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    Results 151-200 of 928.
    SIEMENS 538-955

    SIEMENS

    LANDIS & GYR

    538-955

    TRUNK ISOLATOR/EXTENDER HIGH SPEED 115VAC
    ✓ IN STOCK!
    $720.80 Buy Surplus As Low As $547.81
    $547.81
    Repair Yours $424.00
    SIEMENS 538-965

    SIEMENS

    LANDIS & GYR

    538-965

    TRUNK ISOLATOR/EXTENDER HIGH SPEED 120VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $900.00
    $900.00
    Repair Yours $760.00
    SIEMENS 538-990

    SIEMENS

    LANDIS & GYR

    538-990

    DIGITAL ENERGY MONITOR 800 AMP SERIES 2000
    Buy Surplus As Low As $2,400.00
    $2,400.00
    Repair Yours $2,000.00
    SIEMENS 538-991

    SIEMENS

    LANDIS & GYR

    538-991

    DIGITAL ENERGY MONITOR SERIES 2000-400A MEDIUM
    $2,809.00 Buy Surplus As Low As $1,686.00
    $1,686.00
    Repair Yours $1,431.00
    SIEMENS 540-012

    SIEMENS

    LANDIS & GYR

    540-012

    MPU ENCLOSURE METAL W/BACKPLANE
    Buy Surplus As Low As $608.00
    $608.00
    Repair Yours $506.00
    SIEMENS 540-0200

    SIEMENS

    LANDIS & GYR

    540-0200

    CONTROLLER UNIT
    Buy Surplus As Low As $432.00
    $432.00
    Repair Yours $360.00
    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 $570.00
    $570.00
    Repair Yours $439.68
    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 $728.00
    $728.00
    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 $849.00
    $849.00
    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!
    $1,561.00 Buy Surplus As Low As $938.00
    $938.00
    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 $1,758.00 $870.00
    $1,758.00 $870.00
    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 $534.00
    $534.00
    Repair Yours $398.78
    SIEMENS 540-105N

    SIEMENS

    LANDIS & GYR

    540-105N

    DISCONTINUED BY MANUFACTURER, HEAT PUMP CONTROLLER, SYSTEM 600, SINGLE STAGE, 24 VAC, 50/60 HZ
    Buy Surplus As Low As $606.00
    $606.00
    Repair Yours $498.00
    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 $1,001.00
    $1,001.00
    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 $576.00
    $576.00
    Repair Yours $490.80
    SIEMENS 540-120

    SIEMENS

    LANDIS & GYR

    540-120

    TERMINAL EQUIPMENT CONTROLLER RTS
    ✓ IN STOCK!
    Buy Surplus As Low As $136.00
    $136.00
    Repair Yours $200.00
    SIEMENS 540-121

    SIEMENS

    LANDIS & GYR

    540-121

    DISCONTINUED BY MANUFACTURER, TEMPERATURE SENSOR, ROOM TEMPERATURE SENSOR
    ✓ IN STOCK!
    Buy Surplus As Low As $122.00 $40.50
    $122.00 $40.50
    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 $182.00
    $182.00
    Repair Yours $200.00
    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 $200.00
    SIEMENS 540-136

    SIEMENS

    LANDIS & GYR

    540-136

    CABLE 50FT
    Buy Surplus As Low As $39.00
    $39.00
    Repair Yours Contact Us
    SIEMENS 540-141

    SIEMENS

    LANDIS & GYR

    540-141

    TERMINAL EQUIPMENT CONTROLLER CONNECTION KIT
    $112.00 Buy Surplus As Low As $67.00
    $67.00
    Repair Yours Contact Us
    SIEMENS 540-142

    SIEMENS

    LANDIS & GYR

    540-142

    ADAPTER PLUG SINGLE TO TWIN RS11
    $51.00 Buy Surplus As Low As $31.00
    $31.00
    SIEMENS 540-147

    SIEMENS

    LANDIS & GYR

    540-147

    TERMINAL EQUIPMENT CONTROLLER RELAY MODULE
    $287.00 Buy Surplus As Low As $172.00
    $172.00
    Repair Yours $200.00
    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 $326.40
    $326.40
    Repair Yours $320.00
    SIEMENS 540-162A

    SIEMENS

    LANDIS & GYR

    540-162A

    TERMINAL BOX CONTROLLER A-OP
    $435.00 Buy Surplus As Low As $261.00
    $261.00
    Repair Yours $223.00
    SIEMENS 540-165

    SIEMENS

    LANDIS & GYR

    540-165

    PNEUMATIC CONTROL MODULE
    Buy Surplus As Low As $294.00
    $294.00
    Repair Yours $250.00
    SIEMENS 540-166

    SIEMENS

    LANDIS & GYR

    540-166

    DISCONTINUED BY MANUFACTURER, PNEUMATIC OUTPUT MODULE, WITH GAUGE 0-200
    Buy Surplus As Low As $582.00
    $582.00
    Repair Yours $480.00
    SIEMENS 540-167

    SIEMENS

    LANDIS & GYR

    540-167

    DISCONTINUED BY MANUFACTURER, PNEUMATIC OUTPUT MODULE
    Buy Surplus As Low As $425.00
    $425.00
    Repair Yours $350.00
    SIEMENS 540-190

