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iKey SL-91 Rugged Keyboard
The iKey SL-91 Rugged Keyboard is built around its sealed polycarbonate housing and industrial silicone keypad, making it suited for industrial and field-ready environments such as manufacturing, logistics, and remote data entry. Its design resists dust, liquids, and corrosive substances, complying with IP65 and NEMA 4X standards. The epoxy-coated keys provide tactile feedback with mechanical snap and are optimised for use with gloves, sustaining more than 10 million key actuations for continuous-duty operation.
This keyboard supports both PS/2 and USB interfaces, ensuring wide compatibility with Windows and Macintosh systems. It meets MIL-STD-810G shock and vibration standards, tolerating 50g shock pulses and vibration frequencies from 20Hz to 2kHz. The SL-91 operates reliably in temperatures from -40 6C to +70 6C and can be stored safely up to +90 6C. Its compact dimensions and integrated mounting holes enable installation in limited spaces or mobile workstations, making it a robust input solution for harsh industrial conditions.
SL-91 Features
- Integrated LED Backlighting
- 24 Function Keys + 10-Key Numeric Pad
- Lightweight ABS Polycarbonate Case
- USB and PS2 Configurations Available
- Various Keyboard and Language Layout Options
- Customisation Available On Request
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Product Type
Manufacturer
Certifications & Standards
Ruggedness
IP Rating
Mounting Format
Country Of Manufacture
United States
Backlight
No Backlight
Case Material
ABS Polycarbonate
Certifications
IP Rated, NEMA 4X UL60950, FCC Part 15 Class B
Custom Options Products
Keyboard Layout,Keyboard Language,Cable Type,Cable Length,Interface
Dimensions
11.40" x 6.30" x 1.90" (w-h-d) 289.6mm x 160.0mm x 48.3mm
Housing Colour
Black
Humidity
100% Humidity Resistant
Cable
LENGTH: 4 ft coiled (1.2m) DESIGN: PS/2 or USB Cable
Compatibility
PS/2 KEYBOARD: All Windows Operating Systems USB KEYBOARD: All Windows and Macintosh OS
Flammability
PRINTED CIRCUIT BOARD: 94 VO SILICONE OVERLAY: 94HB INTERFACE CABLE: 94 VO
Function Keys
12 Keys
Key Feedback
Tactile with Mechanical Snap
Key Material
Epoxy
Key Switch
MATERIAL: Epoxy-Coated Industrial Silicone Rubber LIFE: Greater Than 10 Million Cycles TRAVEL: 0.055 in. (1.4mm) ACTUATION FORCE: 7.03 oz +/- 0.70 oz (200g +/- 20g) FEEDBACK: Tactile with mechanical snap
Lifespan
>10 Million Actuations
No. Of Keys
91
Pointing Device
No Pointer
Power
PS2: KEYBOARD: 200mA@5V (Keyboard port) USB: 200mA@5V (from CPU port)
Product Weight
2.25 lbs +/- 0.10 lbs (1.02 kg +/- 0.05 kg)
Shock
3 x 11 ms Pulses of 50g on each of 3 Axes
Switch Force
200g (+/- 20g)
Switch / Key Travel
0.055 in (1.4mm)
Vibration
POWER SPECTRAL DENSITY: 0.04g/Hz FREQUENCY RANGE: 20Hz - 2 kHz DURATION OF TEST PER AXIS: 3 hours
Shock
3 x 11 ms Pulses of 50g on each of 3 Axes
Temperature Rating
STORAGE: -40C to +90C (-40F to +194F) OPERATING: -40C to +70C (-40F to +158F)
The iKey SL-91 Rugged Keyboard is designed and engineered for use in demanding environments where reliability, durability are essential. The SL-91 supports a wide range of industries and operational applications.
Common deployment industries include: Construction, Defence And Military, Energy and Utilities, Industrial Manufacturing, Logistics And Supply Chain, Marine And Offshore, Oil and Gas, Warehousing.
Across these sectors, the SL-91 is typically used in applications such as Field Data Capture And Reporting, Forklift And Materials-Handling Terminals, Health, Safety, And Compliance Inspections, Inventory Management And Stock Control, Mobile Workforce Operations, Process Control And Shop-Floor Monitoring, Vehicle-Mounted Computing (MDTs / VMCs), Warehouse Picking And Put-Away.
These examples demonstrate the versatility of the SL-91 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 SL-91 is appropriate for your specific application, please contact us.
The iKey SL-91 Rugged Keyboard comes with a 3 Years Manufacturers Limited Warranty + Option To Extend 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, iKey SL-91 Rugged Keyboard, must be presented to RUGGED in the United Kingdom.
For more information about the iKey SL-91 Rugged Keyboard or to arrange repairs and services not covered by the warranty, please visit the warranty section on our website.
Do you need further details about the iKey SL-91 Rugged Keyboard, or would you like to discuss a customised solution or demonstration?
At RUGGED, we recognise that every project has its own unique demands. If you have any questions about the iKey SL-91 or need a custom Rugged Keyboard solution designed specifically for you, our team of technical experts are ready to assist you.
Alternative Products
Explore alternative products offering comparable features, performance, and build quality to the model you are currently viewing.
Our related solutions provide variations in configuration, functionality, and form factor to suit different application requirements. Each option has been selected to meet the same high standards of reliability and performance.
Browse the related products below to identify the most suitable fit for your deployment.
PM-81
- Stainless steel housing
- Sealed NEMA 4X design
- Over 10 million key actuations
- Compatible with Windows and Mac OS

