Optional 650mm long cable for Base Unit to Expansion Unit interconnection, which enables a two tier configuration.,The following Analogue and Temperature Modules (Combined Analogue Input & Output Module, Analogue Input Module, Analogue Output Module, Thermocouple Input Module, PT100 Input Module) have opto-isolation between analogue and digital circuitry, they also employ dc to dc converters to isolate the supply from the base unit or power supply. However, there is no isolation between analogue channels. Additional Modules for Mitsubishi FX1S, FX1N & FX2N PLC's Products in this range are for use with FX1S, FX1N and FX2N PLC, unless specified otherwise. All are DIN rail mount and are 90mm high and 87mm deep. The width varies and is tabled below. All of the following products, except the Extension Cable, attach directly to the right hand end of the previous unit, block or module using the short integral lead.