    SIEMENS

    LANDIS & GYR

    540-190

    DISCONTINUED BY MANUFACTURER, INSTALLATION INSTRUCTIONS FOR 540-100 SYSTEM600, NO REPLACEMENT
    ✓ IN STOCK!
    Buy Surplus As Low As $970.00
    $970.00
    Repair Yours $797.00
    SIEMENS 540-205

    SIEMENS

    LANDIS & GYR

    540-205

    DISCONTINUED BY MANUFACTURER, UNIT VENT CONTROLLER, 0-10VDC
    Buy Surplus As Low As $930.00
    $930.00
    Repair Yours $780.00
    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 $61.37
    $61.37
    SIEMENS 540-380

    SIEMENS

    LANDIS & GYR

    540-380

    AUTOZERO MODULE, TEC TERMINAL, INSTALLATION KIT
    ✓ IN STOCK!
    $161.00 Buy Surplus As Low As $123.00
    $123.00
    SIEMENS 540-433

    SIEMENS

    LANDIS & GYR

    540-433

    DISCONTINUED BY MANUFACTURER, TEC VAV CONTROLLER
    Buy Surplus As Low As $324.00
    $324.00
    Repair Yours $270.00
    SIEMENS 540-452G

    SIEMENS

    LANDIS & GYR

    540-452G

    ROOM TEMPERATURE SENSOR
    Buy Surplus As Low As $120.00
    $120.00
    Repair Yours $200.00
    SIEMENS 540-453

    SIEMENS

    LANDIS & GYR

    540-453

    ROOM TEMPERATURE SENSOR
    Buy Surplus As Low As $120.00
    $120.00
    Repair Yours $200.00
    SIEMENS 540-454G

    SIEMENS

    LANDIS & GYR

    540-454G

    ROOM TEMPERATURE SENSOR
    Buy Surplus As Low As $120.00
    $120.00
    Repair Yours $200.00
    SIEMENS 540-478

    SIEMENS

    LANDIS & GYR

    540-478

    TERMINAL BLOCK REPLACEMENT KIT HDWPT
    $85.00 Buy Surplus As Low As $51.00
    $51.00
    SIEMENS 540-480

    SIEMENS

    LANDIS & GYR

    540-480

    TERMINAL BLOCK REPLACEMENT KIT
    $75.00 Buy Surplus As Low As $45.00
    $45.00
    SIEMENS 540-503

    SIEMENS

    LANDIS & GYR

    540-503

    DISCONTINUED BY MANUFACTURER, HEAT PUMP CONTROLLER APOGEE
    Buy Surplus As Low As $1,050.00
    $1,050.00
    Repair Yours $880.00
    SIEMENS 540-505

    SIEMENS

    LANDIS & GYR

    540-505

    DISCONTINUED BY MANUFACTURER, HEAT PUMP CONTROLLER, APOGEE, MULTI-STAGE
    Buy Surplus As Low As $606.00
    $606.00
    Repair Yours $498.00
    SIEMENS 540-508

    SIEMENS

    LANDIS & GYR

    540-508

    TEC HEAT PUMP UNIT VENT CONTROLLER
    $923.00 Buy Surplus As Low As $462.00
    $462.00
    Repair Yours $439.00
    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 $733.00
    $733.00
    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 $1,075.00
    $1,075.00
    Repair Yours $700.00
    SIEMENS 540-514

    SIEMENS

    LANDIS & GYR

    540-514

    DISCONTINUED BY MANUFACTURER, TERMINAL BOX, CONTROLLER, 24VAC, 50/60 HZ
    Buy Surplus As Low As $849.00
    $849.00
    Repair Yours $698.00
    SIEMENS 540-518

    SIEMENS

    LANDIS & GYR

    540-518

    DISCONTINUED BY MANUFACTURER, DUAL DUCT CONTROLLER, SYSTEM 600, 24 VAC INPUT, 50/60 HZ, 12 VA MAX OUTPUT, 8 DIGITAL OUTPUTS / 2 DIGITAL INPUTS
    Buy Surplus As Low As $660.00
    $660.00
    Repair Yours $500.00
    SIEMENS 540-650B

    SIEMENS

    LANDIS & GYR

    540-650B

    ROOM TEMPERATURE SENSOR, SERIES 2000, INTERACTIVE, WHITE LCD DISPLAY, TEC, DIGITAL SET POINT ADJUSTMENT
    ✓ IN STOCK!
    $624.60 Buy Surplus As Low As $474.70
    $474.70
    SIEMENS 540-662A

    SIEMENS

    LANDIS & GYR

    540-662A

    ROOM TEMPERATURE SENSOR BEIGE
    Buy Surplus As Low As $120.00
    $120.00
    Repair Yours $200.00
    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 $182.00
    $182.00
    Repair Yours $200.00
    SIEMENS 540-664A

    SIEMENS

    LANDIS & GYR

    540-664A

    ROOM TEMPERATURE SENSOR W/STPT BEIGE
    Buy Surplus As Low As $144.00
    $144.00
    Repair Yours $200.00
    SIEMENS 540-664B

    SIEMENS

    LANDIS & GYR

    540-664B

    ELECTRONIC ROOM SENSOR, WHITE, THERMISTOR, SETPOINT ADJUSTMENT
    Buy Surplus As Low As $152.00
    $152.00
    Repair Yours $200.00
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