The I-87055W module offers 8 non-isolated Digital Input channels and 8 nonisolated Digital Output channels. All Digital Input channels are also able to be used as 16-bit counters. The I-87055W supports sink-type Digital Output and Digital Input with dry contact connections. The I-87055W includes 16 LED indicators that can be used to monitor the status of the Digital Input and Digital Output channels, and options are available for confi guring both poweron and safe values. 4 kV ESD protection is provided for the Digital Input and Digital Output channels as standard.