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    Results 151-200 of 934.
    SIEMENS 538-922

    SIEMENS

    LANDIS & GYR

    538-922

    ETHERNET MICROSERVER MODULE
    ✓ IN STOCK!
    Buy Surplus As Low As $200.93
    $200.93
    Repair Yours $405.83
    SIEMENS 538-955

    SIEMENS

    LANDIS & GYR

    538-955

    TRUNK ISOLATOR/EXTENDER HIGH SPEED 115VAC
    ✓ IN STOCK!
    $576.64 Buy Surplus As Low As $287.53
    $287.53
    Repair Yours $300.00
    SIEMENS 538-965

    SIEMENS

    LANDIS & GYR

    538-965

    DISCONTINUED BY MANUFACTURER, TRUNK ISOLATOR, EXTENDER, MODULE, HIGH SPEED, 120 VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $300.00
    $300.00
    Repair Yours $300.00
    SIEMENS 540-100

    SIEMENS

    LANDIS & GYR

    540-100

    DISCONTINUED BY MANUFACTURER, TERMINAL BOX CONTROLLER, ELECTRONIC OUTPUT, APOGEE AUTOMATION, CLASS 2, OUTPUT: 12 VA MAX EACH OUTPUT, INPUT: 24 VAC 50/60 HZ, 24 V COMMON, 24 V HOT
    ✓ IN STOCK!
    Buy Surplus As Low As $630.00
    $630.00
    Repair Yours $440.00
    SIEMENS 540-100N

    SIEMENS

    LANDIS & GYR

    540-100N

    DISCONTINUED BY MANUFACTURER, VAV TEC CONTROLLER, 16 POINT, 24 VAC, 50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $661.34
    $661.34
    Repair Yours $501.03
    SIEMENS 540-103

    SIEMENS

    LANDIS & GYR

    540-103

    DISCONTINUED BY MANUFACTURER, TERMINAL EQUIPMENT CONTROLLER, 24 VAC INPUT, 50/60 HZ, 12 VA MAX OUTPUT (EACH), CLASS 2
    Buy Surplus As Low As $885.53
    $885.53
    Repair Yours $700.00
    SIEMENS 540-103N

    SIEMENS

    LANDIS & GYR

    540-103N

    VAV TEC CONTROLLER, OPERATING RANGE 19.2 TO 27.6 VAC 50 OR 60 HZ, OUTPUT 6 DO 24 VAC OPTICALLY ISOLATED SOLID STATE SWITCHES @ 0.5 AMP***NON-RETURNABLE NON-CANCELABLE SPECIAL ORDER***
    ✓ IN STOCK!
    $1,578.97 Buy Surplus As Low As $947.38
    $947.38
    Repair Yours $763.00
    SIEMENS 540-104

    SIEMENS

    LANDIS & GYR

    540-104

    DISCONTINUED BY MANUFACTURER, CONSTANT VOLUME CONTROLLER, W/ AUTO ZERO INPUT, 24VAC, 32-122DEG F, 10-95% RELATIVE HUMIDITY
    ✓ IN STOCK!
    Buy Surplus As Low As $1,719.12
    $1,719.12
    Repair Yours $1,450.00
    SIEMENS 540-105

    SIEMENS

    LANDIS & GYR

    540-105

    DISCONTINUED BY MANUFACTURER, HEAT PUMP CONTROLLER, SYSTEM 600, SINGLE STAGE, 24 VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $497.05
    $497.05
    Repair Yours $398.78
    SIEMENS 540-106

    SIEMENS

    LANDIS & GYR

    540-106

    DISCONTINUED BY MANUFACTURER, DUAL DUCT CONTROLLER, SYSTEM 600 SERIES, ELECTRONIC OUTPUT, 24 VAC, 50/60 HZ
    Buy Surplus As Low As $1,041.34
    $1,041.34
    Repair Yours $858.90
    SIEMENS 540-110

    SIEMENS

    LANDIS & GYR

    540-110

    UNIT CONDITIONER / TERMINAL EQUIPMENT CONTROLLER, SYSTEM 600, ELECTRONIC OUTPUT, 24VAC, 50/60HZ, NO DIRECT RPL, INSTALLATION INSTRUCTIONS #540-194, REPLACES 540-110N
    ✓ IN STOCK!
    Buy Surplus As Low As $593.28
    $593.28
    Repair Yours $490.80
    SIEMENS 540-110N

