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PrehKeyTec SIK-21-NUM Keypad
Designed for demanding industrial and military deployments, the PrehKeyTec SIK-21-NUM keypad provides reliable numeric input in environments exposed to dust, moisture, and continuous mechanical use. It features a sealed silicone surface combined with an abrasion-resistant polyurethane coating, ensuring consistent operation even when wearing gloves. The keypad is IP65 rated, preventing ingress of dust and water jets, supporting use in washdown and dusty locations. It meets MIL-STD-810G standards for vibration and shock resistance, providing durability against field stresses.
Red LED backlighting enhances visibility under low light conditions, reducing operator errors. The device operates across a wide temperature range from -30°C to +50°C, suitable for varied industrial climates. With over one million keystrokes per key and custom programmable options, it supports long service life and flexible integration. The SIK-21-NUM connects via a USB interface, drawing less than 500mA with lighting included, and mounts securely using a 75mm VESA system. Its black finish and robust construction make it a practical choice for continuous-duty numeric data entry in harsh conditions.
SIK-21-NUM Features
- Adjustable Key Illumination
- IP65 & Resistant To Liquids
- Keys Resistant To Abrasion
- Designed To Meet MIL-STD 810G
- Customisation Available On Request
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Product Type
Manufacturer
Certifications & Standards
CE, FCC, IP65, MIL-STD-810G, RoHS
Ruggedness
IP Rating
Mounting Format
Country Of Manufacture
Germany
Certifications
CE, RoHS compliant, Declaration of Conformity, EN 55022:2010, FCC Part 15 Subpart B Class A, EN 55024:2010, EN61000-4-2
Custom Options Products
Cable Type,Cable Length,Interface,Keypad Layout,Custom Macro,Epoxy Coating,PU Coating
Extended Warranty
Available On Request
Housing Colour
Black
Backlight
Key illumination can be adjusted in duration and intensity
Cable
USB interface (<500 mA including lighting), others available on request
Colour
Black (similar to RAL 9011)
Connectivity
USB interface (<500 mA including lighting) , others available on request
Housing Colour
Black
Impact Protection Rate
Interface
USB - Other Interfaces available on request
Key Material
Abrasion Resistant PU Coating
Key Spacing
18 mm key pitch
Power
<500 mA including lighting
Programmable
Custom Programmable - Contact Us
Shock
Vibration MIL-STD 810G; Method 514.6 – Functional
Mechanical Shock MIL STD 810G; Method 516.6, Procedure 1
Thermal Shock-40° F to +158° F/-40° C to +70° C
Supply Current
<500 mA
Supply Voltage
+5 Volts
Lifetime
> 1 Million Operations Per Key
Operating Temperature
–30 C to + 50 C
Storage Temperature
-30 C to 70 C
The PrehKeyTec SIK-21-NUM Keypad is designed and engineered for use in demanding environments where reliability, durability are essential. The SIK-21-NUM supports a wide range of industries and operational applications.
Common deployment industries include: Defence And Military, Energy and Utilities, Food And Beverage Processing, Industrial Manufacturing, Marine And Offshore, Oil and Gas, Rail And Transport, Security And Surveillance.
Across these sectors, the SIK-21-NUM is typically used in applications such as Health, Safety, And Compliance Inspections, Industrial HMI And Machine Interfacing, Process Control And Shop-Floor Monitoring, Quality Control And Inspection, Secure Access, Authentication, And Control Terminals.
These examples demonstrate the versatility of the SIK-21-NUM across both industry sectors and real-world operational use cases. Its suitability extends well beyond the scenarios listed above, making it a flexible solution for a broad range of requirements.
For further information, or to assess whether the SIK-21-NUM is appropriate for your specific application, please contact us.
The PrehKeyTec SIK-21-NUM Keypad comes with a 1 Year Limited Warranty against defects in workmanship and materials, effective from the date of shipment (unless otherwise agreed in writing).
To receive service under this warranty, the eligible product, PrehKeyTec SIK-21-NUM Keypad, must be presented to RUGGED in the United Kingdom.
For more information about the PrehKeyTec SIK-21-NUM Keypad or to arrange repairs and services not covered by the warranty, please visit the warranty section on our website.
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SIK-21-NUM
- IP65 sealing for dust and water resistance
- MIL-STD-810G vibration and shock protection
- LED backlighting for low-light visibility
- Glove-friendly silicone and PU-coated keys
Having trouble finding what you're looking for?
Selecting the correct solution for your specific application and operating environment requires careful consideration.
At Rugged, our engineering and product specialists can advise on specifications, environmental suitability, mounting requirements, connectivity, and lifecycle planning to ensure the right fit for your deployment.
With extensive industry experience and a focus on reliability and performance, we help you select a solution aligned with your operational requirements.
Frequently Asked Questions
RUGGED offers free technical support for the lifetime of products you purchase. This includes help with setup, troubleshooting, and integration. Support is available online or directly from the technical team
A rugged keypad is an input device specifically engineered for resilience and performance in demanding settings. Unlike conventional keypads, a rugged keypad is built to endure extreme temperatures, moisture, dust, vibrations, and impact, making it ideal for industrial, military, and outdoor applications.
