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    Sensors & Switches / CO2 Sensor

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    Results 1-50 of 343.
    HONEYWELL C7232B1022

    HONEYWELL

    C7232B1022

    CO2 SENSOR, DCT MOUNT WITH DISPLAY
    ✓ IN STOCK!
    $650.87 Buy Surplus As Low As $494.70
    $494.70
    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 $272.00
    $272.00
    HONEYWELL HPA-U03

    HONEYWELL

    MICROSWITCH

    HPA-U03

    PHOTOELECTRIC
    ✓ IN STOCK!
    Buy Surplus As Low As $84.00
    $84.00
    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 $368.77
    $368.77
    Repair Yours $287.00
    HONEYWELL E3SRMCO

    HONEYWELL

    HONEYWELL ANALYTICS

    E3SRMCO

    REMOTE SENSOR, E3 POINT, CARBON MONOXIDE, -4 TO 122 DEGREES F
    ✓ IN STOCK!
    $648.90 Buy Surplus As Low As $371.00
    $371.00
    HONEYWELL E3SRMNO2

    HONEYWELL

    HONEYWELL ANALYTICS

    E3SRMNO2

    NO2, REMOTE SENSOR, -4/122F
    ✓ IN STOCK!
    $618.00 Buy Surplus As Low As $218.16
    $218.16
    HONEYWELL E3SRMH2

    HONEYWELL

    HONEYWELL ANALYTICS

    E3SRMH2

    HYDROGEN REMOTE SENSOR
    ✓ IN STOCK!
    $680.40 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
    $3,379.00 Buy Surplus As Low As $2,028.00
    $2,028.00
    HONEYWELL C7232A1032

    HONEYWELL

    C7232A1032

    DISCONTINUED BY MANUFACTURER, CARBON DIOXIDE SENSOR, 0/2000 PPM RANGE, 0/2-10VDC OR 0/4-20 MA ANALOG CURRENT OUTPUT, ONE NORMALLY OPEN SINGLE POLE SINGLE THROW RELAY OUTPUT, 24VAC/DC, NON DI ...
    ✓ IN STOCK!
    Buy Surplus As Low As $393.46
    $393.46
    HONEYWELL C7232B1030

    HONEYWELL

    C7232B1030

    CO2 SENSOR, DCT MOUNT WITHOUT DISPLAY
    ✓ IN STOCK!
    $653.00 Buy Surplus As Low As $392.00
    $392.00
    HONEYWELL C7232B1006

    HONEYWELL

    C7232B1006

    CO2 SENSOR DUCT MOUNT, 1-10 VDC, OUT
    ✓ IN STOCK!
    $631.00 Buy Surplus As Low As $379.00
    $379.00
    HONEYWELL C7632B1002

    HONEYWELL

    C7632B1002

    DUCT MOUNT CO2 SENSOR, WITHOUT DISPLAY
    ✓ IN STOCK!
    $531.00 Buy Surplus As Low As $193.57
    $193.57
    HONEYWELL FCO-851

    HONEYWELL

    NOTIFIER CO

    FCO-851

    DISCONTINUED BY MANUFACTURER, MULTI-CRITERIA DETECTOR, SMOKE/CO/LIGHT/FLAME/HEAT, INTELLIQUAD
    ✓ IN STOCK!
    Buy Surplus As Low As $167.53
    $167.53
    HONEYWELL MC2-XWHM-Y-NA

    HONEYWELL

    BW TECHNOLOGIES

    MC2-XWHM-Y-NA

    DISCONTINUED BY MANUFACTURER, GASALERTMICROCLIP XT DETECTORS, COMBUSTIBLE (% LEL), OXYGEN (O2), HYDROGEN SULFIDE (H2S), CARBON MONOXIDE (CO) - YELLOW HOUSING
    ✓ IN STOCK!
    Buy Surplus As Low As $533.55
    $533.55
    Repair Yours $442.85
    HONEYWELL S301D2CO

    HONEYWELL

    HONEYWELL ANALYTICS

    S301D2CO

    REMOTE CARBON MONOXIDE GAS SENSOR, FOR 301EM, 0-255 PPM MEASUREMENT RANGE, 22-27 VAC, +- 40 PPM AT 500 PPM, 4-20 MA SIGNAL OUTPUT, 4 DPDT RELAY OUTPUT
    ✓ IN STOCK!
    $1,278.00 Buy Surplus As Low As $972.00
    $972.00
    HONEYWELL SPXCDXSFXSS

    HONEYWELL

    HONEYWELL ANALYTICS

    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
    HONEYWELL SK-FIRE-CO

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    SK-FIRE-CO

    SMOKE AND CARBON MONOXIDE DETECTOR, ADDRESSABLE, WHITE, 10 YEAR LIFE SPAN
    ✓ IN STOCK!
    $294.88 Buy Surplus As Low As $202.54
    $202.54
    HONEYWELL 1508A2001

