Mitsubishi QX81

Mitsubishi QX81 | 16-Point Digital Input Module for MELSEC-Q Series PLCs

Overview

The Mitsubishi QX81 is a 16-channel digital input module from the MELSEC-Q Series, offering 24V DC sink/source selectable inputs. With fast response time and built-in LED status indicators, this module is ideal for high-reliability input signal acquisition in demanding industrial automation environments.

Key Features

• Number of Inputs: 16 digital channels

• Input Type: Sink/source selectable

• Rated Input Voltage: 24V DC (20.4–26.4V DC range)

• Input Current: Approx. 5 mA per point

• Response Time: 1 ms (configurable)

• LED Indicators: Individual channel status LEDs

• Common Terminal: 4 points/common

• Compact Design: Saves space in control cabinets

Technical Specifications

• Model: QX81

• Series: MELSEC-Q

• Isolation: Photocoupler

• Connector Type: Screw or terminal block (via accessory)

• Mounting: Q-series base unit slot

• Operating Temperature: 0°C to 55°C

• Weight: Approx. 0.15 kg (0.33 lbs)

• Certifications: CE, UL, cUL

Applications

• Industrial sensor signal acquisition

• Switch and button interface

• Safety interlocks and machine controls

• Monitoring contact signals

• General-purpose digital input needs

Why Choose the QX81?

• Flexible Input Support: Compatible with both sink and source wiring

• Fast Response: Ideal for high-speed input detection

• Built-In Diagnostics: LED status for simplified maintenance

• Efficient Design: Reliable performance in a compact format

Order Now

The Mitsubishi QX81 digital input module is available and ready to ship. 

Return to the Mitsubishi MELSEC-Q Series collection for more options in this family.

Explore our full range of Mitsubishi MELSEC Programmable Controllers (PLC) to discover scalable automation solutions, from legacy MELSEC systems to next-generation PLCs designed for high performance, connectivity, and flexibility.

NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply