Features 【Multifunctional MODBUS Control】 Our 16-channel relay module is designed to support up to 64 devices in parallel in MODBUS command mode. You can easily control and communicate with the device using MODBUS commands via Serial HyperTerminal or "Modbus Poll". 【High Efficiency】DC12V relay module provides excellent power management capabilities. The standby current is only 11MA, ensuring energy efficiency when all relays are closed. The current draw gradually increases as more relays are turned on, with values ​​ranging from 40MA for 1 relay to 222MA for 8 relays. 【Multiple Command Options】RS485 relay module provides six different command modes - "open", "closed", "instantaneous", "self-locking", "interlock" and "delay". These diverse command options are tailored to your specific requirements, allowing you to seamlessly customize the operation of your device. 【MODBUS RTU Communication】Based on the MODBUS RTU command control mode, our PLC Controller relay module ensures reliable and efficient operation, supporting a maximum delay of 255 seconds, ensuring that your connected equipment executes commands accurately and timely. 【Enhanced PLC Control】Equipped with a high-quality PLC controller and convenient serial port switch, this relay module enables seamless control of your PLC motors and other electrical components. Its robust design and accurate command execution make it ideal for a variety of industrial applications. Specification:  Working Voltage: DC 12V  Standby Current: 11MA  Max Load: 10A/250VAC, 10A/125VAC, 10A/30VDC, 10A/28VDC, 10A/12VDC  Size: 17*6.5*2cm / 6.7*2.5*0.8in  Weight: 224g/7.9oz Typical applications: MODBUS command mode (HEX), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically add the CRC), PLC or MCU process control. WIring DIagram:  1. DC 12V control circuit,Wiring diagram below. "LOAD" may be camera,LED lights, fans, motors and other DC 12V equipment. DC 1-100V or AC 85-265V control circuit,Wiring diagram below(Note:If not DC 12V load, need another DC 12V power supply). "LOAD" may be LED lights, fans, motors Lights, fluorescent lights, solar water heaters and other DC AC equipment.  Package list: 1 * 16 Channel RS485 Relay Package List