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    Sensors & Switches / Sensor Controller

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    Results 1-50 of 401.
    HONEYWELL R8285B1053

    HONEYWELL

    RESIDEO

    R8285B1053

    PROVIDES LOW VOLTAGE CONTROL OF LINE VOLTAGE FAN MOTORS AND AUXILIARY CIRCUITS IN HEATING, COOLING, OR AIR CONDITIONING SYSTEMS. **FEATURES** * TRANSFORMER POWERS LOW VOLTAGE CONT ...
    ✓ IN STOCK!
    $153.65 Buy Surplus As Low As $116.77
    $116.77
    Repair Yours $300.00
    HONEYWELL L4064-B-2210

    HONEYWELL

    RESIDEO

    L4064-B-2210

    FAN/LIMIT CONTROL, -40/190F, 11 1/2" ELEMENT INSERTION, SURFACE OR UNIVERSAL MOUNTING BRACKET AVAILABLE, USED WITH FORCED WARM AIR HEATING SYSTEMS, 25 DEGREE HIGH LIMIT DIFFERENTIAL, FAN SWI ...
    ✓ IN STOCK!
    $242.00 Buy Surplus As Low As $130.15
    $130.15
    Repair Yours $200.00
    HONEYWELL Q345A-1305

    HONEYWELL

    RESIDEO

    Q345A-1305

    PILOT BURNER, 1/4IN COMPRESSION CONNECTION, FRONT FACING TIP
    ✓ IN STOCK!
    $64.81 Buy Surplus As Low As $38.89
    $38.89
    HONEYWELL L4079B1066

    HONEYWELL

    L4079B1066

    LIMIT CONTROLLER, 20-300 PSI OPERATING PRESSURE RANGE, MANUAL RESET, SPST SWITCH BREAKS ON PRESSURE RISE, STAINLESS STEEL DIAPHRAGM, USE WITH STEAM; AIR; NONCOMBUSTIBLE GASES; & NON CORROSIV ...
    ✓ IN STOCK!
    $479.59 Buy Surplus As Low As $287.75
    $287.75
    Repair Yours $300.00
    HONEYWELL 14000786-001

    HONEYWELL

    14000786-001

    PNEUMATIC RECEIVER GUAGE, 25-125DEGREES FARENHEIT, 1.5INCH DIAMETER
    ✓ IN STOCK!
    $233.53 Buy Surplus As Low As $140.12
    $140.12
    HONEYWELL CP980E1060

    HONEYWELL

    CP980E1060

    VELOCITROL SENSOR CONTROL
    ✓ IN STOCK!
    $1,676.12 Buy Surplus As Low As $1,005.67
    $1,005.67
    Repair Yours $514.77
    HONEYWELL LP914A-1268

    HONEYWELL

    LP914A-1268

    TEMPERATURE RANGE, 40-240F 3/8 X 15 ELEMENT D
    ✓ IN STOCK!
    $571.99 Buy Surplus As Low As $343.19
    $343.19
    Repair Yours $300.00
    HONEYWELL C7041R-2000

    HONEYWELL

    C7041R-2000

    20K DUCT AVRGING TEMP SENSOR,12FT , C7041R2000
    ✓ IN STOCK!
    $137.40 Buy Surplus As Low As $104.42
    $104.42
    Repair Yours $300.00
    HONEYWELL C7061A1020

    HONEYWELL

    C7061A1020

    ULTRAVIOLET FLAME DETECTOR, DYNAMIC SELF CHECKING PURPLE PEEPER, 115/230VAC, 3/4 INCH MOUNTING, NEMA 4 RATED, -40/175 DEGREE AMBIENT TEMP RATING, FOR USE ON COMBUSTION GAS, OIL AND OTHER FUE ...
    ✓ IN STOCK!
    $2,792.99 Buy Surplus As Low As $1,675.79
    $1,675.79
    Repair Yours $1,364.00
    HONEYWELL C7061A1053

