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Specification Description
Part Number KL1104
Manufacturer Beckhoff
Type Digital Input Terminal
Input Voltage 24 V DC (-15% / +20%)
Number of Inputs 4
Signal Voltage "0" -3 V to +5 V
Signal Voltage "1" 15 V to 30 V
Input Filter 3 ms
Input Current Typically 5 mA
Current Consumption from K-bus Typically 5 mA
Electrical Isolation 500 V (K-Bus/field potential)
Bit Width in the Process Image 4 input bits
Configuration No address or configuration settings required
Dimensions (W x H x D) 15mm x 100mm x 70mm (connected width: 12mm)
Weight Approx. 55 g
Permissible Ambient Temperature Range Operation: -25°C to +60°C, Storage: -40°C to +85°C, Special conditions apply for ATEX areas
Relative Humidity 5% to 95%, non-condensing
Vibration/Shock Resistance Conforms to EN 60068-2-6 / EN 60068-2-27
EMC Resistance/Emission Conforms to EN 61000-6-2 / EN 61000-6-4
Installation Position Variable
Protection Class IP20
Approvals CE, cULus, ATEX, GL
Pluggable Wiring Available at all KSxxxx series terminals

Commonly Asked Questions

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Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.


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Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services.  Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.


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KL1104 Product Description

The Beckhoff KL1104 Digital Input Terminal is a compact and efficient solution for integrating binary control signals from the process level into your automation system. This four-channel input terminal is designed to capture signals in an electrically isolated form, ensuring reliable and secure communication with the higher-level control unit.

Engineered for space-saving installation within control cabinets, the KL1104 boasts a narrow design with a width of just 15mm when connected. It is equipped with input filters that provide a response time of 3 ms, making it suitable for a wide range of industrial applications where speed and precision are paramount.

The terminal operates on a nominal voltage of 24 V DC, with a permissible range that accommodates minor fluctuations in power supply. It is designed to recognise a "0" signal voltage from -3 V to +5 V and a "1" signal voltage from 15 V to 30 V, ensuring versatility in various operating conditions. Each channel's status is conveniently indicated by light-emitting diodes, allowing for quick visual diagnostics.

With a typical input current of 5 mA and a similar current consumption from the K-bus, the KL1104 is an energy-efficient addition to your system. It also features electrical isolation of 500 V between the K-Bus and field potential, enhancing the safety and integrity of your operations.

The terminal is built to withstand a wide range of environmental conditions, with an operational temperature range of -25°C to +60°C and storage temperatures from -40°C to +85°C. It also conforms to stringent vibration and shock resistance standards, ensuring durability and longevity in challenging industrial settings.

The Beckhoff KL1104 is a versatile and robust component that simplifies the integration of digital inputs into your automation system, making it an essential part of any modern industrial operation.