Product Search

    SEARCH NOW FOR ALL YOUR LANDEN SOLUTIONS

    Radwell is here to supply you with all your plant floor needs.

    Radwell is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder.

    Filter Results
    Results 751-800 of 984.
    SIEMENS 544-110

    SIEMENS

    LANDIS & GYR

    544-110

    DISCONTINUED BY MANUFACTURER, PROCESSOR CARD, FOR UNITARY CONTROLLER
    ✓ IN STOCK!
    Buy Surplus As Low As $527.74
    $527.74
    Repair Yours $460.04
    SIEMENS 544-040

    SIEMENS

    LANDIS & GYR

    544-040

    PC MODULE POWER DISTRIBUTION
    Buy Surplus As Low As $630.00
    $630.00
    Repair Yours $540.00
    SIEMENS 541-351

    SIEMENS

    LANDIS & GYR

    541-351

    CONTROLLER BOARD
    ✓ IN STOCK!
    Buy Surplus As Low As $382.95
    $382.95
    Repair Yours $300.00
    SIEMENS 541-305

    SIEMENS

    LANDIS & GYR

    541-305

    TEMPERATURE SENSOR REPAIR KIT
    $37.00 Buy Surplus As Low As $23.00
    $23.00
    SIEMENS 540-865F

    SIEMENS

    LANDIS & GYR

    540-865F

    DISCONTINUED BY MANUFACTURER, TERMINAL EQUIPMENT CONTROLLER, 24VAC, 50/60HZ, NO REPLACEMENT
    Buy Surplus As Low As $394.27
    $394.27
    Repair Yours $356.00
    SIEMENS 540-865EN

    SIEMENS

    LANDIS & GYR

    540-865EN

    DISCONTINUED BY MANUFACTURER, TEC VAV W/0-10 V REHEAT CONTROL, HEAT MODULATION & CO2 MONITORING CONTROLLER, 24 VAC INPUT, 50/60 HZ, FLN 1/8 LOAD, 12 VA MAX OUTPUT EACH OUTPUT, 84 VA MAX TOTA ...
    Buy Surplus As Low As $442.13
    $442.13
    Repair Yours $349.00
    SIEMENS 540-865E

    SIEMENS

    LANDIS & GYR

    540-865E

    TERMINAL EQUIPMENT CONTROLLER, 28 POSITION TERMINAL, 2X 3 POSITION TERMINALS, 24 V
    Buy Surplus As Low As $442.13
    $442.13
    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
    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 540-865A

    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 540-863LN

    SIEMENS

    LANDIS & GYR

    540-863LN

    DISCONTINUED BY MANUFACTURER, AIR HANDLING UNIT CONTROLLER, 24 VAC, 50/60 HZ
    Buy Surplus As Low As $530.55
    $530.55
    Repair Yours $415.00
    SIEMENS 540-863L

    SIEMENS

    LANDIS & GYR

    540-863L

    DISCONTINUED BY MANUFACTURER, AIR HANDLING UNIT CONTROLLER, 24 VAC, 50/60 HZ
    Buy Surplus As Low As $515.10
    $515.10
    Repair Yours $415.00
    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 540-863B

    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 540863A

    SIEMENS

    LANDIS & GYR

    540863A

    DISCONTINUED BY MANUFACTURER, TERMINAL EQUIPMENT CONTROLLER, APOGEE SERIES, SMALL POINT AHU, 24 VAC, 50/60 HZ, 84 VA MAX, FOR VARIABLE AIR VOLUME TERMINAL BOX APPLICATIONS
    Buy Surplus As Low As $673.67
    $673.67
    Repair Yours $490.00
    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 540-847

    SIEMENS

    LANDIS & GYR

    540-847

    HEAT PUMP HUMIDITY CONTROLLER
    Buy Surplus As Low As $234.07
    $234.07
    Repair Yours $300.00
    SIEMENS 540-844

