Spectra presents the Unitronics Unistream device series. A Unistream system consists of three components: a display unit with a high-resolution 7-inch or 10-inch touch color display, a CPU module and I/O modules. These modules are flange-mounted to the display unit using a snap lock. Additional I/O modules with analog and digital inputs can be connected via CANbus. A CPU unit supports up to 2048 channels. I/O modules from other manufacturers can be connected in a larger installation via Ethernet, CANbus and RS232/485. Modbus and CANopen protocols are supported. Thanks to an integrated audio unit, alarm signals or other messages can be played back via the internal or external loudspeakers.