    SIEMENS

    LANDIS & GYR

    540-110N

    DISCONTINUED BY MANUFACTURER, TEC UNIT CONDITIONER CONTROLLER, FAN COIL, 24VAC, 50/60HZ, POWER CONSUMPTION - 3 VA, 6 DIGITAL OUTPUTS, REPLACED BY 540-110
    ✓ IN STOCK!
    Buy Surplus As Low As $1,189.09
    $1,189.09
    Repair Yours $553.00
    SIEMENS 540-120

    SIEMENS

    LANDIS & GYR

    540-120

    TERMINAL EQUIPMENT CONTROLLER RTS
    ✓ IN STOCK!
    Buy Surplus As Low As $127.33
    $127.33
    Repair Yours $300.00
    SIEMENS 540-121

    SIEMENS

    LANDIS & GYR

    540-121

    DISCONTINUED BY MANUFACTURER, TEMPERATURE SENSOR, ROOM TEMPERATURE SENSOR
    ✓ IN STOCK!
    Buy Surplus As Low As $126.92
    $126.92
    SIEMENS 540-122

    SIEMENS

    LANDIS & GYR

    540-122

    DISCONTINUED BY MANUFACTURER, ROOM TEMPERATURE SENSOR, TERMINAL EQUIPMENT CONTROLLER, WITH FAHRENHEIT INDICATION, SETPOINT DIAL, DI SWITCH, REPLACED BY QAA2280.FWSC
    ✓ IN STOCK!
    Buy Surplus As Low As $144.84
    $144.84
    Repair Yours $300.00
    SIEMENS 540-130

    SIEMENS

    LANDIS & GYR

    540-130

    TEMPERATURE CONTROL 4.5VA 24V 50DEGREE C
    $7.42 Buy Surplus As Low As $4.45
    $4.45
    Repair Yours $300.00
    SIEMENS 540-147

    SIEMENS

    LANDIS & GYR

    540-147

    DISCONTINUED BY MANUFACTURER, TERMINAL EQUIPMENT CONTROLLER RELAY MODULE
    Buy Surplus As Low As $172.00
    $172.00
    Repair Yours $300.00
    SIEMENS 540-160

    SIEMENS

    LANDIS & GYR

    540-160

    SIEMENS, LANDIS & GYR, 540-160, 540160, POWERS, SYSTEM 600, VENT CONTROLLER UNIT, 115/230VAC, 60HZ, .25AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $171.32
    $171.32
    Repair Yours $300.00
    SIEMENS 540-165

    SIEMENS

    LANDIS & GYR

    540-165

    PNEUMATIC CONTROL MODULE
    Buy Surplus As Low As $294.00
    $294.00
    Repair Yours $300.00
    SIEMENS 540-166

    SIEMENS

    LANDIS & GYR

    540-166

    DISCONTINUED BY MANUFACTURER, PNEUMATIC OUTPUT MODULE, WITH GAUGE 0-200
    Buy Surplus As Low As $605.45
    $605.45
    Repair Yours $480.00
    SIEMENS 540-167

    SIEMENS

    LANDIS & GYR

    540-167

    DISCONTINUED BY MANUFACTURER, PNEUMATIC OUTPUT MODULE
    ✓ IN STOCK!
    Buy Surplus As Low As $133.12
    $133.12
    Repair Yours $300.00
    SIEMENS 540-205

    SIEMENS

    LANDIS & GYR

    540-205

    DISCONTINUED BY MANUFACTURER, UNIT VENT CONTROLLER, 0-10VDC, NO REPLACEMENT
    Buy Surplus As Low As $564.00
    $564.00
    Repair Yours $469.00
    SIEMENS 540-244

    SIEMENS

    LANDIS & GYR

    540-244

    DISCONTINUED BY MANUFACTURER, TEMPERATURE SENSOR RIGID 18INCH
    Buy Surplus As Low As $83.00
    $83.00
    SIEMENS 540-245

    SIEMENS

    LANDIS & GYR

    540-245

    DISCONTINUED BY MANUFACTURER, AVERAGING TEMPERATURE SENSOR ASSEMBLY, 3 FT, 100K OHM THERMISTOR
    ✓ IN STOCK!
    Buy Surplus As Low As $32.21
    $32.21
    SIEMENS 540-246

