7-24V Modbus RTU 4 Channel RS232 Serial Relay Module 5mm to 5mm Flexible Couplings This feature is ideal for

This feature is ideal for batch testing and long-term battery monitoring

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7-24V Modbus RTU 4 Channel RS232 Serial Relay Module 5mm to 5mm Flexible Couplings This feature is ideal for7 24V Modbus RTU 4 Channel RS232 Serial Relay Module The 7 24V Modbus RTU 4 Channel RS232 Serial Relay Module is an industrial grade control interface that enables remote switching of high power loads through serial communication protocols. Industrial automation engineers, SCADA system integrators, and IoT developers use this module to establish reliable communication between host controllers and external relay circuits without requiring direct GPIO