【Six Working Modes】: The relay module includes six working modes: open, close, micro-motion, self-locking, interlocking and delay.
【Two Command Control Modes】: The relay module includes AT command and MODBUS command control modes. Under the MODBUS command mode, it can support up to 32 devices in parallel.
【Maximum Delay Time】: Under the AT command, the maximum delay is 9999 seconds; under the MODBUS command, the maximum delay is 255 seconds.
【Command Input】: AT command can be input through serial hyper terminal (serial assistant); MODBUS command can be input through serial hyper terminal (serial assistant) or "Modbus polling" to input MODBUS command.
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