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1508A2001

    IAQPOINT CARBON DIOXIDE (CO2) MONITOR, DUCT MOUNT, ANALOG
    ✓ IN STOCK!
    $283.45 Buy Surplus As Low As $193.88
    $193.88
    Repair Yours $200.00
    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!
    $142.00 Buy Surplus As Low As $86.00
    $86.00
    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
    $155.00 Buy Surplus As Low As $93.00
    $93.00
    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
    $155.00 Buy Surplus As Low As $93.00
    $93.00
    HONEYWELL SPXCDXSB1SS

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    SPXCDXSB1SS

    SENSOR, CARBON DIOXIDE (CO2), 0-2% VOL
    $1,884.00 Buy Surplus As Low As $1,131.00
    $1,131.00
    Repair Yours $939.00
    HONEYWELL MIDAS-E-LEL

    HONEYWELL

    HONEYWELL ANALYTICS

    MIDAS-E-LEL

    SENSOR CARTRIDGE, LEL 0-100% , LEL = 4+20 MA, 4 BUTTONS, STANDARD DISPLAY, FRONT STATUS LEDS
    ✓ IN STOCK!
    $788.98 Buy Surplus As Low As $583.00
    $583.00
    HONEYWELL C7242B1012

    HONEYWELL

    C7242B1012

    CO2 MONITOR/CONTROLLER
    ✓ IN STOCK!
    $373.64 Buy Surplus As Low As $230.01
    $230.01
    Repair Yours $200.00
    HONEYWELL CO1224TR

    HONEYWELL

    GAMEWELL-FCI

    CO1224TR

    CONVENTIONAL CARBON MONOXIDE DETECTOR, 12/24 VDC, WITH SOUNDER AND TROUBLE RELAY WITH TEST FUNCTION
    $159.00 Buy Surplus As Low As $96.00
    $96.00
    Repair Yours Contact Us
    HONEYWELL 129431-L3

    HONEYWELL

    NOTIFIER CO

    129431-L3

    CARBON MONOXIDE SENSORS, SERIES S301D2CO, EXPLOSION PROOF SENSOR
    ✓ IN STOCK!
    $1,523.19 Buy Surplus As Low As $822.52
    $822.52
    HONEYWELL MIDAS-L-O2S

    HONEYWELL

    HONEYWELL ANALYTICS

    MIDAS-L-O2S

    SENSOR, O2 SENSOR CARTRIDGE, 6 X 9 X1.75
    ✓ IN STOCK!
    $1,187.55 Buy Surplus As Low As $679.00
    $679.00
    Repair Yours $564.00
    HONEYWELL 61010-1

    HONEYWELL

    61010-1

    DISCONTINUED BY MANUFACTURER, GAS SENSOR, NEMKO, IAQ POINT-D, CO2, FIXED, SINGLE, 10 VA, 0.5 AMP, 20-30 VAC, 18-30 VDC, 50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $244.94
    $244.94
    Repair Yours $203.30
    HONEYWELL C7263A1008

    HONEYWELL

    C7263A1008

    CO2/TEMP SENSOR, WALL UNIT, W/ DISPLAY
    ✓ IN STOCK!
    $570.00 Buy Surplus As Low As $342.00
    $342.00
    HONEYWELL C7233A1008

    HONEYWELL

    C7233A1008

    WALL SENSOR, CO2, W/ DISPLAY
    ✓ IN STOCK!
    $397.00 Buy Surplus As Low As $239.00
    $239.00
    HONEYWELL C7233A1024

    HONEYWELL

    C7233A1024

    CARBON DIOXIDE (CO2) SENSOR, 0-2000 PPM RANGE, WALL MOUNT, WHITE LED DISPLAY, SELECTABLE 0/2-10 VDC & 0/4-20 MA OUTPUT, SPST RELAY, NO LOGO, (REPLACES C7232A1016)
    ✓ IN STOCK!
    $448.00 Buy Surplus As Low As $269.00
    $269.00
    Repair Yours $224.00
    HONEYWELL TR50-5D

    HONEYWELL

    TR50-5D

    TEMPHUMIDCO2 IAQSENSOR CONFIG.
    ✓ IN STOCK!
    $759.00 Buy Surplus As Low As $456.00
    $456.00
    HONEYWELL 201T

    HONEYWELL

    201T

    DISCONTINUED BY MANUFACTURER, CO2 DETECTION TRANSMITTER, INPUT: 17-27 VOLT AC, 50/60 HZ, OUTPUT: 24-38 VOLT DC, 250MA@24 VOLT DC, LED INDICATORS
    ✓ IN STOCK!
    Buy Surplus As Low As $381.11
    $381.11
    HONEYWELL 1039753

