SENSOR 24VDC PASSIVE INFRARED
    ✓ IN STOCK!
    $86.40 Buy Surplus As Low As $57.60
    $57.60
    DRAGER 4543405

    DRAGER

    4543405

    DISCONTINUED BY MANUFACTURER, GAS DETECTOR HEAD, 16-30VDC, 30MA, 3/4IN PIPE, POLYTRON, NO SENSOR
    ✓ IN STOCK!
    Buy Surplus As Low As $970.00
    $970.00
    Repair Yours $800.00
    AUTOMATION COMPONENTS INC A/CO-2010-D

    AUTOMATION COMPONENTS INC

    A/CO-2010-D

    CARBON DIOXIDE GAS DETECTOR-DUCT, CO2 TRANSMITTER (0-10VDC ONLY)
    ✓ IN STOCK!
    Buy Surplus As Low As $275.62
    $275.62
    Repair Yours $207.96
    HONEYWELL CO1224T

    HONEYWELL

    GAMEWELL-FCI

    CO1224T

    CONVENTIONAL CARBON MONOXIDE DETECTOR, 12/24 VDC, WITH SOUNDER AND TROUBLE RELAY WITH TEST FUNCTION
    ✓ IN STOCK!
    $108.00 Buy Surplus As Low As $65.00
    $65.00
    HONEYWELL C7242A-1014

    HONEYWELL

    C7242A-1014

    DISCONTINUED BY MANUFACTURER, CO2 MONITOR/CONTROLLER, ANALOG OUTPUT 0-10VDC, WALL MOUNT, DIGITAL DISPLAY, 15-29VDC/VAC, 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $442.00
    $442.00
    Repair Yours $287.00
    GENERAL ELECTRIC T8100-D

    GENERAL ELECTRIC

    T8100-D

    CO2 SENSOR, LCD DISPLAY, SINGLE CHANNEL, T8100 SERIES, WALL MOUNT, 0-50 C OPERATING TEMPERATURE, WEATHERPROOF ENCLOSURE, WHITE
    ✓ IN STOCK!
    $551.00 Buy Surplus As Low As $420.00
    $420.00
    Repair Yours $267.00
    HONEYWELL E3SRMCO

    HONEYWELL

    VULCAIN

    E3SRMCO

    REMOTE SENSOR, E3 POINT, CARBON MONOXIDE, -4 TO 122 DEGREES F
    ✓ IN STOCK!
    $618.00 Buy Surplus As Low As $371.00
    $371.00
    HONEYWELL E3SRMNO2

    HONEYWELL

    VULCAIN

    E3SRMNO2

    NO2, REMOTE SENSOR, -4/122F
    ✓ IN STOCK!
    $618.00 Buy Surplus As Low As $242.40
    $242.40
    HONEYWELL E3SRMH2

    HONEYWELL

    VULCAIN

    E3SRMH2

    HYDROGEN REMOTE SENSOR
    ✓ IN STOCK!
    $648.00 Buy Surplus As Low As $389.00
    $389.00
    HONEYWELL SPXCDULNRXM

    HONEYWELL

    NOTIFIER CO

    SPXCDULNRXM

    SENSEPOINT XCD TRANSMITTERS, CLASS I, DIV. 1: UL APPROVAL, COMBUSTIBLE EXPLOSION PROOF TRANSMITTER (IR), METHANE (CH4) 4-20 MA, 3 RELAYS, MODBUS, 0-100% LEL ALUMINUM ENCLOSURE
    ✓ IN STOCK!
    $3,445.00 Buy Surplus As Low As $2,067.00
    $2,067.00
    INGERSOLL RAND X13790422-010

    INGERSOLL RAND

    TRANE

    X13790422-010

    DISCONTINUED BY MANUFACTURER, CO2 ZONE SENSOR, WALL MOUNT, BAYSENS251A, REPLACED BY SEN1564
    ✓ IN STOCK!
    Buy Surplus As Low As $673.00 $336.30
    $673.00 $336.30
    Repair Yours $553.00
    DWYER CDT-2W4B

    DWYER

    CDT-2W4B

    CO2 TRANSMITTER, CDT SERIES, 10K TYPE, 4-20 MA, 0-5/10 VDC
    ✓ IN STOCK!
    $143.93 Buy New $143.93
    $86.36
    Repair Yours Contact Us
    ROBERTS GORDON 02713200

    ROBERTS GORDON

    02713200

    ELECTRODE ASSEMBLY, REPLACEMENT KIT, CRV B & E SERIES
    ✓ IN STOCK!
    $107.00 Buy Surplus As Low As $65.00
    $65.00
    HONEYWELL SPXCDXSFXSS

    HONEYWELL

    VULCAIN

    SPXCDXSFXSS

    SENSOR, COMBUSTIBLE, FLAMMABLE CATALYTIC BEAD, 0-100% LEL (20.0 TO 100.0% LEL)
    ✓ IN STOCK!
    $1,171.00 Buy Surplus As Low As $703.00
    $703.00
    KIDDE CO120X

