{"product_id":"8-channel-ethernet-relay-module-b-with-poe","title":"8 Channel PoE Ethernet Relay Module (B) with Digital Inputs","description":"\u003cp\u003eThis module has eight relay channels and eight digital inputs that support passive (dry contact) and active (wet contact), making it easy to manage multiple devices simultaneously. It uses the Modbus RTU\/Modbus TCP protocols, which allow integration with various systems.\u003c\/p\u003e\n\u003cp\u003eIt supports Power over Ethernet (PoE), making installation easy by combining power and data transmission into a single cable. For added benefit, it also supports a wide DC power input range of 7 to 36V. Placed in a sturdy ABS rail-mount case, it’s built for easy and secure mounting in industrial settings.\u003c\/p\u003e\n\u003cp\u003eWith its flash-on and flash-off function, you can precisely control relay timing, turning devices on for a specified duration before automatically switching them off. The module also supports relay control via the MQTT protocol, and it includes a demo for integration with Alibaba Cloud MQTT, providing cloud-based control options.\u003c\/p\u003e\n\u003cp\u003eThe onboard optocoupler isolation helps protect the module from interference caused by high-voltage circuits, providing stable and safe operation. This makes the module itself a solid choice for industrial environments that demand fast, stable, and secure communication.\u003c\/p\u003e\n\u003cp\u003eIf you are looking for a PoE ethernet relay module without digital inputs, \u003ca href=\"\/zh\/products\/8-channel-ethernet-relay-module\"\u003eclick here to find it in our store\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlash-on, and flash-off functions, by passing an argument to the command, it is possible to turn on the relay for a while and then close it automatically\u003c\/li\u003e\n\u003cli\u003eDC 7~36V wide range power input and PoE power supply\u003c\/li\u003e\n\u003cli\u003eRelay control through MQTT protocol, comes with Alibaba Cloud MQTT application demo\u003c\/li\u003e\n\u003cli\u003eOptocoupler isolation, prevents the relay from being interfered with by high-voltage circuit\u003c\/li\u003e\n\u003cli\u003eDedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability\u003c\/li\u003e\n\u003cli\u003ePassive and active digital input, with bi-directional optocoupler isolation, and a built-in debouncing algorithm. The relay supports digital input linkage control or toggle control\u003c\/li\u003e\n\u003cli\u003eReverse-proof circuit, prevents the circuit from being damaged accidentally by incorrect connection\u003c\/li\u003e\n\u003cli\u003eHigh-quality relay, contact rating: ≤10A 250VAC\/30VDC\u003c\/li\u003e\n\u003cli\u003eRail-mounted ABS plastic enclosure, easy to install, safe to use\u003c\/li\u003e\n\u003cli\u003e4 LEDs and Network indicators for indicating the MCU status and signal transceiving status\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eConnection Example - Passive (Dry Contact) and Active (Wet Contact) Digital Input\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/Ethernet_Relay_Module_with_digital_inputs_features_1.jpg?v=1723729592\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable width=\"816\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"209\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd width=\"607\"\u003ePoE Ethernet Port, DC 5.5*2.1 Power Port Or Power Supply Screw Terminal (7~36V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003ePoE Ethernet Port, Support IEEE 802.3af Standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Channels\u003c\/td\u003e\n\u003ctd\u003e8 Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTouch Contact\u003c\/td\u003e\n\u003ctd\u003e1NO, 1NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTouch Contact Load\u003c\/td\u003e\n\u003ctd\u003e≤10A 250V AC  Or  ≤10A 30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003eDigital Input\u003c\/td\u003e\n\u003ctd\u003e8DI, 5~36V, Passive Input\/Active Input (NPN or PNP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuilt-in Bidirectional Optocoupler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModbus Protocol\u003c\/td\u003e\n\u003ctd\u003eModbus RTU Protocol Or Modbus TCP Protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.waveshare.com\/wiki\/Modbus_POE_ETH_Relay_(B)\"\u003eProduct Wiki\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePinout\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/Ethernet_Relay_Module_with_digital_inputs_contents_1.jpg?v=1723729592\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ctable width=\"760\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"240\"\u003eRUN\u003c\/td\u003e\n\u003ctd width=\"520\"\u003eEthernet port indicator, blinking when the Ethernet port is normally working\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSTA\u003c\/td\u003e\n\u003ctd\u003eMCU indicator, blinking when the MCU is normally working\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTXD\u003c\/td\u003e\n\u003ctd\u003eTX indicator lights up when sending data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRXD\u003c\/td\u003e\n\u003ctd\u003eRX indicator lights up when receiving data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet port Green Indicator\u003c\/td\u003e\n\u003ctd\u003eLights up when the connection is established\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet Port Yellow Indicator\u003c\/td\u003e\n\u003ctd\u003eData activity indicator, blinking when transmitting data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x 8-channel Ethernet Relay Module (B)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Waveshare","offers":[{"title":"Default Title","offer_id":50847272010001,"sku":"WAV-27876","price":44.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/8-channel-poe-ethernet-relay-module-b-with-digital-inputs-waveshare-wav-27876-42908840657091.jpg?v=1735209637","url":"https:\/\/abcd3032.myshopify.com\/zh\/products\/8-channel-ethernet-relay-module-b-with-poe","provider":"Tayyab Zak","version":"1.0","type":"link"}