    HONEYWELL

    RESIDEO

    1039753

    10YR BATTERY, CO2 ALARM W/ DIGTEMP
    ✓ IN STOCK!
    $61.00 Buy Surplus As Low As $37.00
    $37.00
    HONEYWELL 54-49-90

    HONEYWELL

    BW TECHNOLOGIES

    54-49-90

    O2 SENSOR FOR MULTI PRO
    ✓ IN STOCK!
    $532.67 Buy Surplus As Low As $316.40
    $316.40
    HONEYWELL FSCO-951

    HONEYWELL

    FSCO-951

    INTELLIGENT ADDRESSABLE CARBON MONOXIDE (CO) ONLY. FLASHSCAN, WHITE
    ✓ IN STOCK!
    $231.00 Buy Surplus As Low As $139.00
    $139.00
    HONEYWELL 50016094-001

    HONEYWELL

    50016094-001

    DISCONTINUED BY MANUFACTURER, CO2 SENSOR, 0-30000 PPM CO2 / (1) 0-5 VDC / 3 RELAY OUTPUT
    ✓ IN STOCK!
    Buy Surplus As Low As $28.88
    $28.88
    HONEYWELL C7233A1016

    HONEYWELL

    C7233A1016

    CO2 SENSOR, WALL MOUNT, NO DISPLAY, 2-10 VDC, 4-20 MA, REPLACES C7632A1004
    ✓ IN STOCK!
    $414.00 Buy Surplus As Low As $249.00
    $249.00
    HONEYWELL TR50-5N

    HONEYWELL

    TR50-5N

    INDOOR AIR QUALITY SENSOR, TR50 SERIES, DETECTION PARAMETERS: TEMPERATURE / RELATIVE HUMIDITY / CARBON DIOXIDE / PARTICULAR MATTER (PM1 PM2.5 AND PM10) & TOTAL VOLATILE ORGANIC COMPOUND
    $719.00 Buy Surplus As Low As $432.00
    $432.00
    HONEYWELL TR50-3D

    HONEYWELL

    TR50-3D

    CO2/TEMP/HUMID SENSOR,SYLKW/DIS
    ✓ IN STOCK!
    $390.00 Buy Surplus As Low As $234.00
    $234.00
    HONEYWELL C7232B1006/U

    HONEYWELL

    C7232B1006/U

    CO2 SENSOR, RANGE / 0-2000 PPM, 0/2-10 VDC OR 0/4-20MA OUTPUT, WITH DISPLAY, DUCT MOUNT
    ✓ IN STOCK!
    $569.95 Buy Surplus As Low As $389.84
    $389.84
    Repair Yours $283.83
    HONEYWELL 1039727

    HONEYWELL

    RESIDEO

    1039727

    BATT OP CO2 ALARM W/ DIGITAL DISPLAY
    ✓ IN STOCK!
    $49.00 Buy Surplus As Low As $30.00
    $30.00
    HONEYWELL CO250B

    HONEYWELL

    RESIDEO

    CO250B

    BATTERY OPER CO2 ALARM
    ✓ IN STOCK!
    $33.00 Buy Surplus As Low As $20.00
    $20.00
    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 ...
    Buy Surplus As Low As $247.20
    $247.20
    Repair Yours $200.00
    HONEYWELL C7232A1024

    HONEYWELL

    C7232A1024

    DISCONTINUED BY MANUFACTURER, CARBON DIOXIDE (CO2) SENSOR, 0-2000 PPM RANGE, WALL MOUNT, LCD DISPLAY, SELECTABLE 0/2-10 VDC & 0/4-20 MA OUTPUT, SPST RELAY, 24 VAC/DC, NO LOGO, (DIRECT REPLAC ...
    Buy Surplus As Low As $240.00
    $240.00
    Repair Yours $200.00
    HONEYWELL VA301IRFSR407

    HONEYWELL

    HONEYWELL ANALYTICS

    VA301IRFSR407

    GAS SENSOR
    Buy Surplus As Low As $1,200.00
    $1,200.00
    Repair Yours $1,000.00
    HONEYWELL 90DM4DTNETCRD2000

    HONEYWELL

    HONEYWELL ANALYTICS

    90DM4DTNETCRD2000

    CO2 GASMONITOR DUCT MOUNT
    $488.00 Buy Surplus As Low As $293.00
    $293.00
    Repair Yours $244.00
    HONEYWELL 90DM4DTNETCRD50000

    HONEYWELL

    HONEYWELL ANALYTICS

    90DM4DTNETCRD50000

    CO2 GASMONITOR DUCT MOUNT
    $167.00 Buy Surplus As Low As $100.00
    $100.00
    Repair Yours Contact Us
    HONEYWELL 90DM4SMNETCRD2000

    HONEYWELL

    HONEYWELL ANALYTICS

    90DM4SMNETCRD2000

    CO2 GASMONITOR 2000 PPM
    $374.00 Buy Surplus As Low As $225.00
    $225.00
    Repair Yours $200.00
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