4 Channel Relay Modules
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4 Channel 5V Relay Module Shield control board with optocoupler Low Level on E-Bay starting at $4.26
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ESP8266 WIFI 4 Channels Relay Module AC/DC ESP-12F Development Board on E-Bay starting at $8.99
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1PCS ESP8266 WIFI 4 Channels Relay Module AC/DC ESP-12F Development Board on E-Bay starting at $8.99
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12V 4CH Switch Remote Control Relay Switch Radio 24V 4Channel Transceiver Module on E-Bay starting at $17.17
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8 Channel Analog Digital IO Module RS485 Modbus Rtu Protocol ADC DAC N4DBA06 on E-Bay starting at $19.51
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1/2/4Channel Bluetooth Relay Module APP Control Switch IoT Smart Home 5V/12V on E-Bay starting at $5.41
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ESP8266 WIFI 2/4 Channels Relay Module ESP-12F Development Board DC7-30V/5V on E-Bay starting at $5.93
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DC7-32V 2/4 Channel Smart Switch WiFi Wireless Relay Module Home Remote Control on E-Bay starting at $8.75
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DC5-32V 4 Channel WiFi Wireless Delay Relay Switch APP Remote Control Module on E-Bay starting at $11.71
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5V 1/2/4/6/8 Channel Relay Module Board Optocoupler LED For Arduino ARM AVR on E-Bay starting at $1.15
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5V 1/2/4/8 Channel Relay Board Module for Arduino Raspberry Pi ARM AVR DSP PIC on E-Bay starting at $3.85
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Control 4 8-Channel Relay Module C4–DIN-8REL-E-V2 on E-Bay starting at $349.99
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1-channel 2-channel 4-channel Relay Module 3V 3.3V Low Level Trigger Relay US on E-Bay starting at $7.99
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1PC Four channel Relay Shield 5V 4 Channel Relay Shield Module Fits For Arduino` on E-Bay starting at $9.28
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4-Channel DC 12V 30A Relay Module Control Board Optocoupler Isolation Trigger on E-Bay starting at $13.99
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1/2/4/6/8 Channel 5V Relay Board Module Optocoupler LED for Arduino PiC ARM AVR on E-Bay starting at $0.99
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1/2/4Channel Bluetooth Relay Module DC 12V APP Control Switch IoT Smart Home New on E-Bay starting at $4.99
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4 Channel Relay MT8870 DTMF Tone Signal Decoder Remote Control Relay Module on E-Bay starting at $17.38
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Relay Module 4 Channel 30A High Low Current with Isolation Optocoupler on E-Bay starting at $18.74
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5V SSR G3MB-202P Solid State Relay Module 1/2/4/8 Channel For Arduino on E-Bay starting at $1.09
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12V 1/2/4/8/16 Channel Relay Module With optocoupler For PIC AVR DSP ARM Arduino on E-Bay starting at $3.99
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1/2/4CH Smart WiFi Switch Relay Module Wireless Remote DC 7-32V/AC85-250V 433MHZ on E-Bay starting at $8.26
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7-24V Modbus Rtu 1/2/4 Channel Relay Module Switch input output RS485/TTL UART on E-Bay starting at $10.68
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Smart Remote Control Wireless WiFi Switch Relay Module 1/2/4CH DC7~32V/AC85~250V on E-Bay starting at $8.39
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For High Low Level Trigger 5V/9V/12V/24V 1/2/4 Channel Optocoupler Relay Module on E-Bay starting at $3.03
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ESP8266 Wireless WIFI Relay Module 1/2/4/8/16 Channel ESP-12F AC/DC 5V-80V on E-Bay starting at $15.52
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1/2/4/8 Arduino Pi Channel Relay Board Module Selectable High Low 5V 12V 24V on E-Bay starting at $8.85
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1/2/4 Channel 5v SSR G3MB-202P Solid State Relay Module For Arduino on E-Bay starting at $2.75
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1/4/8 CH 5V/12V/24V High/Low Level Trigger AC Solid State Relay Module AC240V2A on E-Bay starting at $12.89
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1/4/8 CH 5V/12V/24V High/Low Level Trigger AC Solid State Relay Module AC240V2A on E-Bay starting at $22.00
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ESP8266 ESP-01 5V/12V 2/4-Channel WiFi Relay Module For IOT Smart Home APP on E-Bay starting at $8.95
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5V 1/2/4/8 Channel Relay Board Module for Arduino Raspberry Pi ARM AVR DSP PIC on E-Bay starting at $10.94
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1 Channel 5-30V MICRO USB 5V 2/4/8 Channel USB Control Relay Module Delay Relay on E-Bay starting at $1.31
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12V 1/2/4/8/16 Channel Relay Module With optocoupler For PIC AVR DSP ARM Arduino on E-Bay starting at $2.16
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DC 7-32V 2/4 Channel Smart Switch WiFi Wireless Relay Module Home Remote Control on E-Bay starting at $8.68
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1-10PCS 4 Channel 3V 3.3V Relay Module for Arduino Raspberry PIC AVR DSP ARM on E-Bay starting at $5.15
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1/2/4CH DC7-32V/AC85-250V Smart Remote Control Wireless WiFi Switch Relay Module on E-Bay starting at $15.19
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5V 12V 1-4CH Flip-Flop Bistable Self-locking Relay Module Trigger Switch Board on E-Bay starting at $7.99
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1/2/4 Channel 5v OMRON SSR G3MB-202P Solid State Relay Module For Arduino on E-Bay starting at $1.09
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Smart Remote Control Wireless WiFi Switch Relay Module 1/2/4CH DC7-32V/AC85-250V on E-Bay starting at $7.91
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1pcs 1 2 4 8 Channel 5V 12V 24V Relay Module Board High and Low Level Trigger on E-Bay starting at $6.33
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1pcs 1 2 4 8 Channel 5V 12V 24V Relay Module Board High and Low Level Trigger on E-Bay starting at $9.52
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12V 1-2-4-8 Channel Relay High Low Level Trigger Optocoupler Module Arduino PI on E-Bay starting at $5.53
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5V 12V 24V 30A 4 Channel Relay Module Board High And Low Level Relay Module on E-Bay starting at $11.08
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5V 1/2/4/6/8/16 Channel Relay Module Optocoupler Board LED for Arduino ARM AVR on E-Bay starting at $2.99
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5V 1/2/4/6/8/16 Channel Relay Module Optocoupler Board LED for Arduino ARM AVR on E-Bay starting at $3.59
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12V Relay Module With optocoupler for PIC AVR DSP ARM Arduino 1/2/4/8/16 Channel on E-Bay starting at $5.99
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1/2/4/8 Channel Relay Board Relay Module w/Optocoupler High Low 5V 9V 12V 24V US on E-Bay starting at $11.29
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12V 1/2/4/8/16 Channel Relay Module With optocoupler For AVR DSP ARM Arduino PIC on E-Bay starting at $11.87
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WIFI TASMOTA 4 Channel 10 Amps Relay Module ESP8266 Smart Home Alexa Google on E-Bay starting at $22.95
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