Waveshare Modbus RTU Protocol Rail-Mounted Case 8-Way RS485 30A High-Current Relay Module(30459)Features: 1. Support setting device address (1 255) to cascade multiple devices through RS485 bus 2. With flash on and flash off functions, the relay can be controlled by command to automatically close after being turned on for a period of time 3. Onboard voltage regulator chip, direct plug in 7V 36V wide voltage power supply 4. Onboard integrated power isolation, which can provide stable isolation voltage, and no additional power supply is required
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