    HONEYWELL

    C7061A1053

    ULTRAVIOLET FLAME DETECTOR, DYNAMIC SELF CHECKING PURPLE PEEPER, 120VAC, 3/4 INCH MOUNTING, 96 INCH COLOR CODED LEAD WIRES, NEMA 4 RATED, -40/175 DEGREE AMBIENT TEMP RATING, REPLACES C7061A1 ...
    ✓ IN STOCK!
    $3,033.42 Buy Surplus As Low As $1,820.05
    $1,820.05
    Repair Yours $1,449.00
    HONEYWELL C7061F2001

    HONEYWELL

    C7061F2001

    ULTRAVIOLET FLAME DETECTOR, DYNAMIC SELF CHECKING PURPLE PEEPER, 120VAC, 3/4 INCH MOUNTING, 96 INCH COLOR CODED LEAD WIRES, NEMA 4 RATED, -40/175 DEGREE AMBIENT TEMP RATING, FOR USE ON COMBU ...
    ✓ IN STOCK!
    $4,998.39 Buy Surplus As Low As $2,999.03
    $2,999.03
    Repair Yours $1,950.00
    HONEYWELL CP980C1065

    HONEYWELL

    CP980C1065

    VELOCITROL DA 0-500 FPM
    ✓ IN STOCK!
    $1,220.99 Buy Surplus As Low As $927.95
    $927.95
    Repair Yours $372.50
    HONEYWELL Y7751F2001

    HONEYWELL

    Y7751F2001

    KIT, ACTUALTOR INCLUDED, W7751F/ML6161B
    ✓ IN STOCK!
    $1,756.80 Buy Surplus As Low As $1,054.08
    $1,054.08
    Repair Yours $973.00
    HONEYWELL HH57AC078A

    HONEYWELL

    HH57AC078A

    ENTHALPY SENSOR SOLID STATE, AVAILABLE, SURPLUS, NEVER USED, 2 YEAR RADWELL WARRANTY
    ✓ IN STOCK!
    $166.60 Buy Surplus As Low As $23.96
    $23.96
    Repair Yours $300.00
    HONEYWELL C7150B-1004

    HONEYWELL

    C7150B-1004

    TEMPERATURE MIX AIR SENSOR, 300 OHMS, 1/4 INCH MOUNTING
    ✓ IN STOCK!
    $55.00 Buy Surplus As Low As $42.00
    $42.00
    Repair Yours $300.00
    HONEYWELL C7061A-1046

    HONEYWELL

    C7061A-1046

    ULTRAVIOLET FLAME DETECTOR, DYNAMIC SELF CHECKING PURPLE PEEPER, 120 VAC, 3/4 INCH MOUNTING, NEMA 4 RATED, -40/175 DEGREE AMBIENT TEMP RATING, FOR USE ON COMBUSTION GAS, OIL AND OTHER FUELS, ...
    ✓ IN STOCK!
    $2,947.00 Buy Surplus As Low As $1,768.20
    $1,768.20
    Repair Yours $1,469.00
    HONEYWELL Q314A3547

    HONEYWELL

    RESIDEO

    Q314A3547

    STANDING PILOT BURNER FOR NATURAL GAS WITH LEFT SINGLE-TIP STYLE, PILOT BURNER L TIP
    ✓ IN STOCK!
    $81.41 Buy Surplus As Low As $48.85
    $48.85
    Repair Yours $300.00
    HONEYWELL 43196000-038

    HONEYWELL

    43196000-038

    HIGHT TEMPERATURE KIT, FOR ACT WITH 1 1/2 IN
    ✓ IN STOCK!
    $549.99 Buy Surplus As Low As $329.99
    $329.99
    Repair Yours $300.00
    HONEYWELL L4006H1004

    HONEYWELL

    RESIDEO

    L4006H1004

    AQUASTAT, BREAKS ON RISE, 100-240F RANGE, 240F FACTORY STOP, MANUAL RESET LESS WELL
    ✓ IN STOCK!
    $338.24 Buy Surplus As Low As $202.94
    $202.94
    Repair Yours $300.00
    HONEYWELL R8285D5001

