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    Results 1-50 of 76.
    HONEYWELL S301-IRF-R123

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    S301-IRF-R123

    R123 REFRIGERANT GAS SENSOR
    ✓ IN STOCK!
    $2,747.00 Buy Surplus As Low As $1,649.00
    $1,649.00
    Repair Yours $1,369.00
    HONEYWELL 9602-0205

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    9602-0205

    GAS DETECTOR, SATELLITE XT SERIES, 4-20 MA, WITHOUT RELAYS, DIN
    ✓ IN STOCK!
    $3,963.00 Buy Surplus As Low As $2,021.30
    $2,021.30
    Repair Yours $1,677.68
    HONEYWELL S301-IRF-R22

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    S301-IRF-R22

    R22 REFRIGERANT GAS SENSOR, MEASUREMENT RANGE: 0-1000 PPM, OUTPUT: 4-20 MA, 22-27 VAC @ 48 VA 50/60 HZ / 22-38 VDC @ 2 A MAX
    $6,723.00 Buy Surplus As Low As $4,035.00
    $4,035.00
    Repair Yours $2,490.00
    HONEYWELL S301-IRF-R134A

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    S301-IRF-R134A

    REFRIGERANT GAS SENSOR, 10 VDC, 700 MA, FOR USE WITH 301-EM (0-100 PPM)
    $2,848.00 Buy Surplus As Low As $1,709.00
    $1,709.00
    Repair Yours $1,350.00
    HONEYWELL MIDAS-E-HFX

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    MIDAS-E-HFX

    DISCONTINUED BY MANUFACTURER, SENSOR CARTRIDGES, BORON TRIFLUORIDE (BF3), HYDROGEN FLUORIDE (HF), NITROGEN TRIFLUORIDE (NF3),TUNGSTEN HEXAFLUORIDE (WF6), 0-12 PPM MEASURING RANGE, 1.5 PPM MI ...
    Buy Surplus As Low As $480.00
    $480.00
    Repair Yours $400.00
    HONEYWELL 00705-A-1733

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    00705-A-1733

    COMBUSTIBLE GAS SENSOR (0-100% LEL) IN ALUMINUM ENCLOSURE. 3/4" NPT MOUNTING THREAD. MINIMUM ALARM LEVEL 5% LEL. MV BRIDGE OUTPUT. SUITABLE FOR TEMPERATURES TO 131 F. COMPATIBLE WITH HONEYWE ...
    $577.00 Buy Surplus As Low As $347.00
    $347.00
    Repair Yours $289.00
    HONEYWELL 129426-L3

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    129426-L3

    COMBUSTIBLE EXPLOSION PROOF SENSOR - (GAIN 1.3-1.599 / HYDROGEN)
    $1,151.00 Buy Surplus As Low As $691.00
    $691.00
    Repair Yours $574.00
    HONEYWELL S301-IRF-R11

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    S301-IRF-R11

    R11 REFRIGERANT GAS SENSOR
    $2,848.00 Buy Surplus As Low As $1,709.00
    $1,709.00
    Repair Yours $1,419.00
    HONEYWELL S301-IRF-R125

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    S301-IRF-R125

    R125 REFRIGERANT GAS SENSOR
    $2,848.00 Buy Surplus As Low As $1,709.00
    $1,709.00
    Repair Yours $1,419.00
    HONEYWELL TPPLBDWA2NNNNNN

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    TPPLBDWA2NNNNNN

    TPPL CONTROLLER BASIC, WALL MOUNT, DC POWERED, 2 X MA INPUT
    $3,728.00 Buy Surplus As Low As $2,237.00
    $2,237.00
    Repair Yours $1,857.00
    HONEYWELL ECO-D-B-43

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    ECO-D-B-43

    HYDROGEN SULFIDE (H2S) 0-100 PPM
    $4,264.00 Buy Surplus As Low As $2,559.00
    $2,559.00
    Repair Yours $2,124.00
    HONEYWELL ECO-SC-14

