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NOYITO 1 Channel Relay Module with Isolated Optocoupler 5V 12V 24V High Low Level Trigger Module Triggered (Pack of 3) (5V, Red): Amazon.com: Industrial & Scientific
Amazon.com: HiLetgo 4 Channel 24V Relay Module with OPTO-Isolated Support High and Low Level Trigger for PLC Automation Equipment Control : Industrial & Scientific
Amazon.com: Kigauru Relay 10Pcs 10A General Purpose Relay LY2NJ with LED lamp 8 pins dpdt Relais 12v 24v 36v 110v 220v 380v (Size : DC 12V) : Industrial & Scientific
Amazon.com: Kigauru Relay 10Pcs 10A General Purpose Relay LY2NJ with LED lamp 8 pins dpdt Relais 12v 24v 36v 110v 220v 380v (Size : DC 12V) : Industrial & Scientific
Tablero de relais, Keenso Módulo de relé de 4 canales con optoacoplador Tarjeta de expansión de disparo de bajo nivel para Arduino 5V / 12V / 24V( 24V) : Amazon.es: Industria, empresas y ciencia
Amazon.com: DIN Rail Mount AC/DC 5V 12V 24V SPST-NO 5Amp Power Relay Module (AC/DC 5V, 16 Channels) : Industrial & Scientific
Amazon.com: HIFASI Relay 1PCS LED MY4 General Purpose Relay 4pdt,14pins Relais AC 12V 24V 36V 48V 110V 220V 380V MY4NJ Relay Switch (Size : AC 12V) : Industrial & Scientific