    SIEMENS

    LANDIS & GYR

    540-246

    TEMPERATURE CONTROLLER, 0-130DEG F, 6FT FLEX PROBE
    $140.39 Buy Surplus As Low As $84.84
    $84.84
    Repair Yours $300.00
    SIEMENS 540-380

    SIEMENS

    LANDIS & GYR

    540-380

    DISCONTINUED BY MANUFACTURER, AUTOZERO MODULE, TEC TERMINAL, INSTALLATION KIT
    Buy Surplus As Low As $98.98
    $98.98
    SIEMENS 540-400

    SIEMENS

    LANDIS & GYR

    540-400

    DISCONTINUED BY MANUFACTURER, VENT CONTROLLER UNIT
    Buy Surplus As Low As $420.00
    $420.00
    Repair Yours $350.00
    SIEMENS 540-505

    SIEMENS

    LANDIS & GYR

    540-505

    DISCONTINUED BY MANUFACTURER, HEAT PUMP CONTROLLER, APOGEE, MULTI-STAGE
    Buy Surplus As Low As $630.42
    $630.42
    Repair Yours $498.00
    SIEMENS 540-506

    SIEMENS

    LANDIS & GYR

    540-506

    DISCONTINUED BY MANUFACTURER, DUAL DUCT CONTROLLER, APOGEE AUTOMATION, 2 AIR VELOCITY SENSOR, 12 VA MAX, 24 VAC, ELEC OUT
    Buy Surplus As Low As $757.34
    $757.34
    Repair Yours $611.46
    SIEMENS 540-506N

    SIEMENS

    LANDIS & GYR

    540-506N

    DISCONTINUED BY MANUFACTURER, TEC, DUAL DUCT, CONTROLLER, NO REPLACEMENT
    ✓ IN STOCK!
    Buy Surplus As Low As $678.28
    $678.28
    Repair Yours $525.00
    SIEMENS 540-509

    SIEMENS

    LANDIS & GYR

    540-509

    DISCONTINUED BY MANUFACTURER, UNIT VENT CONTROLLER SYSTEM, 24 VAC, 50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $785.42
    $785.42
    Repair Yours $601.75
    SIEMENS 540-511A

    SIEMENS

    LANDIS & GYR

    540-511A

    HVAC CONTROL SYSTEM, CLASS 2, 24VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $790.81
    $790.81
    Repair Yours $555.29
    SIEMENS 540-516

    SIEMENS

    LANDIS & GYR

    540-516

    DISCONTINUED BY MANUFACTURER, ROOM PRESSURIZATION CONTROLLER, APOGEE, REPLACED BY 540-517
    Buy Surplus As Low As $1,200.00
    $1,200.00
    Repair Yours $996.00
    SIEMENS 540-650B

    SIEMENS

    LANDIS & GYR

    540-650B

    ROOM TEMPERATURE SENSOR, SERIES 2000, INTERACTIVE, WHITE LCD DISPLAY, TEC, DIGITAL SET POINT ADJUSTMENT
    ✓ IN STOCK!
    $599.14 Buy Surplus As Low As $325.28
    $325.28
    SIEMENS 540-662B

    SIEMENS

    LANDIS & GYR

    540-662B

    DISCONTINUED BY MANUFACTURER 01/06/2023, ROOM TEMPERATURE SENSOR, ELECTRONIC, W/OVRD, WHITE
    Buy Surplus As Low As $189.33
    $189.33
    Repair Yours $300.00
    SIEMENS 540-664B

    SIEMENS

    LANDIS & GYR

    540-664B

    ELECTRONIC ROOM SENSOR, WHITE, THERMISTOR, SETPOINT ADJUSTMENT
    Buy Surplus As Low As $158.13
    $158.13
    Repair Yours $300.00
    SIEMENS 540-672CA

    SIEMENS

    LANDIS & GYR

    540-672CA

    ROOM TEMPERATURE SENSOR W/STPT
    $165.00 Buy Surplus As Low As $99.00
    $99.00
    Repair Yours $300.00
    SIEMENS 540-672CB

    SIEMENS

    LANDIS & GYR

    540-672CB

    ROOM TEMPERATURE SENSOR 10KOHM THERMISTOR 55-95F
    ✓ IN STOCK!
    $190.89 Buy Surplus As Low As $176.00
    $176.00
    Repair Yours Contact Us
    SIEMENS 540-672FA

