购买 1Channel Relay Module

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$91.00
Relay/analog Combo Module: 3-pt out, 1-ch in, 1-ch out (PN# CFW320-IOAR)
Automation Direct
$91.00
Relay/analog Combo Module: 3-pt out, 1-ch in, 1-ch out (PN# CFW320-IOAR)
Automation Direct
$68.00
Relay/analog Combo Module: 4-pt in, 2-pt out, 1-ch in, 1-ch out (PN# 14741859)
Automation Direct
$68.00
Relay/analog Combo Module: 4-pt in, 2-pt out, 1-ch in, 1-ch out (PN# 14741859)
Automation Direct
$0.44
1Channel 5V Relay Module Optocoupler Isolated High-Low Trigger Single Chip Red Board 1 Way
AliExpress
$0.44
1Channel 5V Relay Module Optocoupler Isolated High-Low Trigger Single Chip Red Board 1 Way
AliExpress
$77.00
Relay/analog Combo Module: 5-pt in, 5-pt out, 1-ch in, 1-ch out (PN# 14968050)
Automation Direct
$77.00
Relay/analog Combo Module: 5-pt in, 5-pt out, 1-ch in, 1-ch out (PN# 14968050)
Automation Direct
$3.26
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$3.26
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$0.36
$0.45
One 1 Channel Relay Module DC 5V 9V 12V 24V High And Low Level Trigger Relay Control Board With
AliExpress
折扣 19%
$0.36
$0.45
One 1 Channel Relay Module DC 5V 9V 12V 24V High And Low Level Trigger Relay Control Board With
AliExpress
$1.20
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$1.20
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$1.71
One 1 Channel Relay Module DC 5V 12V 24V High / Low Level Trigger Relay Modulewith Optocoupler Red
AliExpress
$1.71
One 1 Channel Relay Module DC 5V 12V 24V High / Low Level Trigger Relay Modulewith Optocoupler Red
AliExpress
$11.99
Teyleten Robot DC 1 Channel Optocoupler 3V/3.3V Relay High Level Driver Module Isolated Drive Control Board 3V/3.3V Relay Module For Arduino (Pack Of
Amazon.com
197
$11.99
Teyleten Robot DC 1 Channel Optocoupler 3V/3.3V Relay High Level Driver Module Isolated Drive Control Board 3V/3.3V Relay Module For Arduino (Pack Of
Amazon.com
$2.10
$4.15
1 Channel 5V Relay Module With Optocoupler Isolation Relay MCU Expansion Board High Level Trigger
AliExpress
折扣 49%
$2.10
$4.15
1 Channel 5V Relay Module With Optocoupler Isolation Relay MCU Expansion Board High Level Trigger
AliExpress
$1.12
$1.52
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
Free shipping
折扣 26%
$1.12
$1.52
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$2.13
1-Channel 3V Relay Module Optocoupler Isolation High/Low Level Trigger Drive Control Module For
AliExpress
$2.13
1-Channel 3V Relay Module Optocoupler Isolation High/Low Level Trigger Drive Control Module For
AliExpress
$1.98
$2.56
Relay Module 1 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High And Low Level
AliExpress
折扣 22%
$1.98
$2.56
Relay Module 1 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High And Low Level
AliExpress
$11.99
AEDIKO 10Pcs Relay Module DC 12V Relay Board 1 Channel With Optocoupler Isolation Support High Or Low Level
Amazon.com
49
$11.99
AEDIKO 10Pcs Relay Module DC 12V Relay Board 1 Channel With Optocoupler Isolation Support High Or Low Level
Amazon.com
$2.11
5V 9V 12V 24V One 1 Channel Relay Module Shield With Optocoupler Isolation Relay Switch Board
AliExpress
$2.11
5V 9V 12V 24V One 1 Channel Relay Module Shield With Optocoupler Isolation Relay Switch Board
AliExpress
$0.97
$1.05
1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
Free shipping
$0.97
$1.05
1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$1.52
$3.16
1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For
AliExpress
折扣 51%
$1.52
$3.16
1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For
AliExpress
$88.00
Relay/analog Combo Module: 8-pt in, 5-pt out, 1-ch in, 1-ch out (PN# 14742006)
Automation Direct
$88.00
Relay/analog Combo Module: 8-pt in, 5-pt out, 1-ch in, 1-ch out (PN# 14742006)
Automation Direct
$3.03
DC 5V 12V 24V 1 Channel Relay Module 30A With Optocoupler Isolation High And Low Level Trigger Relay
AliExpress
$3.03
DC 5V 12V 24V 1 Channel Relay Module 30A With Optocoupler Isolation High And Low Level Trigger Relay
AliExpress
$3.38