These keypads often feature robust materials such as stainless steel, sealed enclosures for protection against ingress, and vandal-resistant designs. Their construction ensures reliable operation and a long lifespan, even when exposed to contaminants or subjected to heavy use. Rugged Limited offers a range of high-quality rugged keypads designed to meet diverse operational needs, providing dependable data input solutions in the toughest environments.
Rugged keypads find extensive utility across various sectors due to their robust construction and ability to withstand harsh conditions. The rugged keypad applications span from retail and commercial point-of-sale (POS) systems to industrial automation where exposure to dust, liquids, and extreme temperatures is common. These keypads are also crucial in marine environments, providing reliable data entry on ships and offshore platforms.
Furthermore, Rugged Limited’s keypads are designed for critical data input in hazardous areas, ensuring operational continuity and safety. Their durability makes them suitable for public access terminals and kiosks, where they endure frequent and sometimes forceful use. The diverse range of rugged keypad applications highlights their essential role in maintaining functionality and data integrity in demanding operational settings.
Rugged Limited offers a range of keypads designed for demanding environments, and many models feature robust waterproofing. For instance, keypads such as the RKM102 are sealed to IP67 specifications, ensuring they are waterproof and able to withstand immersion in water without damage. This level of protection makes them ideal for outdoor use or in settings where exposure to liquids is common.
When considering a waterproof rugged keypad, it’s important to check the specific IP rating of the product to ensure it meets the requirements of your application. Rugged Limited’s sealed keypads are manufactured with durable materials to prevent water ingress and maintain functionality in challenging conditions.
Rugged Limited provides a range of industrial and military-grade keypads, many of which feature backlighting options. This crucial feature ensures optimal visibility and usability in low-light environments, making our keypads suitable for deployments where consistent illumination is vital. The integration of a backlit rugged keypad design helps maintain operational efficiency and accuracy, regardless of external lighting conditions.
Our commitment to delivering highly functional and durable solutions means we prioritise features that enhance user experience in demanding settings. The availability of a backlit rugged keypad across various models underscores our dedication to meeting the specific needs of industries requiring robust and reliable data input devices.
Rugged Limited offers a range of keypads that are specifically engineered for panel mounting. These keypads are built to be robust and durable, making them ideal for integration into various industrial and demanding environments.
Our selection includes options that provide secure and seamless flush mounting, ensuring a clean and integrated look with your equipment. When looking for a Panel Mount Rugged Keypad, you can expect models designed for easy installation and long-term reliability in challenging conditions.
We specifically focus on solutions that allow for efficient and reliable operation even in the toughest settings, making Rugged Limited keypads a strong choice for applications requiring a secure and integrated Panel Mount Rugged Keypad.
Rugged Limited provides keypads specifically engineered to be a . Their design prioritises ease of use in challenging environments where operators often need to wear gloves.
Key features that make Rugged Keypads suitable for glove use include:
- Tactile Feedback: The keys are designed to provide clear, discernible feedback, allowing users to confirm key presses without needing to remove their gloves.
- Appropriate Key Spacing: Keys are spaced and sized to prevent accidental presses, a common issue when operating with gloved hands.
- Durable Materials: Constructed from robust materials, these keypads can withstand rigorous use in various industrial and outdoor settings, ensuring consistent performance.
These design considerations ensure that whether you are in a manufacturing plant, a construction site, or any other demanding environment, the Rugged Limited keypad range remains fully functional and responsive, providing reliable input capabilities.
Rugged Limited specialises in providing custom rugged keypad solutions tailored to various applications. They understand that off-the-shelf keypads may not always meet the unique demands of every project, which is why they offer extensive customisation options for their products.
When you need a custom rugged keypad, Rugged Limited can work with you to design a layout that perfectly suits your needs, ensuring optimal functionality and integration. This bespoke approach allows for the creation of a custom rugged keypad that aligns with specific operational workflows and environmental challenges.
Rugged Limited provides a comprehensive selection of keypads built to withstand challenging outdoor conditions. These keypads are engineered with features that ensure durability and performance when exposed to the elements.
Key characteristics of an Outdoor Rugged Keypad from Rugged Limited include:
- Robust Construction: Made from materials such as stainless steel, they offer excellent resistance to vandalism and wear.
- Environmental Protection: Many models feature IP (Ingress Protection) ratings, such as IP65, indicating protection against dust and water jets, which is crucial for outdoor installations.
- Temperature Resistance: Designed to operate efficiently across a wide range of temperatures, from extreme cold to intense heat.
- Illumination Options: Available with backlighting, making them usable in low-light conditions typically found outdoors.
Our commitment to quality ensures that each outdoor rugged keypad delivers consistent functionality and longevity, even in the most demanding public or industrial outdoor settings.
