Automation Direct D3-16ND2-1 Discrete Input Module

Automation Direct D3-16ND2-1 is a 16‑point DirectLOGIC DL305 discrete input module that accepts 24 VDC sourcing signals and ships with a removable terminal block. It provides two internal common terminals and supports four inputs per common for straightforward wiring in DL305 systems. The module operates on a 18–36 VDC input range, with an input impedance of about 1.8 kΩ and a maximum input current of 20 mA per channel. The ON level is typically below 3 V, while the OFF level sits above 19 V, ensuring reliable detection of 24 VDC sensors. Weighing approximately 6.3 oz (180 g), the D3-16ND2-1 is designed for compact 16‑channel expansion within a DirectLOGIC DL305 rack. This item is discontinued as of July 2021 (retired), and its documentation notes UL Listed File E157382 and UL Hazardous File E200031, with RoHS status listed as No; EU REACH documentation is available. The D3‑16ND2‑1 is suited for applications requiring 24 VDC sourcing inputs for digital sensors, switches, or simple dry‑contact signals, and it serves as a drop‑in I/O option when extending a DL305 control system’s input capacity without changing the backbone hardware.