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Rs485 Relay Switch

I 10 migliori prodotti di giugno 2025
Ultimo aggiornamento: 18 giugno 2025
Waveshare
Waveshare
Waveshare Industrial Modbus RTU 8-Ch Relay Module (D) With Digital Input And RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply
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85

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#5

  • Configurable device address (1~255), multi devices can be cascaded on RS485 bus. Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically
  • Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal. Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
  • Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic. Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
  • Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability. Supports passive and active digital input, with bi-directional optocoupler isolation, built in debouncing algorithm. The relay supports digital input linkage control or toggle control
  • Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection. High quality relay, contact rating: ≤10A 250VAC/30VDC. Rail-mounted ABS plastic enclosure, easy to install, safe to use. Multiple LEDs for indicating the MCU status and signal transceiving status
  • 52,99 € SU AMAZON
Waveshare
Waveshare
Waveshare Industrial Modbus RTU 4-Ch Relay Module With RS485 Interface, 30A High Current, Onboard LED Indicators, Multi Isolation Protection Circuits, Industrial Grade Rail-Mount Case
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79

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#7

  • An industrial 4-ch relay module controlled via RS485 bus, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation, ADI magnetical isolation, resettable fuse, and TVS diode, etc. It also comes with an ABS enclosure. The Modbus RTU Relay 4CH is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and/or applications with high communication requirement.
  • Configurable device address (1~255), multi devices can be cascaded on RS485 bus. Features flash-on, flash-off function, by passing arguments to the command, it is possible to turn on the relay for a while and then close it automatically
  • Onboard voltage regulator, supports 7V~36V wide voltage supply. Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal. Onboard unibody ADI magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
  • Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic. Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
  • Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability. Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection. High quality relay, contact rating: ≤30A 250V AC or ≤30A 28V DC. Rail-mounted ABS plastic enclosure, easy to install, safe to use. 3 LEDs for indicating the MCU status and signal transceiving status
  • 48,99 € SU AMAZON
HOHOVYVY
HOHOVYVY
HOHOVYVY Sensore di pioggia, pioggia e neve, trasmettitore meteo stazione di rilevamento meteo RS485 (relay Switch)
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#9

  • Sensibilità del sensore regolabile: la sensibilità del sensore del sensore di pioggia e neve può essere regolata, consentendo flessibilità di utilizzo e frequenti allarmi in loco grazie all'allarme e al ritardo di reset.
  • Misurazione dell'impedenza CA: il trasmettitore di pioggia e neve utilizza una misurazione dell'impedenza AC per rilevare con precisione le condizioni di pioggia e neve in diversi ambienti. Ciò garantisce una lunga durata degli elettrodi ed elimina i problemi di ossidazione.
  • Ampia applicazione: adatto per misurare pioggia e neve in serre, allevamenti, cantieri, edifici e altri ambienti. Il sensore ha una frequenza di falso allarme quasi trascurabile e offre un rilevamento affidabile e accurato.
  • Protezione IP65: il trasmettitore per pioggia e neve è stato progettato con protezione IP65 ed è resistente alla polvere e all'acqua. Può essere facilmente installato all'aperto e può resistere a condizioni climatiche avverse, garantendo durata e durata.
  • Facile installazione e integrazione: il trasmettitore di rilevamento pioggia e neve è e può essere integrato senza problemi nei sistemi esistenti. Grazie alla sua uscita RS485, può essere collegato a dispositivi compatibili per il monitoraggio e il controllo in tempo reale, garantendo comodità ed efficienza.
  • 24,21 € SU AMAZON
Waveshare
Waveshare
Waveshare Modbus RTU 8-Ch Latching Relay Module (C) With RS485 Interface, Multi Isolation Protection Circuits, Rail-Mounted Case
Spedizione gratuita
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70

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#10

  • An industrial 8-ch latching relay module controlled via RS485 bus, which can keep the relay state unchanged after power loss. It adopts Modbus RTU protocol, featuring embedded protection circuits such as power isolation, magnetical isolation, and TVS diode, etc. It also comes with an ABS enclosure. Easy to use. Due to its fast communication, stability, reliability, and safety, it is ideal for industrial control equipments and applications with high communication requirement.
  • Adopts latching relay, the state of the relay can remain unchanged after power loss. Configurable device address (1~255), multi devices can be cascaded on RS485 bus. Features flash-on, flash-off function, by passing arguments to the command, it is possible to turn on the relay for a while and then close it automatically
  • Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal. Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption. Adopts dedicated latching relay driver chip for stronger and more stable driving ability
  • Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
  • Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection. High quality relay, contact rating: ≤10A 250VAC/30VDC. Rail-mounted ABS plastic enclosure, easy to install, safe to use. 3 LEDs for indicating the MCU status and signal transceiving status
  • 54,99 € SU AMAZON