The ST-72 controller provides simultaneous display and alarm function for up to 64 channels and I/O arranged in groups of 16 channels. The device is easy to configure and user friendly, ideal for centralizing display and alarm functions in critical multipoint monitoring applications. The ST-72 controller usessimple menu-driven setup, is wireless capable, and displays data on its color LCD. The unit has four RS-485 serial ports for simultaneous Modbus master/slave operations and multiple masters. The ST-72 has five standard SPDT alarm relays and four independent alarm levels per channel.