Conspec's Accessors are the communication links between all field devices and the Central Processing Unit. This communication is made in response to one of several commands, but is entirely automatic. Each Accessor can be uniquely addressed, eliminating the possibility of an information mix-up. In addition to analog values or binary status information, the Accessor also transmits information identifying itself to the Central Processing Unit to facilitate information processing and to protect against errors introduced on the Accessor trunk due to high electromagnetic interference.

The B25 Accessor provides five independently commendable output controls. A 100 mA provides each output control. Each transistor outputs state is independently controllable by the central processor. The B25 is ideal for controlling status lights, small relays, and other logic devices. The B25 does not have external proof of operation but monitors the status only of each output transistor.

The B25 is normally used with a B25 Slave Relay Package, which provides 5 NO/NC ½ Amp AC contact outputs.