    HONEYWELL

    RESIDEO

    R8285D5001

    DPST CONTROL CENTER FOR HYDRONIC APPLICATIONS USE WITH SV9600 SMART VALVE INCLUD
    ✓ IN STOCK!
    $120.22 Buy Surplus As Low As $72.13
    $72.13
    Repair Yours $300.00
    HONEYWELL HE100A1000

    HONEYWELL

    RESIDEO

    HE100A1000

    SMALL BASIC BYPASS HUMIDIFIER, TRUEEASE BASIC BYPASS HUMIDIFIER. SMALL MODEL (12GPD). INCLUDES HUMIDIPRO DIGITAL HUMIDITY CONTROL.
    ✓ IN STOCK!
    $321.78 Buy Surplus As Low As $193.07
    $193.07
    Repair Yours $300.00
    HONEYWELL 50053952-020

    HONEYWELL

    RESIDEO

    50053952-020

    TRUEFRESH VENTILATION TIMER 20-40-60 MIN, TRUEFRESH VENTILATION TIMER. 20/40/60 MINUTES. WORKS WITH VNT5150 VNT5200 AND VNT5070.
    ✓ IN STOCK!
    $112.77 Buy Surplus As Low As $85.70
    $85.70
    Repair Yours $300.00
    HONEYWELL Y7355H1009

    HONEYWELL

    Y7355H1009

    COMMERCIAL THERMOSTAT/SENSOR PACKAGE, T7350H1009-COMMUNICATING THERMOSTAT FOR SINGLE USE-MULTISTAGE CONVENTIONAL OR HEAT PUMP APPLICATIONS (3H/3C), C7041B2005- DUCT MOUNT SENSOR, T7771A1005- ...
    ✓ IN STOCK!
    $1,953.59 Buy Surplus As Low As $1,484.73
    $1,484.73
    Repair Yours $542.56
    HONEYWELL T6031A-1227

    HONEYWELL

    T6031A-1227

    TEMPERATURE CONTROL, REFRIGERATION, 5' CAPILLARY, 24 VAC TO 30 VAC, 24V, GRAY
    ✓ IN STOCK!
    $319.00 Buy Surplus As Low As $129.38
    $129.38
    Repair Yours $300.00
    HONEYWELL TR71

    HONEYWELL

    TR71

    DISCONTINUED BY MANUFACTUREER,TEMPERATURE MODULE, TWO WIRE, ZIO, LCD, WALL MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As $200.58
    $200.58
    Repair Yours $300.00
    HONEYWELL TR42-CO2

    HONEYWELL

    TR42-CO2

    DISCONTINUED BY MANUFACTURER, LCD TEMPERATURE, CO2 SYLK, WALL MODULE
    ✓ IN STOCK!
    Buy Surplus As Low As $304.28
    $304.28
    Repair Yours $300.00
    HONEYWELL TR42-H

    HONEYWELL

    TR42-H

    DISCONTINUED BY MANUFACTURER, WALL MODULE, TEMPERATURE AND HUMIDITY, TWO-WIRE SYLK
    ✓ IN STOCK!
    $409.00 Buy New $409.00
    $441.41
    Repair Yours $399.00
    HONEYWELL HR90

    HONEYWELL

    RESIDEO

    HR90

    THERAPRO ELECTRONIC RADIATOR CONTROLLER, PROGRAMMABLE RADIATOR CONTROLLER STANDALONE FOR TRADE
    ✓ IN STOCK!
    $135.16 Buy Surplus As Low As $81.10
    $81.10
    Repair Yours $300.00
    HONEYWELL FE-MF3

    HONEYWELL

    MICROSWITCH

    FE-MF3

    CIRCUIT BOARD ASSEMBLY, PHOTOELECTRIC CONTROLLER
    ✓ IN STOCK!
    $12.84 Buy Surplus As Low As $5.25
    $5.25
    HONEYWELL FMP1