1 Way 2 4 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low
AliExpress
$3.38
1 Way 2 4 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low
AliExpress
$2.17
3V/5V/12V/24V 1-Channel Relay Module With Optical Isolation - 10A 250V AC/30V DC, Dual Power,
AliExpress
$2.17
3V/5V/12V/24V 1-Channel Relay Module With Optical Isolation - 10A 250V AC/30V DC, Dual Power,
AliExpress
$0.38
$0.78
1 Channel 5V 9V 12V 24V Relay Module Board Shield With Optocoupler 12V Relay Module Support High And
AliExpress
折扣 51%
$0.38
$0.78
1 Channel 5V 9V 12V 24V Relay Module Board Shield With Optocoupler 12V Relay Module Support High And
AliExpress
$9.99
NOYITO 6-Channel Relay Module 5V 12V 24V High Low Level Trigger With Optocoupler Isolation Relay Load AC 250V 10A DC 30V 10A (DC 24V, Blue)
Amazon.com
20
$9.99
NOYITO 6-Channel Relay Module 5V 12V 24V High Low Level Trigger With Optocoupler Isolation Relay Load AC 250V 10A DC 30V 10A (DC 24V, Blue)
Amazon.com
$1.94
$3.76
1-10Pcs 1 Channel 12V Relay Module Board Shield With Optocoupler Relay Module Support High And Low
AliExpress
折扣 48%
$1.94
$3.76
1-10Pcs 1 Channel 12V Relay Module Board Shield With Optocoupler Relay Module Support High And Low
AliExpress
$1.02
$1.11
1/2/5PCS 5V 1 Channel Relay Module With Optocoupler KY-019 1 Way For Arduino
AliExpress
$1.02
$1.11
1/2/5PCS 5V 1 Channel Relay Module With Optocoupler KY-019 1 Way For Arduino
AliExpress
$13.99
AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module With Optocoupler Opto Isolation High Level Trigger For IOT ESP8266 Development Board
Amazon.com
113
$13.99
AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module With Optocoupler Opto Isolation High Level Trigger For IOT ESP8266 Development Board
Amazon.com
$2.01
$2.07
5V 12V Low Level Trigger 1 Channel Relay Module Interface Board Shield For PIC AVR DSP ARM MCU
AliExpress
Free shipping
$2.01
$2.07
5V 12V Low Level Trigger 1 Channel Relay Module Interface Board Shield For PIC AVR DSP ARM MCU
AliExpress
$1.80
1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For
AliExpress
$1.80
1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For
AliExpress
$0.99
$2.75
DC 5V/12V/24V 1 Channel Latching Relay Module With Touch Bistable Switch MCU Control For Arduino
AliExpress
折扣 64%
$0.99
$2.75
DC 5V/12V/24V 1 Channel Latching Relay Module With Touch Bistable Switch MCU Control For Arduino
AliExpress
$6.87
5V 1 Channel USB Relay Module Programmable Computer Control Relay Switch Smart Toy Home
AliExpress
$6.87
5V 1 Channel USB Relay Module Programmable Computer Control Relay Switch Smart Toy Home
AliExpress
$3.00
1 Channel 3V 5V 12V 24V Songle Relay Module Driver Board PLC Board Relay Module SPDT 10Amp Pluggable
AliExpress
Free shipping
$3.00
1 Channel 3V 5V 12V 24V Songle Relay Module Driver Board PLC Board Relay Module SPDT 10Amp Pluggable
AliExpress
$3.01
1/5/10Pcs Javino 1 Channel 30A Relay Module With Optocoupler Isolation 5V/12V/24V High/Low Level
AliExpress
Free shipping
$3.01
1/5/10Pcs Javino 1 Channel 30A Relay Module With Optocoupler Isolation 5V/12V/24V High/Low Level
AliExpress
$4.47
$5.79
Hot DC12V 24V 1CH 1Channel 10A Relay Remote Control Switch Wireless Switch Remote Control Receiver
AliExpress
折扣 22%
$4.47
$5.79
Hot DC12V 24V 1CH 1Channel 10A Relay Remote Control Switch Wireless Switch Remote Control Receiver
AliExpress
$10.52
$17.35
5V/12V 30A 1-Channel Relay Module+Electronic With Optocoupler 5V/12V 30A Two-Way Isolation Relay
AliExpress
折扣 39%
$10.52
$17.35
5V/12V 30A 1-Channel Relay Module+Electronic With Optocoupler 5V/12V 30A Two-Way Isolation Relay
AliExpress
$53.06
$58.95
40 Amps, 7-20 V MSD Relay Modules | MSD Ignition 7566-1
Summit Racing
1
$53.06
$58.95
40 Amps, 7-20 V MSD Relay Modules | MSD Ignition 7566-1
Summit Racing
$1.10
$2.15
Mini 1 Channel DC 5V 12V DC DPDT Relay Board Double Pole Double Throw Switch Module HK19F-DC PCB For
AliExpress
Free shipping
折扣 48%
$1.10
$2.15
Mini 1 Channel DC 5V 12V DC DPDT Relay Board Double Pole Double Throw Switch Module HK19F-DC PCB For
AliExpress
ESP8266 NodeMCU Relay Module - Control AC Appliances (Web Server) | Random Nerd Tutorials
