The 70G-IAC24 is a G5-series AC input module manufactured by Grayhill that converts AC input signals to logic-level outputs with optical isolation and integrated status LED indication. It features a nominal input voltage of 120 Vac with an input voltage range of 90–140 Vac, a nominal logic voltage (Vcc) of 24 VDC with a logic voltage range of 17–30 VDC, and a maximum logic supply current of 10 mA. The module provides an output current range of 1–50 mA, a minimum output breakdown voltage of 50 Vdc, and isolation voltage of 4000 Vrms, with maximum turn-on and turn-off times of 20 mS each. It meets IEEE 472 transient protection requirements, holds UL, CSA, CE, and TÜV certifications, and operates reliably over a temperature range of -40°C to +100°C. The 70G-IAC24 is ideal for industrial automation, control systems, and safety-critical applications requiring galvanic isolation and visual status feedback.