The 5B08 and 5B08-MUX backplanes accept up to eight 5B Series input/output modules, providing direct screw terminal interfacing to sensors and transducers, as well as a 26-pin connector I/O interface to a measurement and control system. Model 5B08 backplane I/O signals are independently available, while Model 5B08-MUX I/O signals are controlled via an on-board multiplexer providing a bus for input signals and a separate bus for output signals. 5B Series modules can be mixed or matched and may be changed without disturbing field wiring. Each channel has a cold junction temperature sensor (Model AC1361) to accommodate thermocouple modules (5B37 or 5B47). Both backplanes require an external +5 V dc regulated power supply. Reverse power supply protection is provided as well as a replaceable 4-ampere fuse and a power ON green LED indicator. * 8 Channel Multiplexed Backplane * Includes CJC Sensors * 26 Pin Ribbon Cable System Interface * Mix and Match 5B Series I/O Module Capability