购买 4 relay module arduino connection

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$2.04
4 Channel Relay Module 4-Channel Relay Control Board With Optocoupler. Relay Output 4 Way Relay
AliExpress
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4 Channel Relay Module 4-Channel Relay Control Board With Optocoupler. Relay Output 4 Way Relay
AliExpress
$3.44
1PCS 1/2/4 Channel 3V Relay Module Board Low Level Trigger Relay Output Relay Module With LED
AliExpress
$3.44
1PCS 1/2/4 Channel 3V Relay Module Board Low Level Trigger Relay Output Relay Module With LED
AliExpress
$4.48
3V 3.3V 4 Channel Relay Module Low Level Trigger With Lamp Relay Output 4 Way Relay Module For
AliExpress
$4.48
3V 3.3V 4 Channel Relay Module Low Level Trigger With Lamp Relay Output 4 Way Relay Module For
AliExpress
$4.39
1PCS 1/2/4 Channel 3V 5V 12V Relay Module Board 3.3V Low Level Shooting With Lamp
AliExpress
$4.39
1PCS 1/2/4 Channel 3V 5V 12V Relay Module Board 3.3V Low Level Shooting With Lamp
AliExpress
$3.71
4 Channel Optocoupler Relay Module Board High & Low Trigger Relay Module 5V/12V/24V
AliExpress
$3.71
4 Channel Optocoupler Relay Module Board High & Low Trigger Relay Module 5V/12V/24V
AliExpress
$3.91
5V 4 Way Relay Module For Arduino 4 Channel Relay Module With Optocoupler Relay Output For Arduino
AliExpress
$3.91
5V 4 Way Relay Module For Arduino 4 Channel Relay Module With Optocoupler Relay Output For Arduino
AliExpress
$1.74
Relay Module 1 2 4 6 8 Channel 5V 12V 24V Relay Module Board With Optocoupler Support High And Low
AliExpress
$1.74
Relay Module 1 2 4 6 8 Channel 5V 12V 24V Relay Module Board With Optocoupler Support High And Low
AliExpress
$1.62
1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High Low Level Trigger
AliExpress
$1.62
1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High Low Level Trigger
AliExpress
$1.70
1 2 4 8 Channel 5V/12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
$1.70
1 2 4 8 Channel 5V/12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
$1.79
1 2 4 8 Channel Relay Module Board Shield 5V 12V 24V With Optocoupler Support High And Low Level
AliExpress
$1.79
1 2 4 8 Channel Relay Module Board Shield 5V 12V 24V With Optocoupler Support High And Low Level
AliExpress
$2.80
1/2/4 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
Free shipping
$2.80
1/2/4 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$2.55
$4.13
3V 1/2/4 Channel Relay Module Low Level Triggered Luminous Relay Output Relay Module Adopts 8550
AliExpress
折扣 38%
$2.55
$4.13
3V 1/2/4 Channel Relay Module Low Level Triggered Luminous Relay Output Relay Module Adopts 8550
AliExpress
$1.51
$2.10
1 2 4 8 Channel 5V 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
折扣 28%
$1.51
$2.10
1 2 4 8 Channel 5V 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
$5.45
$7.05
4 Channel Relay Module 5V 12V 24V Board Shield With Optocoupler Isolation Support High And Low Level
AliExpress
折扣 22%
$5.45
$7.05
4 Channel Relay Module 5V 12V 24V Board Shield With Optocoupler Isolation Support High And Low Level
AliExpress
$6.00
4 Channel 3V 5V 12V 24V Songle Relay Module Driver Board PLC Board Relay Module SPDT 10Amp Pluggable
AliExpress
Free shipping
$6.00
4 Channel 3V 5V 12V 24V Songle Relay Module Driver Board PLC Board Relay Module SPDT 10Amp Pluggable
AliExpress
$2.48
3V 1/2/4-Channel Relay Module Low-Level Trigger Module Compatible With Arduino Etc.
AliExpress
$2.48
3V 1/2/4-Channel Relay Module Low-Level Trigger Module Compatible With Arduino Etc.
