SPNIS21S+ ABB
SPNIS21S+ ABB Product overview The SPNIS21S+is a 21-channel digital input/output module manufactured by ABB for Advant OCS and Compact Product Suite control systems.It can receive digital signals from various devices,such as sensors,switches,and buttons,and can also output digital signals to various devices,such as relays,indicators,and drivers. Product parameter Number of channels:21 Input/Output type:digital Input voltage:24 V DC…