SL-880-OEM
- NEMA 4X sealed design
- MIL-STD-461E electromagnetic compliance
- Mechanical snap tactile keys
- HulaPoint II integrated pointing device

SL-88
- Compact 88-key layout with 12 function keys
- IP65 and NEMA 4X rated for dust and water resistance
- MIL-STD-810G certified for shock and vibration
- Over 10 million key actuations lifespan

BT-87-TPW
- NEMA 4X and IP rated sealing
- Wireless Bluetooth connectivity with two AA batteries
- MIL-STD-810 shock and vibration resistance
- Tactile mechanical snap keys with over 10 million actuations

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
Yes, many of the rugged keyboards available from Rugged Limited are engineered to be compatible with both Windows and Linux operating systems. This broad compatibility ensures that users can integrate a durable and reliable rugged keyboard into diverse computing environments without issues.
Rugged Limited provides a selection of rugged keyboards that are built to withstand challenging conditions while maintaining essential functionality across different platforms. When selecting a rugged keyboard, it is always advisable to check the specific product’s technical specifications to confirm compatibility with your intended operating system.
Rugged Limited understands the importance of customisation and efficiency in demanding environments, which is why several of their rugged keyboard models are designed with programmable keys. This feature allows users to assign specific functions, macros, or shortcuts to individual keys, tailoring the keyboard to their unique operational needs and workflows. The flexibility offered by a
rugged keyboard
with programmable keys can significantly enhance productivity and ease of use in various industrial, public service, and specialized applications where rapid and precise input is critical. This commitment to adaptable and robust input solutions ensures that professionals can achieve optimal performance even in challenging conditions.
Rugged Limited provides a range of rugged keyboards specifically engineered to meet the demanding requirements of military applications. These keyboards are designed to withstand extreme temperatures, vibrations, shocks, and exposure to dust and liquids, making them ideal for deployment in challenging operational environments.
Our rugged keyboards feature robust casings, often manufactured from stainless steel or aluminum, and incorporate sealed keypads to prevent ingress of contaminants. Many models also include features like adjustable backlighting for use in varying light conditions, and some are night vision compatible, which is crucial for covert operations. The design prioritises reliability and consistent performance, ensuring that critical data entry functions remain operational when they are needed most.
Furthermore, the durability of a rugged keyboard from Rugged Limited ensures a longer product lifespan and reduced maintenance, offering a cost-effective solution for military organisations seeking dependable input devices.
A rugged keyboard is specifically engineered for resilience, offering superior protection against elements like dust, dirt, liquids, and extreme temperatures. These keyboards are built with robust materials and construction techniques to ensure reliable performance in industrial, military, and outdoor settings where standard peripherals would fail.
Rugged Limited provides a range of rugged keyboards that are not only tough but also deliver consistent functionality when it matters most. They are an essential component for maintaining operational efficiency in challenging work conditions, ensuring data input remains uninterrupted and accurate.
Explore our selection of rugged keyboards designed for ultimate durability and performance.
Rugged Limited specialises in providing industrial-grade solutions, and our rugged keyboards are engineered to withstand harsh operating conditions, including exposure to shocks and vibrations. This resilience is achieved through robust construction and the use of durable materials, ensuring reliable performance where standard keyboards would fail.
Our selection includes a variety of rugged keyboard types, such as panel mount, desktop, and embedded options, all built with an emphasis on durability. They are designed to meet the rigorous demands of sectors requiring reliable human-machine interfaces that can endure constant motion, impacts, and other challenging environmental factors. Therefore, any rugged keyboard from Rugged Limited is an excellent choice for environments where shock and vibration resistance are critical considerations for uninterrupted operation and longevity.
Rugged Limited specialises in providing industrial peripherals built to withstand harsh conditions, including marine settings. Our rugged keyboards are engineered with features like IP (Ingress Protection) ratings, which are crucial for protecting against water and other liquids commonly found in marine applications. This ensures that the keyboard can endure exposure to moisture, salt spray, and even submersion, depending on the specific IP rating.
Furthermore, the materials used in our rugged keyboard manufacturing are selected for their durability and resistance to corrosion, which is a significant factor in saltwater environments. This robust construction guarantees reliable operation and a long lifespan, reducing downtime and maintenance in challenging marine conditions.
Rugged keyboards are an excellent choice for vehicle integration due to their robust construction and ability to withstand challenging conditions. These keyboards are engineered to operate reliably in environments subject to constant vibration, extreme temperatures, and exposure to dust and liquids, which are common occurrences in vehicles.
For instance, one such rugged keyboard solution features a compact design, making it suitable for dashboards or other space-constrained areas within a vehicle. It includes a fully sealed IP67 trackball for precise cursor control and is equipped with an integrated red backlight, ensuring readability in low-light conditions often experienced in vehicle cabins. Additionally, its 2.5m USB cable provides flexible connectivity options for various vehicle setups.
The durability of a rugged keyboard ensures consistent performance, whether it’s used in emergency services, logistics, or field operations, where reliability is paramount.
Rugged Limited offers a range of durable keyboards, and while the exact level of environmental protection can vary by model, many of our rugged keyboards are engineered to withstand exposure to liquids.
These robust input devices are often designed with features to prevent water ingress, making them suitable for industries where spills, splashes, or wash-downs are common. For specific details on the waterproof ratings of a particular rugged keyboard, it’s always best to consult the individual product specifications.