AliExpress
$2.50
$5.16
5V Relay 1 2 4 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino
AliExpress
折扣 51%
$2.50
$5.16
5V Relay 1 2 4 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino
AliExpress
$10.95
Velleman 4 Channel Relay Module Arduino Compatible By Whadda
Jameco Electronics
$10.95
Velleman 4 Channel Relay Module Arduino Compatible By Whadda
Jameco Electronics
$3.03
1-5PCS 4 Channel Relay Board AVR 51 PIC 5V 12V 4-Channel Relay Module With Optocoupler Relay 4 Way
AliExpress
$3.03
1-5PCS 4 Channel Relay Board AVR 51 PIC 5V 12V 4-Channel Relay Module With Optocoupler Relay 4 Way
AliExpress
$1.30
1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low Level
AliExpress
$1.30
1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low Level
AliExpress
$1.70
1PCS 1 2 4 8 Channel 5V 12V 24V Relay Module Board With Optocoupler Support High And Low Level
AliExpress
$1.70
1PCS 1 2 4 8 Channel 5V 12V 24V Relay Module Board With Optocoupler Support High And Low Level
AliExpress
$0.38
1 2 4 6 8 Channel Way 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low
AliExpress
$0.38
1 2 4 6 8 Channel Way 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low
AliExpress
$3.00
5V 12V 4-Channel Relay Module Shield ARM PIC AVR DSP Electronic 5V 4 Channel Relay.4 Road 5V Relay
AliExpress
$3.00
5V 12V 4-Channel Relay Module Shield ARM PIC AVR DSP Electronic 5V 4 Channel Relay.4 Road 5V Relay
AliExpress
$2.54
1/2/4/8 Channel 5V Solid State Relay Module Low Level Trigger AC 250V 2A With Fuse For Arduino Home
AliExpress
Free shipping
$2.54
1/2/4/8 Channel 5V Solid State Relay Module Low Level Trigger AC 250V 2A With Fuse For Arduino Home
AliExpress
$2.43
1 2 4 8 Channel 5V 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
$2.43
1 2 4 8 Channel 5V 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
$4.05
5V 4 Channel Relay Shield Module For Arduino UNO R3 Mega2560 Electronic 4 Way Four Channel Relay
AliExpress
$4.05
5V 4 Channel Relay Shield Module For Arduino UNO R3 Mega2560 Electronic 4 Way Four Channel Relay
AliExpress
$4.09
4 Channel 5V Relay Shield Module, Four Way Relay Control Board Relay Expansion Board For Arduino UNO
AliExpress
$4.09
4 Channel 5V Relay Shield Module, Four Way Relay Control Board Relay Expansion Board For Arduino UNO
AliExpress
$1.77
1 2 4 6 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low Level
AliExpress
$1.77
1 2 4 6 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low Level
AliExpress
$6.11
1/2/4/8/16 Channel Relay Control Module 5V 20A Support High / Low Level Voltage Trigger Controller
AliExpress
$6.11
1/2/4/8/16 Channel Relay Control Module 5V 20A Support High / Low Level Voltage Trigger Controller
AliExpress
$0.84
$1.00
1 2 6 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low Level
AliExpress
Free shipping
折扣 16%
$0.84
$1.00
1 2 6 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low Level
AliExpress
$19.96
$28.52
4 Channel Relay Module 30A DC7-28/5V WIFI Bluetooth Relay Module ESP32-WROOM Development Board
AliExpress
折扣 30%
$19.96
$28.52
4 Channel Relay Module 30A DC7-28/5V WIFI Bluetooth Relay Module ESP32-WROOM Development Board
AliExpress
$1.75
5V 12V 1 2 4 6 8 Channel Relay Module With Optocoupler Relay Output 1 2 4 6 8 Way Relay Module For
AliExpress
$1.75
5V 12V 1 2 4 6 8 Channel Relay Module With Optocoupler Relay Output 1 2 4 6 8 Way Relay Module For
AliExpress
$0.73
1 2 4 6 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low Level
AliExpress
$0.73
1 2 4 6 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High And Low Level
AliExpress
$1.75
1-10Pcs 5V 4 Channel Relay Shield Module For Arduino R3 ARM PIC AVR DSP Electronic 4 Channel Relay
AliExpress
$1.75
1-10Pcs 5V 4 Channel Relay Shield Module For Arduino R3 ARM PIC AVR DSP Electronic 4 Channel Relay
AliExpress
$0.42
$0.84
5V 9V 12V 24V 1 2 4 Channel Relay Module Board Shield For Arduino With Optocoupler Support High And
AliExpress
Free shipping
折扣 50%
$0.42
$0.84
5V 9V 12V 24V 1 2 4 Channel Relay Module Board Shield For Arduino With Optocoupler Support High And
AliExpress
$1.69
1 2 4 8 Channel 5V 12V Relay Module With Optocoupler, High Low Level Trigger Shield For Arduino PIC
AliExpress
$1.69
1 2 4 8 Channel 5V 12V Relay Module With Optocoupler, High Low Level Trigger Shield For Arduino PIC
