G4 I/O includes both digital and analog modules. Each G4 module offers high-density single-channel packaging. Each digital module includes an LED status indicator and is also available with manual switching for field wiring and control logic testing. Digital modules support 5, 15, or 24-volt logic. G4 digital output modules feature a top-mounted replaceable fuse. G4 analog modules are factory-calibrated, offer 12-bit resolution, and requires a single 24-volt power supply. All current loop modules include an isolated loop power supply for added flexibility and reduced instrumentation costs. Input types include voltage, current, thermocouple, RTD, ICTD, frequency, and velocity. Outputs include voltage, current, and time-proportional output. Factory Mutual (FM) approved versions of many G4 I/O modules are available. Please inquire for details on specific models.