购买 Relay Module vs Relay

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$15.99
Dafurui 5V Relay Module8pack 1 Channel Relay Module 5V Relays Board With Optocoupler Support High/Low Level Trigger For Arduino Relays
Amazon.com
75
$15.99
Dafurui 5V Relay Module8pack 1 Channel Relay Module 5V Relays Board With Optocoupler Support High/Low Level Trigger For Arduino Relays
Amazon.com
75
$15.99
8 Channel Relay Module - Progressive Automations
Progressive Automations
$15.99
8 Channel Relay Module - Progressive Automations
Progressive Automations
$6.99
2Pcs DC 5V 1-Channel Relay Module Isolated By SMT Optocoupler High And Low Level Trigger Module Triggered By DC 5V
Amazon.com
10
$6.99
2Pcs DC 5V 1-Channel Relay Module Isolated By SMT Optocoupler High And Low Level Trigger Module Triggered By DC 5V
Amazon.com
10
$16.99
4 Channel 12V Relay Module With Optocoupler High Or Low Level Trigger Expansion Board(2PCS) (4 Channel 12V Relay, 4 Channel 12V Relay)
Amazon.com
79
$16.99
4 Channel 12V Relay Module With Optocoupler High Or Low Level Trigger Expansion Board(2PCS) (4 Channel 12V Relay, 4 Channel 12V Relay)
Amazon.com
79
$11.89
MECCANIXITY Relay Module 6 Channel 5V Low Level Trigger Module Blue Relay Module Board For DSP
Amazon.com
$11.89
MECCANIXITY Relay Module 6 Channel 5V Low Level Trigger Module Blue Relay Module Board For DSP
Amazon.com
$2.69
5V 12V 24V 2-Channel Relay Module Shield For Arduino ARM PIC AVR DSP Electronic 5V 10A 2 Channel Relay M (12V)
Amazon.com
$2.69
5V 12V 24V 2-Channel Relay Module Shield For Arduino ARM PIC AVR DSP Electronic 5V 10A 2 Channel Relay M (12V)
Amazon.com
$10.99
1 Channel Relay Shield Module, 10PCS DC 5V Indicator Light LED Module For Arduino R3 MEGA 2560 1280 ARM PIC AVR STM32 Raspberry Pi MCU DSP Official
Amazon.com
23
$10.99
1 Channel Relay Shield Module, 10PCS DC 5V Indicator Light LED Module For Arduino R3 MEGA 2560 1280 ARM PIC AVR STM32 Raspberry Pi MCU DSP Official
Amazon.com
23
$9.99
2 Channel Relay Module - Progressive Automations
Progressive Automations
$9.99
2 Channel Relay Module - Progressive Automations
Progressive Automations
$15.09
4 Channel Relay Module DC 12V 30A Relay Module With Optocoupler Isolation
Amazon.com
$15.09
4 Channel Relay Module DC 12V 30A Relay Module With Optocoupler Isolation
Amazon.com
$21.29
Relay Module 16 Channel With Optocoupler Power Supply High Level Trigger (5V)
Amazon.com
$21.29
Relay Module 16 Channel With Optocoupler Power Supply High Level Trigger (5V)
Amazon.com
$33.69
16 Channel Relay Module Smart Home Board With WROOM-32E, DC5-12V Power Supply 16 Channel Relay Switch And BLE Module For IDE Compilation
Amazon.com
$33.69
16 Channel Relay Module Smart Home Board With WROOM-32E, DC5-12V Power Supply 16 Channel Relay Switch And BLE Module For IDE Compilation
Amazon.com
$9.50
Single-Channel Relay Module For Raspberry Pi Zero/2B/3B/4B, STM32, ESP32, Arduino - 3.3V/5V Relay Expansion Board With Optocoupler Isolation & LED
Amazon.com
5
$9.50
Single-Channel Relay Module For Raspberry Pi Zero/2B/3B/4B, STM32, ESP32, Arduino - 3.3V/5V Relay Expansion Board With Optocoupler Isolation & LED
Amazon.com
5
$6.97
JESSINIE 5V 30A Relay Module, 1 Channel, Optocoupler Isolation, High/Low Trigger For Automation Control
Amazon.com
$6.97
JESSINIE 5V 30A Relay Module, 1 Channel, Optocoupler Isolation, High/Low Trigger For Automation Control
Amazon.com
$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
$40.00
Simplex 4090-9002 Individual Addressable Relay Module
Amazon.com
Free shipping
$40.00
Simplex 4090-9002 Individual Addressable Relay Module
Amazon.com
Free shipping
$15.99
ANMBEST Relay Module With Optocoupler High/Low Level Trigger For Arduino (12, 12V Relay 16 Channel)
Amazon.com
347
$15.99
ANMBEST Relay Module With Optocoupler High/Low Level Trigger For Arduino (12, 12V Relay 16 Channel)
Amazon.com
347
Top 5 important difference between contactor and relay
2:11
electricalclassroom.com
Top 5 important difference between contactor and relay
Contactors and relays are two closely related and have same working principle. Difference between contactor and relay is well explained in this article.
