{"product_id":"modbus-rtu-32-channel-relay-module","title":"Modbus RTU 32-Channel Relay Module","description":"\u003cp\u003eThis 32-channel Relay Module has an RS485 bus system and uses the Modbus RTU protocol for fast and secure communications. It is equipped with a power supply isolation, magnetical isolation, resettable fuse, and TVS diode, providing safety and durability.\u003c\/p\u003e \u003cp\u003eIt has a configurable device address range from 1 to 255, allowing multiple devices to be cascaded on a single RS485 bus for streamlined integration. The flash-on and flash-off function provides temporal relay activation, giving automatic control with precision.\u003c\/p\u003e \u003cp\u003eSupporting a wide input voltage range from 7 to 36V, the module includes a voltage regulator chip for consistent performance without the need for an additional power supply for the isolation terminal. Its unibody design combines power supply and magnetical isolation, fostering signal integrity, minimal interference, and low power consumption.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNote\u003c\/strong\u003e: The power supply adapter is \u003cstrong\u003eNOT\u003c\/strong\u003e included. You can get one \u003ca href=\"\/nl\/products\/12v-2a-power-supply-with-2-1mm-barrel-jack\"\u003ehere\u003c\/a\u003e\u003c\/p\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eConfigurable device address (1~255), multi-devices can be cascaded on RS485 bus\u003c\/li\u003e \u003cli\u003eFeatures flash-on, and flash-off functions, it is possible to turn on the relay for a while and then close it automatically via the command\u003c\/li\u003e \u003cli\u003eVoltage regulator chip, supports 7~36V wide voltage power supply\u003c\/li\u003e \u003cli\u003eUnibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal\u003c\/li\u003e \u003cli\u003eUnibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption\u003c\/li\u003e \u003cli\u003eResettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provide over-current\/over-voltage proof, lightning proof \u0026amp; anti-electrostatic\u003c\/li\u003e \u003cli\u003eOptocoupler isolation, prevent the relay from being interfered with by high-voltage circuit\u003c\/li\u003e \u003cli\u003eDedicated relay driver chip, with built-in freewheeling diode protection, the driving ability is stronger and more stable\u003c\/li\u003e \u003cli\u003eReverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection\u003c\/li\u003e \u003cli\u003eHigh-quality relay, contact rating: ≤10A 250VAC\/30VDC\u003c\/li\u003e \u003cli\u003eRail-mounted ABS case, easy to install, safe to use\u003c\/li\u003e \u003cli\u003e3 LEDs for indicating the MCU status and signal transceiving status\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eSpecifications\u003c\/h2\u003e \u003ctable width=\"756\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd width=\"290\"\u003eOperating Voltage\u003c\/td\u003e \u003ctd width=\"466\"\u003e7~36V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCommunication Interface\u003c\/td\u003e \u003ctd\u003eRS485\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBaudrate\u003c\/td\u003e \u003ctd\u003e4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDefault Communication Format\u003c\/td\u003e \u003ctd\u003e9600, N, 8, 1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRelay Channels\u003c\/td\u003e \u003ctd\u003e32\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eContact Form\u003c\/td\u003e \u003ctd\u003e1NO 1NC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eContact Rating\u003c\/td\u003e \u003ctd\u003e≤10A 250VAC\/30VDC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCommunication Protocol\u003c\/td\u003e \u003ctd\u003eStandard Modbus RTU protocol\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRS485 Address\u003c\/td\u003e \u003ctd\u003e1~255\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd rowspan=\"3\"\u003eLED Indicators\u003c\/td\u003e \u003ctd\u003eSTA: MCU indicator, keep flashing when the MCU normally working\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eTXD: TX indicator, lights up when sending data\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRXD: RX indicator, lights up when receiving data\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eConnection Example - AC 220V \u0026amp; DC 30V\u003c\/h2\u003e \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/Modbus_RTU_32-Ch_Relay_Module_features_1.jpg?v=1715691021\" alt=\"\"\u003e\u003c\/p\u003e \u003ch2\u003eResources\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.waveshare.com\/wiki\/Modbus_RTU_Relay_32CH\"\u003eProduct Wiki\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003ePackage Contents\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1x Modbus RTU 32-Channel Relay Module\u003c\/li\u003e \u003c\/ul\u003e","brand":"Waveshare","offers":[{"title":"Default Title","offer_id":50847374311697,"sku":"WAV-25140","price":59.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/modbus-rtu-32-channel-relay-module-waveshare-wav-25140-42186582753475.jpg?v=1735211900","url":"https:\/\/abcd3032.myshopify.com\/nl\/products\/modbus-rtu-32-channel-relay-module","provider":"Tayyab Zak","version":"1.0","type":"link"}