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    ECO-SC-14

    HYDROGEN (H2) 0-2000 PPM
    $2,772.00 Buy Surplus As Low As $1,664.00
    $1,664.00
    Repair Yours $1,382.00
    HONEYWELL M-700037

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700037

    AIRSCAN™ INFRARED SENSOR, R422D 0/3000 PPM, ATMOS, NEMA 1 ENCLOSURE
    $2,888.00 Buy Surplus As Low As $1,733.00
    $1,733.00
    Repair Yours $1,439.00
    HONEYWELL M-700067

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700067

    AIRSCAN™ INFRARED SENSOR, R407A 0/3000 PPM, ATMOS, NEMA 1 ENCLOSURE
    $2,888.00 Buy Surplus As Low As $1,733.00
    $1,733.00
    Repair Yours $1,439.00
    HONEYWELL M-700087

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700087

    AIRSCAN™ INFRARED SENSOR, R410A 0/3000 PPM, ATMOS, NEMA 1 ENCLOSURE
    $2,888.00 Buy Surplus As Low As $1,733.00
    $1,733.00
    Repair Yours $1,439.00
    HONEYWELL M-700261

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700261

    AIRSCAN™ INFRARED SENSOR,HFO1234YF 0/500 PPM, NEMA 1 ENCLOSURE CARB COMPLIANT
    $2,596.00 Buy Surplus As Low As $1,558.00
    $1,558.00
    Repair Yours $1,294.00
    HONEYWELL M-700267

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700267

    AIRSCAN™ INFRARED SENSOR,HFO1234YF 0/1000 PPM, ATMOS, NEMA 1 ENCLOSURE
    $2,923.00 Buy Surplus As Low As $1,754.00
    $1,754.00
    Repair Yours $1,456.00
    HONEYWELL M-700268

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700268

    AIRSCAN™ INFRARED SENSOR,HFO1234YF 0/1000 PPM, STAINLESS STEEL ENCLOSURE
    $2,888.00 Buy Surplus As Low As $1,733.00
    $1,733.00
    Repair Yours $1,439.00
    HONEYWELL M-700269

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700269

    AIRSCAN™ INFRARED SENSOR,HFO1234YF 0/1000 PPM, ATMOS, STAINLESS STEEL ENCLOSURE
    $3,433.00 Buy Surplus As Low As $2,060.00
    $2,060.00
    Repair Yours $1,710.00
    HONEYWELL M-700271

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700271

    AIRSCAN™ INFRARED SENSOR,HFO1234YF 0/3000 PPM, NEMA 1 ENCLOSURE
    $2,374.00 Buy Surplus As Low As $1,425.00
    $1,425.00
    Repair Yours $1,183.00
    HONEYWELL M-700272

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700272

    AIRSCAN™ INFRARED SENSOR,HFO1234YF 0/3000 PPM, ATMOS, NEMA 1 ENCLOSURE
    $2,923.00 Buy Surplus As Low As $1,754.00
    $1,754.00
    Repair Yours $1,456.00
    HONEYWELL SPXCDXSG1SS

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    SPXCDXSG1SS

    HYDROGEN (H2) 0-1000 PPM ONLY
    $1,010.00 Buy Surplus As Low As $606.00
    $606.00
    Repair Yours $503.00
    HONEYWELL ZDINPSUX1

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    ZDINPSUX1

    DIN RAIL MOUNTED PSU. INPUT: 85-265VAC, 50/60HZ. OUTPUT: 24VDC, 1A CSA, UL/UR, CE APPROVED
    $106.00 Buy Surplus As Low As $64.00
    $64.00
    HONEYWELL -SC-O2

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    -SC-O2

    XCL/XRL SENSOR-O2
    $311.00 Buy Surplus As Low As $187.00
    $187.00
    Repair Yours $200.00
    HONEYWELL XCL-LB-H2-RA

