product image

Model 242 DC Isolator

DC Isolator

The Model 242 is designed to meet and exceed the specifications in Chapter 5, section 4, of the Caltrans Transportation Electrical Equipment specifications (TEES) dated 08/16/02. Section 4 specifies the requirements for a two channel DC isolator to provide isolation between a VDC input circuit (external electrical switch closure) and the controller unit input. The Reno A&E Model 242 is optically isolated from the input using an Optoisolator. Each isolated channel is equipped with a test switch that allows for a simulation of a valid input signal. Each channel has two light-emitting diodes (LED): a red LED (OUT) that indicates a call and a red LED (FAULT) that indicates fault status.