Low Cost Relay Controllers

Displaying 1 - 50 of 74 Products in this Category.
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R110
1-Channel 10-Amp RS232 SPDT Relay Controller
  • 1 Relays - 10 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $63.00               Full Description
R110RS
1-Channel 10-Amp SPDT Relay Controller with RS-232 Interface
  • 1 Relays - 10 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $80.00               Full Description
R120
1-Channel 20-Amp SPDT High-Power Relay Controller Board
  • 1 Relays - 20 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $68.00               Full Description
R120HP
LOW COST 1-Channel 20A SPDT RS-232 Relay Controller
  • 1 Relays - 20 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $34.00               Full Description
R120HPRS
LOW COST 1-Channel 20A SPDT Relay Controller with RS-232 Interface
  • 1 Relays - 20 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $45.00               Full Description
R120RS
1-Channel 20A SPDT Relay Controller with RS-232 Interface
  • 1 Relays - 20 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $80.00               Full Description
R130
1-Channel 30-Amp SPST High-Power RS-232 Relay Controller Board
  • 1 Relays - 30 Amp SPST
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $80.00               Full Description
R130RS
1-Channel 30A SPST Relay Controller with RS-232 Interface
  • 1 Relays - 30 Amp SPST
  • Serial Communications
  • Ideal Use: Power Switching
  • Series
           $91.00               Full Description
R15
1-Channel 5-Amp RS232 SPDT Relay Controller
  • 1 Relays - 5 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Series
           $51.00               Full Description
R15RS
1-Channel 5-Amp SPDT Relay Controller with RS-232 Interface
  • 1 Relays - 5 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Series
           $68.00               Full Description
R210
RS-232 2-Channel 10-Amp SPDT Relay Controller Board
  • 2 Relays - 10 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $80.00               Full Description
R210RS
2-Channel RS-232 10-Amp SPDT Relay Controller with RS-232 Interface
  • 2 Relays - 10 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $91.00               Full Description
R21DPDT
RS-232 2-Channel 1-Amp DPDT Small Signal Relay Controller Board
  • 2 Relays - 1 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $68.00               Full Description
R21DPDTCN
2-Channel 1-Amp DPDT RS-232 Relay Controller with Relay Interface
  • 2 Relays - 1 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $80.00               Full Description
R21DPDTCNRS
2-Channel 1-Amp DPDT Relay Controller with RS-232 and Relay Interface
  • 2 Relays - 1 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $91.00               Full Description
R220
2-Channel RS-232 20-Amp SPDT High-Power Relay Controller Board
  • 2 Relays - 20 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $91.00               Full Description
R220HP
LOW COST 2-Channel 20A SPDT RS-232 Relay Controller
  • 2 Relays - 20 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $40.00               Full Description
R220HPRS
LOW COST 2-Channel 20A SPDT Relay Controller with RS-232 Interface
  • 2 Relays - 20 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $51.00               Full Description
R220RS
2-Channel 20A SPDT Relay Controller with RS-232 Interface
  • 2 Relays - 20 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $103.00               Full Description
R230
2-Channel 30-Amp SPST High-Power RS-232 Relay Controller Board
  • 2 Relays - 30 Amp SPST
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $103.00               Full Description
R230RS
2-Channel 30A SPST Relay Controller with RS-232 Interface
  • 2 Relays - 30 Amp SPST
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $114.00               Full Description
R23DPDT
RS-232 2-Channel 3-Amp DPDT Signal Relay Controller Board
  • 2 Relays - 3 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $74.00               Full Description
R23DPDTCN
2-Channel 3-Amp DPDT RS-232 Relay Controller with Relay Interface
  • 2 Relays - 3 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $86.00               Full Description
R23DPDTCNRS
2-Channel 3-Amp DPDT Relay Controller with RS-232 and Relay Interface
  • 2 Relays - 3 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $97.00               Full Description
R25
RS-232 2-Channel 5-Amp SPDT Relay Controller Board
  • 2 Relays - 5 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $68.00               Full Description
R25DPDT
2-Channel 5-Amp DPDT High-Current Signal Relay Controller Board
  • 2 Relays - 5 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $80.00               Full Description
R25DPDTCN
2-Channel 5-Amp DPDT RS-232 Relay Controller with Relay Interface
