Connects to a PC or Laptop using our USB Cable or to any other host which incorporates an RS-232 serial port. Stack multiple cards together on the same port. Provides 14 distinct I/O channels, each of which can be configured by the user for either input or output at TTL levels. Easy to use command set minimizes learning curve but preserves a robust, feature rich, functional environment. Ideal for quick set-up and run applications. Note, each channel is limited to 0-5 volt TTL level signals with no over-voltage protection. Use our WTX4, WTDIN, or WTDOT series if protection is required or higher voltages are being sensed or switched.