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购买 Relay Module vs Relay

广告
关于我们的广告
$15.99
Dafurui 5V Relay Module8pack 1 Channel Relay Module 5V Relays Board With Optocoupler Support High/Low Level Trigger For Arduino Relays
Amazon.com
75
$15.99
Dafurui 5V Relay Module8pack 1 Channel Relay Module 5V Relays Board With Optocoupler Support High/Low Level Trigger For Arduino Relays
Amazon.com
75
$15.99
8 Channel Relay Module - Progressive Automations
Progressive Automations
$15.99
8 Channel Relay Module - Progressive Automations
Progressive Automations
$6.99
2Pcs DC 5V 1-Channel Relay Module Isolated By SMT Optocoupler High And Low Level Trigger Module Triggered By DC 5V
Amazon.com
10
$6.99
2Pcs DC 5V 1-Channel Relay Module Isolated By SMT Optocoupler High And Low Level Trigger Module Triggered By DC 5V
Amazon.com
10
$16.99
4 Channel 12V Relay Module With Optocoupler High Or Low Level Trigger Expansion Board(2PCS) (4 Channel 12V Relay, 4 Channel 12V Relay)
Amazon.com
79
$16.99
4 Channel 12V Relay Module With Optocoupler High Or Low Level Trigger Expansion Board(2PCS) (4 Channel 12V Relay, 4 Channel 12V Relay)
Amazon.com
79
$11.89
MECCANIXITY Relay Module 6 Channel 5V Low Level Trigger Module Blue Relay Module Board For DSP
Amazon.com
$11.89
MECCANIXITY Relay Module 6 Channel 5V Low Level Trigger Module Blue Relay Module Board For DSP
Amazon.com
$2.69
5V 12V 24V 2-Channel Relay Module Shield For Arduino ARM PIC AVR DSP Electronic 5V 10A 2 Channel Relay M (12V)
Amazon.com
$2.69
5V 12V 24V 2-Channel Relay Module Shield For Arduino ARM PIC AVR DSP Electronic 5V 10A 2 Channel Relay M (12V)
Amazon.com
$10.99
1 Channel Relay Shield Module, 10PCS DC 5V Indicator Light LED Module For Arduino R3 MEGA 2560 1280 ARM PIC AVR STM32 Raspberry Pi MCU DSP Official
Amazon.com
23
$10.99
1 Channel Relay Shield Module, 10PCS DC 5V Indicator Light LED Module For Arduino R3 MEGA 2560 1280 ARM PIC AVR STM32 Raspberry Pi MCU DSP Official
Amazon.com
23
$9.99
2 Channel Relay Module - Progressive Automations
Progressive Automations
$9.99
2 Channel Relay Module - Progressive Automations
Progressive Automations
$15.09
4 Channel Relay Module DC 12V 30A Relay Module With Optocoupler Isolation
Amazon.com
$15.09
4 Channel Relay Module DC 12V 30A Relay Module With Optocoupler Isolation
Amazon.com
$21.29
Relay Module 16 Channel With Optocoupler Power Supply High Level Trigger (5V)
Amazon.com
$21.29
Relay Module 16 Channel With Optocoupler Power Supply High Level Trigger (5V)
Amazon.com
$33.69
16 Channel Relay Module Smart Home Board With WROOM-32E, DC5-12V Power Supply 16 Channel Relay Switch And BLE Module For IDE Compilation
Amazon.com
$33.69
16 Channel Relay Module Smart Home Board With WROOM-32E, DC5-12V Power Supply 16 Channel Relay Switch And BLE Module For IDE Compilation
Amazon.com
$9.50
Single-Channel Relay Module For Raspberry Pi Zero/2B/3B/4B, STM32, ESP32, Arduino - 3.3V/5V Relay Expansion Board With Optocoupler Isolation & LED
Amazon.com
5
$9.50
Single-Channel Relay Module For Raspberry Pi Zero/2B/3B/4B, STM32, ESP32, Arduino - 3.3V/5V Relay Expansion Board With Optocoupler Isolation & LED
Amazon.com
5
$6.97
JESSINIE 5V 30A Relay Module, 1 Channel, Optocoupler Isolation, High/Low Trigger For Automation Control
Amazon.com
$6.97
JESSINIE 5V 30A Relay Module, 1 Channel, Optocoupler Isolation, High/Low Trigger For Automation Control
Amazon.com
$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
$40.00
Simplex 4090-9002 Individual Addressable Relay Module
Amazon.com
Free shipping
$40.00
Simplex 4090-9002 Individual Addressable Relay Module
Amazon.com
Free shipping
$15.99
ANMBEST Relay Module With Optocoupler High/Low Level Trigger For Arduino (12, 12V Relay 16 Channel)
Amazon.com
347
$15.99
ANMBEST Relay Module With Optocoupler High/Low Level Trigger For Arduino (12, 12V Relay 16 Channel)
Amazon.com
347