PrehKeyTec keyboards are engineered for environments and workflows that defeat standard keyboards. They offer high actuation lifecycles, from over 30 million on elastomer models to over 100 million on capacitive glass models, programmable keys that map to specific tasks, and rugged ABS polycarbonate housings. Medical variants add sealed glass surfaces, IP66 protection, glove-friendly capacitive input and EN 60601-1-2 compliance for clinical use, with the HospiTouch also meeting MIL-STD-810G. The result is faster operation, longer service life and fewer failures in retail, logistics, industrial and medical settings. Exact features, lifecycles and certifications vary by model, so confirm the specification on the relevant product page.
Yes. PrehKeyTec produces dedicated medical keyboards with sealed capacitive glass surfaces designed for clinical and cleanroom environments, including the HospiTouch and GIK-2700 series. These register input even when operated with surgical gloves, and their sealed, impact-resistant housings withstand fluids, dust and corrosive cleaning agents to support infection control. Several carry IP66 sealing and EN 60601-1-2 electromagnetic compatibility for use near sensitive medical equipment, and the HospiTouch additionally meets MIL-STD-810G. Integrated glide pads or touchpads provide cursor control in sterile settings. Sealing, medical certifications and surface technology vary by model, so confirm the relevant ratings and standards on the specific product page.
PrehKeyTec keyboards carry certifications appropriate to their intended use. Across the range you will find CE marking, FCC Part 15 and EN 55022 electromagnetic compatibility, and RoHS compliance. Medical models add EN 60601-1-2 for electromagnetic compatibility in clinical environments, and the HospiTouch is rated to IP66 and tested to MIL-STD-810G for shock and vibration, with stated tolerance to shock pulses of 50g across three axes. POS and industrial models such as the MCI-84 meet EMI standards including EN 55022 and FCC Part 15 Subpart B Class A. The exact certifications differ significantly by model, so confirm the standards listed on the relevant product page.
PrehKeyTec keyboards serve retail, logistics and warehousing, healthcare and medical, pharmaceutical and industrial manufacturing. Programmable POS and industrial keyboards such as the MCI-84 suit point-of-sale, inventory management, warehouse picking and proof-of-delivery workflows, while sealed capacitive medical keyboards like the HospiTouch and GIK-2700 series suit clinical workstations, medical carts and cleanrooms. The common requirement is durable, reconfigurable input that survives heavy use or strict hygiene routines. Models range from semi-rugged retail units to fully sealed, MIL-STD-tested medical keyboards. Industry suitability depends on the specific model’s sealing, certifications and key technology, so check the listed industries and ratings on each product page.
Yes. PrehKeyTec keyboards are often specified with integrated peripherals to consolidate a workstation into a single device. Many models include a built-in touchpad for cursor control, and status LEDs for caps, num and scroll lock plus accept indicators. POS-oriented keyboards commonly support magnetic stripe card readers and offer accept LEDs for card-read confirmation, which suits retail and secure-access terminals. Programmable keys, custom keycaps and adjustable feedback further tailor the unit to a workflow. The exact combination of card reader, touchpad and indicators depends on the model and configuration chosen, so confirm the available integrated options on the relevant product page before ordering.
PrehKeyTec is a German manufacturer of industrial and medical keyboards and keypads, known for programmable, durable input devices used in point-of-sale, healthcare, logistics and industrial environments. The range spans compact programmable POS keyboards, full alphanumeric units, dedicated keypads and sealed medical keyboards with capacitive glass surfaces. Many models offer extensive programmability, integrated touchpads, magnetic card readers and high actuation lifecycles. PrehKeyTec hardware is chosen where keys must be reconfigured to a workflow and survive heavy continuous use. The catalogue includes both semi-rugged retail keyboards and fully sealed medical models. Sealing, key technology and certifications vary considerably across the range, so confirm details on the relevant product page.
PrehKeyTec keyboards are built for heavy continuous use, with key lifecycles that vary by technology. Elastomer-switched models such as the MCI-84 are rated for over 30 million actuations, while capacitive glass models such as the HospiTouch and GIK-2700 series are rated for over 100 million actuations. Rugged ABS polycarbonate housings resist dust and impact, and tested models tolerate shock and vibration, with the HospiTouch meeting MIL-STD-810G shock and vibration criteria. Wide operating ranges support demanding settings. These figures reflect specific models, and actuation life, housing and environmental ratings differ across the catalogue, so confirm the durability specification on the relevant product page before specifying.
Yes. Programmability is a core PrehKeyTec strength. Many models allow keys to be reconfigured, with programmable layouts, macros and adjustable repeat frequency and delay, so an operator’s most-used functions can be assigned to dedicated keys. The MCI-84, for example, offers programmable keys and custom macro and keycap options, which suits point-of-sale, logistics and industrial workflows where speed and consistency matter. Custom layouts, languages, interfaces and keycaps are commonly available, letting a keyboard be tailored to a specific task or software. The exact programming features, tools and custom options vary by model, so confirm what is supported on the relevant product page.