16 Channel MODBUS RTU Relay Board DC 12V RS485 PLC Controller with 6 Command Modes for Home Automation Industrial Control Systems

Features: 1. Working voltage is DC 12V. 2. Standby current (all relays closed) is 11MA, 1 relay open 40MA, 2relays open 67MA, 3 relays open 95MA, 4 relays open 121MA, 5 relays open 147MA,6 relays open 173MA, 7 relays open 198MA, 8 relays open 222MA... 3. 6 Commands: "Open", "close","Momentary", "Self-locking", "Interlock" and "Delay".4. MODBUS RTU command control mode, the maximum delay is 255 seconds. 5. MODBUS commands can be made serial HyperTerminal (serial assistant) or"Modbus Poll" enter. 6. Under the MODBUS command mode, this relay module can support up to64 devices in parallel. Specification: Working Voltage:DC 12V Standby Current:11MA Max Load:10A/250VAC, 10A/125VAC, 10A/30VDC, 10A/28VDC, 10A/12VDC Size:Approx. 17*6.5*2cm / 6.7*2.5*0.8in Weight:Approx. 224g/7.9oz Typical applications: MODBUScommand mode (HEX), you can control a variety of ways:Serial Hyper Terminal Control (need to manually add the CRC), Modbus Pollsoftware control (software automatically add the CRC), PLC or MCU processcontrol.WIring DIagram: 1. DC12V control circuit,Wiring diagram below. "LOAD" may be camera,LEDlights, fans, motors and other DC 12V equipment. 2. DC 1-100V or AC 85-265V control circuit,Wiring diagram below(Note:If not DC 12Vload, need another DC 12V power supply). "LOAD" may be LED lights,fans, motors Lights, fluorescent lights, solar water heaters and other DC ACequipment. Package list: 1 * 16Channel RS485 Relay

• [POWERFUL 16-CHANNEL CONTROL] Experience superior automation with our DC 12V relay module featuring 16 independent channels. With ultra-low 11MA standby current and precise incremental power management (40MA per active relay), this board delivers efficient performance for energy-sensitive applications.
• [ADVANCED COMMAND OPTIONS] Take complete control with 6 versatile command modes including Open/Close, Momentary, Self-locking, Interlock, and Delay functions. The sophisticated MODBUS RTU protocol supports delays up to 255 seconds for complex timing requirements in automation systems.
• [INDUSTRIAL-GRADE CONNECTIVITY] Seamlessly integrate with existing systems using standard MODBUS RTU protocol via serial port or Modbus Poll software. The automated CRC calculation ensures reliable for industrial PLCs, microcontrollers, and automation networks.
• [SCALABLE NETWORK SOLUTION] Expand your control capabilities with support for up to 64 parallel-connected devices. This scalable architecture makes it ideal for large automation projects requiring synchronized multi-point control in factories, smart buildings, and commercial installations.
• [HEAVY-DUTY PERFORMANCE] Engineered for demanding environments, each relay channel handles substantial 10A loads (250VAC/30VDC). The rugged 17x6.5x2cm design reliably controls various equipment including motors, lighting systems, HVAC components, and industrial machinery for comprehensive automation solutions.