  • 2 Relays - 5 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $91.00               Full Description
R25DPDTCNRS
2-Channel 5-Amp DPDT Relay Controller with RS-232 and Relay Interface
  • 2 Relays - 5 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $103.00               Full Description
R410PRO
RS-232 4-Channel SPDT Relay Controller Board with 10 Amp Relays
  • 4 Relays - 10 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $126.00               Full Description
R41DPDT
Quad 1-Amp DPDT Small Signal Relay Controller Board
  • 4 Relays - 1 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $103.00               Full Description
R41DPDTCN
4-Channel 1-Amp DPDT RS-232 Relay Controller with Relay Interface
  • 4 Relays - 1 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $114.00               Full Description
R41DPDTCNRS
4-Channel 1-Amp DPDT Relay Controller with RS-232 and Relay Interface
  • 4 Relays - 1 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $126.00               Full Description
R420
Quad 20-Amp SPDT High-Power Relay Controller Board
  • 4 Relays - 20 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $172.00               Full Description
R430
Quad 30-Amp SPST High-Power Relay Controller Board
  • 4 Relays - 30 Amp SPST
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $195.00               Full Description
R43DPDT
Quad 3-Amp DPDT Signal Relay Controller Board
  • 4 Relays - 3 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $114.00               Full Description
R43DPDTCN
4-Channel 3-Amp DPDT RS-232 Relay Controller with Relay Interface
  • 4 Relays - 3 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $126.00               Full Description
R43DPDTCNRS
4-Channel 3-Amp DPDT Relay Controller with RS-232 and Relay Interface
  • 4 Relays - 3 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $137.00               Full Description
R45DPDT
Quad 5-Amp DPDT High-Current Signal Relay Controller Board
  • 4 Relays - 5 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $126.00               Full Description
R45DPDTCN
4-Channel 5-Amp DPDT RS-232 Relay Controller with Relay Interface
  • 4 Relays - 5 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $137.00               Full Description
R45DPDTCNRS
4-Channel 5-Amp DPDT Relay Controller with RS-232 and Relay Interface
  • 4 Relays - 5 Amp DPDT
  • Serial Communications
  • Ideal Use: Signal Switching
  • Economy Series
           $149.00               Full Description
R45PRO
RS-232 4-Channel SPDT Relay Controller Board with 5 Amp Relays
  • 4 Relays - 5 Amp SPDT
  • Serial Communications
  • Ideal Use: Power Switching
  • Economy Series
           $114.00               Full Description
SSR1x
1-Channel Solid State RS-232 Relay Controller
  • 1 Relays - Optional Amp Solid-State
  • Serial Communications
  • Ideal Use: SS Switching
  • Economy Series
           $51.00               Full Description
SSR1xRS
1-Channel Solid State Relay Controller with RS-232 Interface
  • 1 Relays - Optional Amp Solid-State
  • Serial Communications
  • Ideal Use: SS Switching
  • Economy Series
           $63.00               Full Description
SSR2x
RS-232 2-Channel Solid State Relay Controller
  • 2 Relays - Optional Amp Solid-State
  • Serial Communications
  • Ideal Use: SS Switching
  • Economy Series
           $68.00               Full Description
SSR2xRS
RS-232 2-Channel Solid State Relay Controller with RS-232 Interface
  • 2 Relays - Optional Amp Solid-State
  • Serial Communications
  • Ideal Use: SS Switching
  • Economy Series
           $80.00               Full Description
ZR110
1-Channel 10-Amp SPDT 802.15.4 Wireless Relay Controller
  • 1 Relays - 10 Amp SPDT
  • 802.15.4 Communications
  • Range: 300 ft. to 1 mi.
  • Ideal Use: Power Switching
  • Economy Series
           $107.00               Full Description
ZR110_XSC
XSC Long Range Wireless Controller 1-Channel 10-Amp SPDT
  • 1 Relays - 10 Amp SPDT
  • XSC Communications
  • Range: 1 mi. to 15 mi.
  • Ideal Use: Power Switching
  • Economy Series
           $159.00               Full Description
ZR110_ZBMESH
1-Channel 10-Amp SPDT ZB ZigBee Relay Controller
  • 1 Relays - 10 Amp SPDT
  • ZigBee Communications
  • Range: 300 ft. to 1 mi.
  • Ideal Use: Power Switching
  • Economy Series
           $107.00               Full Description
ZR120
1-Channel 20-Amp SPDT 802.15.4 Wireless Relay Controller
  • 1 Relays - 20 Amp SPDT
  • 802.15.4 Communications
  • Range: 300 ft. to 1 mi.
  • Ideal Use: Power Switching
  • Economy Series
           $113.00               Full Description
ZR120_XSC
XSC Long Range Wireless Controller 1-Channel 20-Amp SPDT
  • 1 Relays - 20 Amp SPDT
  • XSC Communications
  • Range: 1 mi. to 15 mi.
  • Ideal Use: Power Switching
  • Economy Series
           $159.00               Full Description
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NATIONAL CONTROL DEVICES, LLC

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