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-LB-H2-RA

    H2 1000PPM, MA RELAYS
    $4,543.00 Buy Surplus As Low As $2,726.00
    $2,726.00
    Repair Yours $2,263.00
    HONEYWELL XCL-LB-H2-RM

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-LB-H2-RM

    H2 1000PPM, MODBUS RELAYS
    $4,740.00 Buy Surplus As Low As $2,844.00
    $2,844.00
    Repair Yours $2,361.00
    HONEYWELL XCL-LB-H2S-RA

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-LB-H2S-RA

    H2S 50PPM, MA RELAYS
    $4,015.00 Buy Surplus As Low As $2,409.00
    $2,409.00
    Repair Yours $2,000.00
    HONEYWELL XCL-LB-H2S-RM

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-LB-H2S-RM

    H2S 50PPM, MODBUS RELAYS
    $4,015.00 Buy Surplus As Low As $2,409.00
    $2,409.00
    Repair Yours $2,000.00
    HONEYWELL XCL-LB-O2-RA

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-LB-O2-RA

    OXYGEN 0 TO 25 %V/V, MA RELAYS
    $3,062.00 Buy Surplus As Low As $1,838.00
    $1,838.00
    Repair Yours $1,526.00
    HONEYWELL XCL-LB-O2-RM

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-LB-O2-RM

    OXYGEN 0 TO 25 %V/V, MODBUS RELAYS
    $3,062.00 Buy Surplus As Low As $1,838.00
    $1,838.00
    Repair Yours $1,526.00
    HONEYWELL XCL-VEA-CAL

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-VEA-CAL

    VESDA CAP CAL/FLOW SP XCL
    $126.00 Buy Surplus As Low As $76.00
    $76.00
    Repair Yours $200.00
    HONEYWELL XCL-VEA-CH4-RA

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-VEA-CH4-RA

    VESDA CH4 0-100%LEL 4-20MA REL XCL VEA
    $2,536.00 Buy Surplus As Low As $1,522.00
    $1,522.00
    Repair Yours $1,264.00
    HONEYWELL XCL-VEA-CH4-RA-5

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-VEA-CH4-RA-5

    VESDA CH4 0-100%LEL 4-20MA REL XCL VEA
    $6,846.00 Buy Surplus As Low As $4,108.00
    $4,108.00
    Repair Yours $3,410.00
    HONEYWELL XCL-VEA-CH4-RM

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-VEA-CH4-RM

    VESDA CH4 0-100%LEL MODBUS REL XCL VEA
    $2,667.00 Buy Surplus As Low As $1,601.00
    $1,601.00
    Repair Yours $1,329.00
    HONEYWELL XCL-VEA-H2-RA

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-VEA-H2-RA

    VESDA H2 1000PPM 4-20MA REL XCL VEA
    $4,477.00 Buy Surplus As Low As $2,687.00
    $2,687.00
    Repair Yours $2,231.00
    HONEYWELL XCL-XRL-SC-H2

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    XCL-XRL-SC-H2

    VESDA SENSEPOINT XCL/XRL REPLACEMENT SENSOR - H2 1000 PPM
    $455.00 Buy Surplus As Low As $273.00
    $273.00
    Repair Yours $227.00
    HONEYWELL SPXCDULNTXFM

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    SPXCDULNTXFM

    TRANSMITTER, SENSEPOINT XCD GAS DETECTOR, TRANSMITTER ONLY, 16-32 VDC INPUT VOLTAGE, 24 VDC NOMINAL, RELAY OUTPUT, RS485/MODBUS RTU COMMUNICATION, PLATE/PIPE MOUNT, IP66 ENCLOSURE
    $1,958.00 Buy Surplus As Low As $1,175.00
    $1,175.00
    Repair Yours $976.00
    HONEYWELL ECO-SC-11

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    ECO-SC-11

    GAS DETECTION SENSOR, CARTRIDGE, HYDROGEN (H2) 0-100% LEL, INTEGRAL ALARM STATUS LEDS, 4-20 MA ANALOG OUTPUTS, REMOTE RESET
    $1,562.00 Buy Surplus As Low As $938.00
    $938.00
    HONEYWELL S301-IRF-R404A

