The Allen-Bradley 1756-IR6I is a six-channel isolated RTD input module for ControlLogix controllers, designed to read RTD sensors in a single 1756 I/O slot. Each of its six input channels is individually isolated from the others and from the backplane, offering 250 V continuous isolation to help prevent ground loops and channel interference in industrial environments. The module supports RTD input ranges of 1–487 Ω, 2–1000 Ω, 4–2000 Ω, and 8–4020 Ω with 16‑bit resolution per channel, enabling precise temperature measurements across common RTD types; it uses a 20‑pin form factor and is part of the ControlLogix analog I/O family for temperature monitoring.