    HONEYWELL

    MICROSWITCH

    FMP1

    DISCONTINUED BY MANUFACTURER, STD P/S BOARD
    ✓ IN STOCK!
    Buy Surplus As Low As $44.00
    $44.00
    HONEYWELL FMP2

    HONEYWELL

    MICROSWITCH

    FMP2

    POWER SUPPLY BOARD, FOR FM SERIES
    ✓ IN STOCK!
    $87.00 Buy Surplus As Low As $44.00
    $44.00
    Repair Yours $300.00
    HONEYWELL FFSRT012R2

    HONEYWELL

    MICROSWITCH

    FFSRT012R2

    SAFETY ELECTRONIC
    ✓ IN STOCK!
    $496.00 Buy Surplus As Low As $248.00
    $248.00
    Repair Yours $300.00
    HONEYWELL FMT-2

    HONEYWELL

    MICROSWITCH

    FMT-2

    PC BOARD
    ✓ IN STOCK!
    $37.52 Buy Surplus As Low As $31.26
    $31.26
    HONEYWELL FE-MLS10S-G30B

    HONEYWELL

    MICROSWITCH

    FE-MLS10S-G30B

    DISCONTINUED BY MANUFACTURER, PHOTOELECTRIC CONTROLLER, MODULATED, 22-26 VDC, 2.9 W
    ✓ IN STOCK!
    Buy Surplus As Low As $190.00
    $190.00
    HONEYWELL FE-TRB

    HONEYWELL

    MICROSWITCH

    FE-TRB

    DISCONTINUED BY MANUFACTURER, MODULAR CONTROL BASE, TRANSFORMER, STANDARD 2 OCTAL SOCKETS, PLUG-IN DPDT RELAY, 115 VAC, 50/60 HZ, 15 VA
    ✓ IN STOCK!
    Buy Surplus As Low As $80.73
    $80.73
    HONEYWELL 129464M

    HONEYWELL

    129464M

    UV POWER SENSING TUBE, 0-250 DEG F, FOR C7035
    ✓ IN STOCK!
    $766.79 Buy Surplus As Low As $506.08
    $506.08
    Repair Yours $411.00
    HONEYWELL HE205A1000

    HONEYWELL

    RESIDEO

    HE205A1000

    WHOLE-HOME BYPASS HUMIDIFIER 17GPD, LARGE 17GPD WHOLE HOME BYPASS HUMIDIFIER WITH H890
    ✓ IN STOCK!
    $304.00 Buy Surplus As Low As $197.00
    $197.00
    Repair Yours $300.00
    HONEYWELL FE-TR8B

    HONEYWELL

    MICROSWITCH

    FE-TR8B

    DISCONTINUED BY MANUFACTURER, LOGIC MODULE, 15 VAC / 12 VDC, 50/60 HZ, FOR PHOTOELECTRIC SENSOR, LIGHT/DARK OPERATE, TIME DELAY
    ✓ IN STOCK!
    Buy Surplus As Low As $95.49
    $95.49
    HONEYWELL 272695

    HONEYWELL

    272695

    FRESH AIR CONTROLLER, RANGE HIGH OR LOW, TURNSTYLE ADJUST SWITCH, LED INDICATOR
    ✓ IN STOCK!
    $43.92 Buy Surplus As Low As $18.26
    $18.26
    Repair Yours $300.00
    HONEYWELL T834N1010

    HONEYWELL

    RESIDEO

    T834N1010

    THERMOSTAT, 1HT/1CL, 24V, VERTICAL, NON-PROGRAMMABLE
    ✓ IN STOCK!
    $70.93 Buy Surplus As Low As $42.56
    $42.56
    Repair Yours $300.00
    HONEYWELL FE-TR8-T82