AliExpress
4 Relay module interface with an Arduino UNO. #electronics #arduino #iot #arduinoproject #tutorial
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4 Relay module interface with an Arduino UNO. #electronics #ardui…
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购买 4 relay module arduino connection

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$2.04
4 Channel Relay Module 4-Channel Relay Control Board With Optocoupler. Relay Output 4 Way Relay
AliExpress
$2.04
4 Channel Relay Module 4-Channel Relay Control Board With Optocoupler. Relay Output 4 Way Relay
AliExpress
$3.44
1PCS 1/2/4 Channel 3V Relay Module Board Low Level Trigger Relay Output Relay Module With LED
AliExpress
$3.44
1PCS 1/2/4 Channel 3V Relay Module Board Low Level Trigger Relay Output Relay Module With LED
AliExpress
$4.48
3V 3.3V 4 Channel Relay Module Low Level Trigger With Lamp Relay Output 4 Way Relay Module For
AliExpress
$4.48
3V 3.3V 4 Channel Relay Module Low Level Trigger With Lamp Relay Output 4 Way Relay Module For
AliExpress
$4.39
1PCS 1/2/4 Channel 3V 5V 12V Relay Module Board 3.3V Low Level Shooting With Lamp
AliExpress
$4.39
1PCS 1/2/4 Channel 3V 5V 12V Relay Module Board 3.3V Low Level Shooting With Lamp
AliExpress
$3.71
4 Channel Optocoupler Relay Module Board High & Low Trigger Relay Module 5V/12V/24V
AliExpress
$3.71
4 Channel Optocoupler Relay Module Board High & Low Trigger Relay Module 5V/12V/24V
AliExpress
$3.91
5V 4 Way Relay Module For Arduino 4 Channel Relay Module With Optocoupler Relay Output For Arduino
AliExpress
$3.91
5V 4 Way Relay Module For Arduino 4 Channel Relay Module With Optocoupler Relay Output For Arduino
AliExpress
$1.74
Relay Module 1 2 4 6 8 Channel 5V 12V 24V Relay Module Board With Optocoupler Support High And Low
AliExpress
$1.74
Relay Module 1 2 4 6 8 Channel 5V 12V 24V Relay Module Board With Optocoupler Support High And Low
AliExpress
$1.62
1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High Low Level Trigger
AliExpress
$1.62
1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High Low Level Trigger
AliExpress
$1.70
1 2 4 8 Channel 5V/12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
$1.70
1 2 4 8 Channel 5V/12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
$1.79
1 2 4 8 Channel Relay Module Board Shield 5V 12V 24V With Optocoupler Support High And Low Level
AliExpress
$1.79
1 2 4 8 Channel Relay Module Board Shield 5V 12V 24V With Optocoupler Support High And Low Level
AliExpress
$2.80
1/2/4 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
Free shipping
$2.80
1/2/4 Channel Relay Module 30A With Optocoupler Isolation 5V 12V 24V Supports High And Low Triger
AliExpress
$2.55
$4.13
3V 1/2/4 Channel Relay Module Low Level Triggered Luminous Relay Output Relay Module Adopts 8550
AliExpress
折扣 38%
$2.55
$4.13
3V 1/2/4 Channel Relay Module Low Level Triggered Luminous Relay Output Relay Module Adopts 8550
AliExpress
$1.51
$2.10
1 2 4 8 Channel 5V 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
折扣 28%
$1.51
$2.10
1 2 4 8 Channel 5V 12V Relay Module Board Shield With Optocoupler Support High And Low Level Trigger
AliExpress
$5.45
$7.05
4 Channel Relay Module 5V 12V 24V Board Shield With Optocoupler Isolation Support High And Low Level
AliExpress
折扣 22%
$5.45
$7.05
4 Channel Relay Module 5V 12V 24V Board Shield With Optocoupler Isolation Support High And Low Level
AliExpress
$6.00
4 Channel 3V 5V 12V 24V Songle Relay Module Driver Board PLC Board Relay Module SPDT 10Amp Pluggable
AliExpress
Free shipping
$6.00
4 Channel 3V 5V 12V 24V Songle Relay Module Driver Board PLC Board Relay Module SPDT 10Amp Pluggable
AliExpress
$2.48
3V 1/2/4-Channel Relay Module Low-Level Trigger Module Compatible With Arduino Etc.
AliExpress
$2.48
3V 1/2/4-Channel Relay Module Low-Level Trigger Module Compatible With Arduino Etc.
AliExpress
$2.50
$5.16
5V Relay 1 2 4 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino
AliExpress
折扣 51%
$2.50
$5.16
5V Relay 1 2 4 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino
AliExpress
$10.95
Velleman 4 Channel Relay Module Arduino Compatible By Whadda
Jameco Electronics
$10.95
Velleman 4 Channel Relay Module Arduino Compatible By Whadda
Jameco Electronics