    SIEMENS

    LANDIS & GYR

    540-672FA

    DISCONTINUED BY MANUFACTURER, ROOM TEMPERATURE SENSOR 10KOHM THERMISTOR 55-95F
    Buy Surplus As Low As $132.00
    $132.00
    Repair Yours $300.00
    SIEMENS 540-676FB

    SIEMENS

    LANDIS & GYR

    540-676FB

    SIEMENS, SENSOR, ROOM TEMPERATURE,3-11/32IN HIGH, 2-1/2IN WIDE, 1-1/2IN DEEP, 55-95F, 13-35C, W/SETPOINT, DIGITAL TEMP. DISPLAY, WHITE,
    Buy Surplus As Low As $208.06
    $208.06
    Repair Yours $300.00
    SIEMENS 540-800

    SIEMENS

    LANDIS & GYR

    540-800

    DISCONTINUED BY MANUFACTURER, TERMINAL BOX CONTROLLER, FLUSH MOUNT ROOM SENSOR, 10K OHM
    Buy Surplus As Low As $490.66
    $490.66
    Repair Yours $448.02
    SIEMENS 540-830

    SIEMENS

    LANDIS & GYR

    540-830

    DISCONTINUED BY MANUFACTURER, VENTILATION CONTROLLER, W/HUMIDITY, 1-10V UNIT
    Buy Surplus As Low As $666.60
    $666.60
    Repair Yours $548.00
    SIEMENS 540-844

    SIEMENS

    LANDIS & GYR

    540-844

    DISCONTINUED BY MANUFACTURER, HEAT PUMP CONTROLLER, HUMIDITY VAV, W/CO2 MONITORING, NO REPLACEMENT
    ✓ IN STOCK!
    Buy Surplus As Low As $276.05
    $276.05
    Repair Yours $300.00
    SIEMENS 540-847

    SIEMENS

    LANDIS & GYR

    540-847

    HEAT PUMP HUMIDITY CONTROLLER
    Buy Surplus As Low As $234.07
    $234.07
    Repair Yours $300.00
    SIEMENS 540-863

    SIEMENS

    LANDIS & GYR

    540-863

    DISCONTINUED BY MANUFACTURER, AIR HANDLING UNIT CONTROLLER, 28 TERMINAL
    ✓ IN STOCK!
    Buy Surplus As Low As $662.67
    $662.67
    Repair Yours $552.15
    SIEMENS 540-863B

    SIEMENS

    LANDIS & GYR

    540-863B

    DISCONTINUED BY MANUFACTURER, AIR HANDLING UNIT CONTROLLER, UNIT VENT CONTROLLER, 28 TERMINAL, MIXED AIR CONTROL
    Buy Surplus As Low As $600.00
    $600.00
    SIEMENS 540-863C

    SIEMENS

    LANDIS & GYR

    540-863C

    DISCONTINUED BY MANUFACTURER, AIR HANDLING UNIT CONTROLLER, UNIT VENT CONTROLLER, 28 TERMINAL, MIXED AIR CONTROL
    ✓ IN STOCK!
    Buy Surplus As Low As $474.28
    $474.28
    Repair Yours $441.10
    SIEMENS 540-865A

    SIEMENS

    LANDIS & GYR

    540-865A

    DISCONTINUED BY MANUFACTURER, TERMINAL EQUIPMENT CONTROLLER
    ✓ IN STOCK!
    Buy Surplus As Low As $450.00
    $450.00
    Repair Yours $374.00
    SIEMENS 540-865D

    SIEMENS

    LANDIS & GYR

    540-865D

    DISCONTINUED BY MANUFACTURER, TEC VAV CONTROLLER, 24 VAC, TERMINAL BOX
    ✓ IN STOCK!
    Buy Surplus As Low As $420.00
    $420.00
    Repair Yours $349.00
    SIEMENS 540-865DN

    SIEMENS

    LANDIS & GYR

    540-865DN

    DISCONTINUED BY MANUFACTURER, TEC TERMINAL BOX CONTROLLER, WITH SERIES FAN, 3-STAGE ELECTRIC HEAT CONTROLLER
    ✓ IN STOCK!
    Buy Surplus As Low As $600.00
    $600.00
    Repair Yours $498.00
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