    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 540-841

    SIEMENS

    LANDIS & GYR

    540-841

    DISCONTINUED BY MANUFACTURER, HEAT PUMP CONTROLLER, 24VAC, 0-10 V SEQUENCE
    Buy Surplus As Low As $625.22
    $625.22
    Repair Yours $475.00
    SIEMENS 540-837

    SIEMENS

    LANDIS & GYR

    540-837

    HEAT PUMP HUMIDITY CONTROLLER
    Buy Surplus As Low As $750.00
    $750.00
    Repair Yours $640.00
    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 540-800

    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 540-717

    SIEMENS

    LANDIS & GYR

    540-717

    PRESSURE CONTROLLER W/AUTOZERO
    $3,286.00 Buy Surplus As Low As $1,972.00
    $1,972.00
    Repair Yours $1,643.00
    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 540-676FA

    SIEMENS

    LANDIS & GYR

    540-676FA

    ROOM TEMPERATURE SENSOR-W/STPT
    Buy Surplus As Low As $192.00
    $192.00
    Repair Yours $300.00
    SIEMENS 540-672FB

    SIEMENS

    LANDIS & GYR

    540-672FB

    ROOM TEMPERATURE SENSOR-W/OVRD
    $170.00 Buy Surplus As Low As $102.00
    $102.00
    Repair Yours $300.00
    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 540-672CB

    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 540-672CA

    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 540-666FB

    SIEMENS

    LANDIS & GYR

    540-666FB

    ROOM TEMPERATURE SENSOR W/IND
    $165.00 Buy Surplus As Low As $99.00
    $99.00
    Repair Yours $300.00
    SIEMENS 540-666FA

    SIEMENS

    LANDIS & GYR

    540-666FA

    ROOM TEMPERATURE SENSOR W/IND
    $165.00 Buy Surplus As Low As $99.00
    $99.00
    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 540-664A

    SIEMENS

    LANDIS & GYR

    540-664A

    ROOM TEMPERATURE SENSOR W/STPT BEIGE
    Buy Surplus As Low As $144.00
    $144.00
    Repair Yours $300.00
    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 $189.33
    $189.33
    Repair Yours $300.00
    SIEMENS 540-662A

    SIEMENS

    LANDIS & GYR

    540-662A

    ROOM TEMPERATURE SENSOR BEIGE
    Buy Surplus As Low As $120.00
    $120.00
    Repair Yours $300.00
    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 540-518

    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 540-516

    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 540-514

    SIEMENS

    LANDIS & GYR

    540-514

    DISCONTINUED BY MANUFACTURER, TERMINAL BOX, CONTROLLER, 24VAC, 50/60 HZ
    Buy Surplus As Low As $857.49
    $857.49
    Repair Yours $698.00
    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 540-509N

    SIEMENS

    LANDIS & GYR

    540-509N

    DISCONTINUED BY MANUFACTURER, VENT CONTROLLER, INPUT 24 VAC, 50/60 HZ, OUT 12 VA MAX OUTPUT
    Buy Surplus As Low As $757.34
    $757.34
    Repair Yours $598.00
    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 540-508

    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 540-506N

    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 540-506

    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 540-505N

    SIEMENS

    LANDIS & GYR

    540-505N

    DISCONTINUED BY MANUFACTURER, HEAT PUMP CONTROLLER, APOGEE, MULTI-STAGE
    Buy Surplus As Low As $693.88
    $693.88
    Repair Yours $548.00
    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 540-480

    SIEMENS

    LANDIS & GYR

    540-480

    TERMINAL BLOCK REPLACEMENT KIT
    $75.00 Buy Surplus As Low As $45.00
    $45.00
    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 540-400

    SIEMENS

    LANDIS & GYR

    540-400

    DISCONTINUED BY MANUFACTURER, VENT CONTROLLER UNIT
    Buy Surplus As Low As $420.00
    $420.00
    Repair Yours $350.00
    Previous Next
    10 11 12 13 14 15 16 17 18 19 20