The tM series is a family of tiny network data acquisition and control modules that provide digital I/O functions like photo-isolated digital input, relay contact, photoMOS relay, and open-collector output.  The modules can be controlled remotely through an RS-485 serial bus by with DCON and Modbus RTU protocols. The transmission speed of the RS-485 port is selectable up to 115,200 bps. The tM series integrate perfectly with HMI, SCADA, PLC’s and other software systems.  The tM series provides dual watchdog: module watchdog and host watchdog so the module will automatically reset the microprocessor when the module hangs and the output of the module can go to predefined safe value state when the host fails.  The tM series is offered in an amazing tiny form-factor and can be easily installed in anywhere, even directly embedded into a machine. It is equipped with two removable terminal block connectors for easy wiring.