    HONEYWELL

    MICROSWITCH

    FE-TR8-T82

    DISCONTINUED BY MANUFACTURER, LOGIC MODULE, 15 VAC / 12 VDC, 50/60 HZ, FOR PHOTOELECTRIC SENSOR, LIGHT/DARK OPERATE, TIME DELAY
    ✓ IN STOCK!
    Buy Surplus As Low As $228.43
    $228.43
    HONEYWELL C7061A-1012

    HONEYWELL

    C7061A-1012

    DISCONTINUED BY MANUFACTURER, ULTRAVIOLET FLAME DETECTOR, DYNAMIC SELF CHECKING PURPLE PEEPER, 120 VAC, 3/4 INCH MOUNTING, NEMA 4 RATED, USED WITH R7861 DYNAMIC SELF CHECK AMPLIFIERS, DIRECT ...
    ✓ IN STOCK!
    Buy Surplus As Low As $2,301.14
    $2,301.14
    HONEYWELL HP970A-1009

    HONEYWELL

    HP970A-1009

    HUMIDISTAT PNEU. 2-PIPE DA W/O FTNGS OR CVR 15-75% REL. HUM.
    ✓ IN STOCK!
    $1,125.18 Buy Surplus As Low As $675.11
    $675.11
    Repair Yours $317.31
    HONEYWELL R8184G4066

    HONEYWELL

    RESIDEO

    R8184G4066

    NOTE:** C554A CADMIUM SULFIDE FLAME DETECTOR AND 24 VAC THERMOSTAT REQUIRED. PROVIDES AUTOMATIC, NON\-RECYCLING CONTROL OF AN INTERMITTENT IGNITION OIL BURNER SYSTEM. **FEATURES** ...
    ✓ IN STOCK!
    $305.24 Buy Surplus As Low As $183.14
    $183.14
    Repair Yours $300.00
    HONEYWELL R841C-1227

    HONEYWELL

    RESIDEO

    R841C-1227

    24 V SPST SWITCHING ELECTRIC HEATER RELAY, RELAY W/CONDUIT BUSHING 240V HS:8536.49.0065
    ✓ IN STOCK!
    $161.58 Buy Surplus As Low As $96.95
    $96.95
    Repair Yours $300.00
    HONEYWELL LP920A-1021

    HONEYWELL

    LP920A-1021

    REMOTE BULB TEMPERATURE CONTROLLER, TWO-PIPE, DIRECT ACTING, 30-150 DEG F
    ✓ IN STOCK!
    $1,436.00 Buy Surplus As Low As $751.14
    $751.14
    HONEYWELL L4064-B-2236

    HONEYWELL

    RESIDEO

    L4064-B-2236

    FAN AND LIMIT CONTROLLER, -40 TO 190 DEGREE OPERATING TEMPERATURE,8" ELEMENT INSERTION, 50 F MAXIMUM AMBIENT AT ELEMENT
    ✓ IN STOCK!
    $219.00 Buy Surplus As Low As $119.70
    $119.70
    Repair Yours $300.00
    HONEYWELL FPC

    HONEYWELL

    RESIDEO

    FPC

    HONEYWELL FPC FREEZE PROTECTION CONTROL , FPC
    ✓ IN STOCK!
    $105.00 Buy Surplus As Low As $63.00
    $63.00
    Repair Yours $300.00
    HONEYWELL H7012B-1007

    HONEYWELL

    H7012B-1007

    TEMPERATURE SENSOR 1000OHM STANDARD PLUS PT1000
    ✓ IN STOCK!
    Buy Surplus As Low As $284.96
    $284.96
    Repair Yours $300.00
    HONEYWELL L4079B1058

    HONEYWELL

    L4079B1058

    CONTROLLER, MANUAL RESET, 5 PSI TO 50 PSI, 35 TO 350 KPA, 1/4IN NPT FEMALE FITTING MOUNT
    ✓ IN STOCK!
    $374.54 Buy Surplus As Low As $224.72
    $224.72
    Repair Yours $300.00
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