    KIDDE

    CO120X

    CARBON MONOXIDE RELAY MODULE, ELECTRICAL RATING 120 VAC, 60 HZ, 0.08 AMP, CONTACT RATING 120 VAC, 10 AMP, NON INDUCTIVE, 30 VDC, 5 AMP
    ✓ IN STOCK!
    $24.24 Buy New $24.24
    $16.00
    INGERSOLL RAND SEN1782

    INGERSOLL RAND

    TRANE

    SEN1782

    DUCT MT CO2 SENSOR, NO DISPLAY
    ✓ IN STOCK!
    $685.00 Buy Surplus As Low As $411.00
    $411.00
    SIEMENS QPM2100

    SIEMENS

    SIEMENS INDUSTRY

    QPM2100

    SENSOR, DUCT AIR QUALITY, CO2, 0-10V, 0-2000 PPM CO2 MEASURING RANGE
    ✓ IN STOCK!
    $401.15 Buy New $401.15
    $240.69
    SIEMENS OOH941

    SIEMENS

    PYROTRONICS

    OOH941

    HEAT DETECTOR, DUAL OPTICAL, CO2 SENSOR, LOW TEMP WARNING SIGNAL AT 40 DEGREES F
    ✓ IN STOCK!
    $192.00 Buy Surplus As Low As $146.00
    $146.00
    SIEMENS OOHC941

    SIEMENS

    PYROTRONICS

    OOHC941

    DUAL OPTICAL, HEAT, CARBON MONOXIDE DETECTOR, 2 OPTICAL TRANSMITTERS, 2 THERMAL SENSORS, 1 OPTICAL RECEIVER, 1 CO SENSOR
    ✓ IN STOCK!
    $310.00 Buy Surplus As Low As $186.00
    $186.00
    Repair Yours $200.00
    KIDDE-FENWAL, LLC 70030380

    KIDDE-FENWAL, LLC

    KIDDE FIRE SYSTEMS

    70030380

    CO2 PRESSURE OPERATED SIREN (AVAILABILITY LIMITED TO QUANTITY ON HAND)
    ✓ IN STOCK!
    $1,783.43 Buy Surplus As Low As $1,355.41
    $1,355.41
    VERIS CDLSHTH

    VERIS

    CDLSHTH

    CO2 SENSOR, DUCT TRANSFORMER, LCD, RH, TEMPERATURE, 10K T3
    ✓ IN STOCK!
    $667.00 Buy Surplus As Low As $507.00
    $507.00
    SENVA C02D-A1

    SENVA

    C02D-A1

    DISCONTINUED BY MANUFACTURER, CO2 DUCT SENSOR, LCD DISPLAY WITH FIELD CALIBRATION MENU, 2000/5000 PPM CO2, INTEGRATED SET-POINT RELAY, FIELD REPLACEABLE NDIR ELEMENT, 12-30VDC/24VAC, 1 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $149.00
    $149.00
    Repair Yours $200.00
    SIEMENS QPA2060

    SIEMENS

    SIEMENS INDUSTRY

    QPA2060

    ROOM AIR QUALITY SENSOR, ROOM CO2, TEMPERATURE SENSOR, 0-10 VOLT
    ✓ IN STOCK!
    $396.44 Buy New $396.44
    $301.30
    SIEMENS QPA2284.FWSC

    SIEMENS

    SIEMENS INDUSTRY

    QPA2284.FWSC

    ROOM AIR QUALITYSENSOR, FOR USE WITH TEC ONLY, 0-2000 PPM CO2 RANGE, HUMIDITY (P1), TEMPERATURE (P1), RJ-11 CONNECTION TYPE, DISPLAY, SETPOINT ADJUSTMENT, OVERRIDE, TOOL PORT
    ✓ IN STOCK!
    $556.00 Buy New $556.00
    $333.60
    Repair Yours $276.89
    EDWARDS SIGNALING SIGA2-PCOS

    EDWARDS SIGNALING

    SIGA2-PCOS

    DISCONTINUED BY MANUFACTURER, INTELLIGENT PHOTOELECTRIC DETECTOR, W/ CARBON MONOXIDE SENSOR, DIMENSIONS 5X5X5 IN, NO REPLACEMENT
    ✓ IN STOCK!
    Buy Surplus As Low As $190.00
    $190.00
    FIRST ALERT CO400

    FIRST ALERT

    CO400

    CARBON MONOXIDE ALARM
    ✓ IN STOCK!
    Buy Surplus As Low As $17.10
    $17.10
    SCHNEIDER ELECTRIC AM-112

    SCHNEIDER ELECTRIC

    SQUARE D

    AM-112

    CRANK ARM 3/8IN DIA
    $21.00 Buy Surplus As Low As $13.00
    $13.00
    DRAGER 4543060

    DRAGER

    4543060

    DISCONTINUED BY MANUFACTURER, FIXED GAS DETECTOR, POLYTRON, 2XP EX, SENSING HEAD, WITH CATALYTIC BEAD SENSOR, WITHOUT RELAYS, ATEX, CSA
    ✓ IN STOCK!
    Buy Surplus As Low As $699.45
    $699.45
    Repair Yours $648.00
    BOSCH 0258017025

