4 Channel Relays Module for PLC Automation Equipment Control Load DC30V AC250V 30A High Low Level Triggers Relays Board

4Channel Relays with Optocoupler Isolation High Low Level Triggers Relays Board for Industrial Control Load DC30V AC250V

5V/12V/24V 4 Channel Relays Module Optocoupler Isolation High Low Level Triggers for PLC Automation Equipment Control

Relay Module 4 Channel Circuit Automatic Control High Low Level Trigger Electronic Component5V

Relay Module 4 Channel 30A High Low Level Current Relay Module with Isolation Optocoupleur12V

5V 12V 4 Channel Relay Module Shield for Arduino ARM PIC AVR DSP Electronic with Optocoupler Relay Output 4 Way Relay

5V 12V 4 Channel Relay Board with Optocoupler Relay 4 Way Relay Module AVR 51 PIC 4 Way Relay Module Shield for Arduino

5v 4 Way Relay Module for Arduino 4 Channel Relay Module with Optocoupler Relay Output for Arduino 4CH

4 Channel Optocoupler Relay Module Board High & Low Trigger 5V12V24V(12V)

4-Channel Bistable Self-Locking Relay Module Button MCU Low-Level Control 5V Accuracy Low Level Relay Module Relay Module

4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM

4 Channel Bistable Self Locking Relay Module Button MCU Low Level Control Switch 5V Accuracy

Relay Shield Module, 4 Channel 5V Module with Optocoupler for Control

5V 4-Channel Relay Module with Optocoupler Isolation, Supports High and Low Level Trigger, Compatible with Arduino and Raspberry Pi for DIY

4-Channel 5V Relay Module | Compatible with UNO R3, Mega 1280, DSP ARM, PIC AVR, Raspberry Pi | Status LEDs | High Power Control

AC 100 250V 30A 4 Channel Relay High Low Level Trigger Module

4 Channel DC 12V 30A Relay Module Control Board Optocoupler Isolation High Low Trigger

AC 100250V 30A 4 Channel Relay High Low Level Trigger Module

1 Channel 4CH DC 5V/12V Infrared Remote Control Relay Module IR Remote Switch Control Receiver Driver Board

3 Channel Relay Module with Optocoupler for Arduino Compatible with 3V and 5V Control Signals High Load Capacity

Relay Module 4 Channel Control Board Switch Controller DC 12V Accessory for Electronics