Allen-Bradley 1756-IRT8I

Product identity

Product overview

The 1756-IRT8I is a ControlLogix temperature-input module with eight isolated channels for RTD or thermocouple modes. The specification lists 24-bit resolution along with resistance and millivolt ranges. Series-specific power values and cold-junction sensor requirements need attention when defining the supply.

Manufacturer

Allen-Bradley

Part number

1756-IRT8I

Product type

Allen-Bradley 1756-IRT8I — 8-channel RTD/thermocouple input module

Series

ControlLogix 1756 I/O

Category

PLC and I/O modules

Technical reference

Input configuration

8 isolated channels for RTD or thermocouple mode

Resistance input ranges

1–500 Ω; 2–1000 Ω; 4–2000 Ω; 8–4000 Ω

Millivolt input range

−100 to +100 mV

Resolution

24 bits

Backplane current at 24 V

150 mA

Catalog reference data reviewed 2026-09-08. Confirm the exact unit and application before ordering; these parameters do not establish interchangeability.

Before requesting this part

Include the hardware series and sensor types in the request. For thermocouple use, specify the cold-junction compensation arrangement and whether sensors are required. The source states that 1756-CJC sensors are ordered separately; confirm actual accessories with the offered unit.

Browse plc and i/o modules or read our verification process.

Classification terminology includes information from ETIM International under ODC Attribution 1.0.

Sourcing capabilities

Conditions considered on request

These are sourcing capabilities, not claims of current stock. Exact condition and evidence are stated in the quotation.

From requirement to a usable quote

Send the full MPN, quantity, acceptable condition, delivery country and required date. We may ask for missing identity or application details before sourcing.

A proposed quote must identify the exact item, revision where relevant, condition, quantity, price and currency, estimated lead time, delivery terms, warranty provider and scope, and validity. Supply remains subject to verification.

Read about hard-to-find part sourcing, replacement review or a multi-part requirement.