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    S301-IRF-R404A

    R404A REFRIGERANT GAS SENSOR
    $2,848.00 Buy Surplus As Low As $1,709.00
    $1,709.00
    Repair Yours $1,419.00
    HONEYWELL S301-IRF-R407C

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    S301-IRF-R407C

    R407C REFRIGERANT GAS SENSOR
    $2,848.00 Buy Surplus As Low As $1,709.00
    $1,709.00
    Repair Yours $1,419.00
    HONEYWELL S301-IRF-R4310

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    S301-IRF-R4310

    R4310 REFRIGERANT GAS SENSOR
    $3,126.00 Buy Surplus As Low As $1,876.00
    $1,876.00
    Repair Yours $1,558.00
    HONEYWELL TPPLBAWA8DNNNNN

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    TPPLBAWA8DNNNNN

    TPPL CONTROLLER BASIC, WALL MOUNT, AC115/220 150W, 8 X MA INPUT WITH 24 X RELAY OUTPUT
    $8,696.00 Buy Surplus As Low As $5,218.00
    $5,218.00
    Repair Yours $4,331.00
    HONEYWELL ECO-SC-11-31

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    ECO-SC-11-31

    GAS DETECTION SENSOR, DUAL CARTRIDGE, HYDROGEN (H2) 0-100% LEL, OXYGEN (O2) 0-25%, VOLINTEGRAL ALARM STATUS LEDS, 4-20 MA ANALOG OUTPUTS, REMOTE RESET
    $2,803.00 Buy Surplus As Low As $1,682.00
    $1,682.00
    HONEYWELL ECO-SC-11-EX

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    ECO-SC-11-EX

    GAS DETECTION SENSOR, CARTRIDGE, PROPANE+ OXYGEN, VOLINTEGRAL ALARM STATUS LEDS, 4-20 MA ANALOG OUTPUTS, REMOTE RESET
    $2,314.00 Buy Surplus As Low As $1,389.00
    $1,389.00
    HONEYWELL ECO-SC-43

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    ECO-SC-43

    HYDROGEN SULFIDE (H2S) 0-100 PPM
    $2,005.00 Buy Surplus As Low As $1,203.00
    $1,203.00
    Repair Yours $999.00
    HONEYWELL M-511474

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-511474

    AIRSCAN™ INFRARED SENSOR, R134A 0/, 3000, ATMOS, NEMA 1 ENCLOSURE
    $2,923.00 Buy Surplus As Low As $1,754.00
    $1,754.00
    Repair Yours $1,456.00
    HONEYWELL M-600410

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-600410

    AIRSCAN™ INFRARED SENSOR, R507A 0-3, 3000 PPM, ATMOS, NEMA 1 ENCLOSURE
    $2,923.00 Buy Surplus As Low As $1,754.00
    $1,754.00
    Repair Yours $1,456.00
    HONEYWELL M-600428

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-600428

    AIRSCAN™ INFRARED SENSOR, R22 0/3000 PPM, ATMOS, NEMA 1 ENCLOSURE
    $2,923.00 Buy Surplus As Low As $1,754.00
    $1,754.00
    Repair Yours $1,456.00
    HONEYWELL M-600469

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-600469

    AIRSCAN™ INFRARED SENSOR,R404A 0/3000 PPM, ATMOS, NEMA 1 ENCLOSURE
    $2,923.00 Buy Surplus As Low As $1,754.00
    $1,754.00
    Repair Yours $1,456.00
    HONEYWELL M-700262

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700262

    AIRSCAN™ INFRARED SENSOR,HFO1234YF 0/500 PPM, ATMOS, NEMA 1 ENCLOSURE CARB COMPLIANT
    $3,149.00 Buy Surplus As Low As $1,890.00
    $1,890.00
    Repair Yours $1,569.00
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