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Marvo Part ID: MV-74UG

£172.62 (ex. VAT)


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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 currently delivers to the United Kingdom (excluding Northern Ireland), the United States of America and Germany. If you cannot find your delivery address at checkout, this is most likely because Marvo does not currently deliver to this location. There are ongoing efforts to make Marvo accessible to a global market, keep your eyes peeled as our service expands to new locations. All orders are sold with a streamlined delivery process ensuring that you get your part, fast. Marvo is designed to offer you quick, easy and reliable access to critical components and uses well established global shipping services, including but not limited to DHL, UPS and FedEx.


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EL1904 Product Description

The Beckhoff EL1904 Digital Input Module is a state-of-the-art solution designed to enhance the efficiency and reliability of industrial automation systems. This compact and robust module is engineered to seamlessly integrate into a wide range of control systems, providing precise and rapid digital input functionalities.

With its four fail-safe inputs, the EL1904 module is capable of handling 24 V DC signals, making it an ideal choice for applications requiring high levels of operational safety and accuracy. The inputs are monitored for both signal state and diagnostics, ensuring that any discrepancies are quickly identified and addressed.

The module's slim profile, measuring just 12mm in width, allows for efficient use of control cabinet space, while its height and depth of 100mm and 68mm respectively, ensure it can be easily accommodated in standardised installations. The EL1904 is designed for mounting on a 35 mm DIN rail, facilitating straightforward installation and maintenance.

Each input channel is equipped with a green LED status indicator, providing at-a-glance verification of operation and simplifying troubleshooting. The terminal's response time is typically 4 ms, ensuring swift and responsive input reading and processing.

Constructed to withstand the rigours of industrial environments, the EL1904 operates reliably within a temperature range of 0°C to +55°C and is designed to resist the challenges of non-condensing humidity levels ranging from 5% to 95%. Its robust design is complemented by an IP20 protection rating, safeguarding the module's internal components from the ingress of solid objects.

The EL1904 Digital Input Module is compliant with international standards, including CE and cULus, and is suitable for use in a variety of industrial applications. Its adherence to these standards underscores its quality and reliability, making it a trusted component in any automation system.

For professionals seeking a digital input solution that combines compact design with high performance and reliability, the Beckhoff EL1904 Digital Input Module represents a superior choice that aligns with the demanding requirements of modern industrial automation.

Frequently Asked Questions

What type of input does the EL1904 module support?

The EL1904 is a digital input module that supports 24 V DC inputs.

How many input channels does the EL1904 have?

The EL1904 module features 4 digital input channels.

Is there any visual indication for input status on the EL1904?

Yes, the EL1904 has LED indicators for each input channel to provide a visual status of the inputs.

What is the response time for the inputs on the EL1904?

The typical response time for the EL1904 inputs is 4 ms, with the maximum being determined by the fault response time.

Can the EL1904 be used in explosive environments?

The EL1904 has versions that are certified for use in potentially explosive environments, marked with specific ATEX codes.

What is the maximum cable length for sensors connected to the EL1904?

The maximum cable length for sensors connected to the EL1904 is 100 meters, whether shielded or unshielded.

What is the power consumption of the EL1904 module?

The power consumption of the EL1904 module is typically 12 mA when all 4 channels are occupied, and approximately 1.4 mA when no channels are occupied.

What type of mounting does the EL1904 use?

The EL1904 is designed to be mounted on a 35 mm DIN rail with a locking mechanism.

What is the operating temperature range for the EL1904?

The operating temperature range for the EL1904 is from 0°C to +55°C.

Does the EL1904 offer electrical isolation between channels?

No, the EL1904 does not provide electrical isolation between the input channels.

What is the protection class of the EL1904?

The EL1904 has a protection class of IP20.

What approvals does the EL1904 have?

The EL1904 has CE, cULus, and ATEX approvals.