    BOSCH

    REXROTH

    0258017025

    OXYGEN SENSOR 5WIRE LS 17025
    ✓ IN STOCK!
    $121.00 Buy Surplus As Low As $73.00
    $73.00
    UNITED TECHNOLOGIES 33ZCT55C02

    UNITED TECHNOLOGIES

    CARRIER

    33ZCT55C02

    DISCONTINUED BY MANUFACTURER, SENSOR, CO2 AND SPACE TEMPERATURE, W/ OVERRIDE, SINGLE BEAM ABSORPTION INFRARED SENSING, 0 TO 2000 PPM RANGE, 10 K OHM THERMISTOR, 18-30 VAC, 50/60 HZ, 2.75 VA ...
    ✓ IN STOCK!
    Buy Surplus As Low As $1,382.00
    $1,382.00
    Repair Yours $590.00
    HONEYWELL CO1224T

    HONEYWELL

    SYSTEM SENSOR

    CO1224T

    CARBON MONOXIDE DETECTOR, W/TEST, 4 WIRE, 12-24 V DC, 0.5 AMP, 20 MA IN STANDBY, 40 MA IN ALARM
    ✓ IN STOCK!
    $131.00 Buy Surplus As Low As $79.00
    $79.00
    HONEYWELL CO1224T

    HONEYWELL

    NOTIFIER CO

    CO1224T

    NOTIFIER PLUG-IN SMOKE DETECTORS , CONVENTIONAL CARBON MONOXIDE DETECTOR, 12/24 VDC, WITH SOUNDER AND TROUBLE RELAY WITH TEST FUNCTION; UL2075 LISTED
    $151.00 Buy Surplus As Low As $91.00
    $91.00
    HONEYWELL CO1224TR

    HONEYWELL

    NOTIFIER CO

    CO1224TR

    NOTIFIER PLUG-IN SMOKE DETECTORS , CONVENTIONAL CARBON MONOXIDE DETECTOR, 12/24 VDC, WITH SOUNDER AND TROUBLE RELAY WITH TEST FUNCTION, ROUND; UL2075 LISTED
    $151.00 Buy Surplus As Low As $91.00
    $91.00
    TELEDYNE ANALYTICAL INSTRUMENTS C40371-F1R

    TELEDYNE ANALYTICAL INSTRUMENTS

    C40371-F1R

    GAS SENSOR, CARBON MONOXIDE, 3-PIN, CELL STYLE
    ✓ IN STOCK!
    $162.95 Buy Surplus As Low As $123.84
    $123.84
    KEYENCE CORP AP-43

    KEYENCE CORP

    AP-43

    SENSOR HEAD, POSITIVE PRESSURE TYPE, 1 MPA
    ✓ IN STOCK!
    $236.00 Buy Surplus As Low As $143.00
    $143.00
    VERIS CWE

    VERIS

    CWE

    DISCONTINUED BY MANUFACTURER, CO2 SENSOR, 0-2000PPM SENSING RANGE, NON-DISPERSIVE INFRARED SENSING TYPE, WALL MOUNT, ABS PLASTIC MATERIAL, NO LCD DISPLAY INTERFACE, 20-30VDC/24VAC 50/60HZ 0. ...
    ✓ IN STOCK!
    Buy Surplus As Low As $480.00
    $480.00
    Repair Yours $312.00
    SCHUNK FPS-A5

    SCHUNK

    FPS-A5

    POSITION SENSOR 24VDC 10MIN 30MAX
    ✓ IN STOCK!
    $267.24 Buy Surplus As Low As $160.34
    $160.34
    JOHNSON CONTROLS CD-W00-00-1

    JOHNSON CONTROLS

    CD-W00-00-1

    DISCONTINUED BY MANUFACTURER 10/26/2015, CO2 SENSOR, WHITE, 20-30 VAC, 23-113 DEGREE F, INDOOR, WALL MOUNT, REPLACED BY CD-W00-00-2
    ✓ IN STOCK!
    Buy Surplus As Low As $249.00
    $249.00
    Repair Yours $210.00
    LENNOX 87N53

    LENNOX

    87N53

    DISCONTINUED BY MANUFACTURER, CO2 SENSOR, WALL MOUNTED, SERIES T8100, NO DISPLAY
    ✓ IN STOCK!
    Buy Surplus As Low As $449.26
    $449.26
    ZELLWEGER 2110B2073

    ZELLWEGER

    2110B2073

    GAS SENSOR APEX
    ✓ IN STOCK!
    Buy Surplus As Low As $753.92
    $753.92
    Repair Yours $494.02
    AMPROBE CM100

    AMPROBE

    CM100

    CARBON MONOXIDE METER W/ADJUSTABLE CO LEVELS, (3311826)
    ✓ IN STOCK!
    $400.00 Buy Surplus As Low As $240.00
    $240.00
    Next
    1 2 3 4 5 6 7 8 9 10 11