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How to Set Up a 5V Relay on the Arduino
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2015年11月28日
circuitbasics.com
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购买 1Channel Relay Module

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$91.00
Relay/analog Combo Module: 3-pt out, 1-ch in, 1-ch out (PN# CFW320-IOAR)
Automation Direct
$91.00
Relay/analog Combo Module: 3-pt out, 1-ch in, 1-ch out (PN# CFW320-IOAR)
Automation Direct
$68.00
Relay/analog Combo Module: 4-pt in, 2-pt out, 1-ch in, 1-ch out (PN# 14741859)
Automation Direct
$68.00
Relay/analog Combo Module: 4-pt in, 2-pt out, 1-ch in, 1-ch out (PN# 14741859)
Automation Direct
$0.44
1Channel 5V Relay Module Optocoupler Isolated High-Low Trigger Single Chip Red Board 1 Way
AliExpress
$0.44
1Channel 5V Relay Module Optocoupler Isolated High-Low Trigger Single Chip Red Board 1 Way
AliExpress
$77.00
Relay/analog Combo Module: 5-pt in, 5-pt out, 1-ch in, 1-ch out (PN# 14968050)
Automation Direct
$77.00
Relay/analog Combo Module: 5-pt in, 5-pt out, 1-ch in, 1-ch out (PN# 14968050)
Automation Direct
$3.26
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$3.26
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$0.36
$0.45
One 1 Channel Relay Module DC 5V 9V 12V 24V High And Low Level Trigger Relay Control Board With
AliExpress
折扣 19%
$0.36
$0.45
One 1 Channel Relay Module DC 5V 9V 12V 24V High And Low Level Trigger Relay Control Board With
AliExpress
$1.20
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$1.20
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$1.71
One 1 Channel Relay Module DC 5V 12V 24V High / Low Level Trigger Relay Modulewith Optocoupler Red
AliExpress
$1.71
One 1 Channel Relay Module DC 5V 12V 24V High / Low Level Trigger Relay Modulewith Optocoupler Red
AliExpress
$11.99
Teyleten Robot DC 1 Channel Optocoupler 3V/3.3V Relay High Level Driver Module Isolated Drive Control Board 3V/3.3V Relay Module For Arduino (Pack Of
Amazon.com
197
$11.99
Teyleten Robot DC 1 Channel Optocoupler 3V/3.3V Relay High Level Driver Module Isolated Drive Control Board 3V/3.3V Relay Module For Arduino (Pack Of
Amazon.com
$2.10
$4.15
1 Channel 5V Relay Module With Optocoupler Isolation Relay MCU Expansion Board High Level Trigger
AliExpress
折扣 49%
$2.10
$4.15
1 Channel 5V Relay Module With Optocoupler Isolation Relay MCU Expansion Board High Level Trigger
AliExpress
$1.12
$1.52
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
Free shipping
折扣 26%
$1.12
$1.52
ONE 1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$2.13
1-Channel 3V Relay Module Optocoupler Isolation High/Low Level Trigger Drive Control Module For
AliExpress
$2.13
1-Channel 3V Relay Module Optocoupler Isolation High/Low Level Trigger Drive Control Module For
AliExpress
$1.98
$2.56
Relay Module 1 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High And Low Level
AliExpress
折扣 22%
$1.98
$2.56
Relay Module 1 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High And Low Level
AliExpress
$11.99
AEDIKO 10Pcs Relay Module DC 12V Relay Board 1 Channel With Optocoupler Isolation Support High Or Low Level
Amazon.com
49
$11.99
AEDIKO 10Pcs Relay Module DC 12V Relay Board 1 Channel With Optocoupler Isolation Support High Or Low Level
Amazon.com
$2.11
5V 9V 12V 24V One 1 Channel Relay Module Shield With Optocoupler Isolation Relay Switch Board
AliExpress
$2.11
5V 9V 12V 24V One 1 Channel Relay Module Shield With Optocoupler Isolation Relay Switch Board
AliExpress
$0.97
$1.05
1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
Free shipping
$0.97
$1.05
1 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$1.52
$3.16
1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For
AliExpress
折扣 51%
$1.52
$3.16
1 Channel 5V / 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger For
AliExpress
$88.00
Relay/analog Combo Module: 8-pt in, 5-pt out, 1-ch in, 1-ch out (PN# 14742006)
Automation Direct
$88.00
Relay/analog Combo Module: 8-pt in, 5-pt out, 1-ch in, 1-ch out (PN# 14742006)
Automation Direct