SimScroll® Advanced Scrolling Switch Interface


The SimScroll® interface is a circular switch array that utilizes our advanced SimScroll® switch technology. It is perfect for products requiring effective navigation of large menu lists. Typical applications include universal remote controls, MP3 players, and A/V media system controls.

Through our decades of experience and expertise in switch technology, we understood that light actuation force switches were quickly becoming the industry standard for high-end products. SimScroll® provides the unique ability to add elegance and effectiveness to your interface designs. With SimScroll® you can more cost-effectively offer your customers the experience of capacitive touch technology.

SimScroll® is a proprietary technology that uses a flexible overlay laminated to the switch circuitry. As a result of low actuation force and short travel distance, the experience of a capacitive touch switch is simulated. SimScroll® construction also permits use of thicker overlay materials providing a smooth glass-like finish or brushed metallic finish for a stainless steel look.

Typical Construction & How it Works

  • 16 SimScroll® interface elements in a 1.5″ (38mm) circular array are standard. The number of switch elements and diameter can be customized for specific design requirements
  • Actuation force: 1.5oz to 2.5oz (43gr to 71gr)
  • 0.010″ (.25mm) polycarbonate overlay (hardcoated, textured or brushed metallic finishes)
  • 0.007″ (0.18mm) polyester overlay (hardcoated and UV resistant finishes)
  • Activation pads can be screened directly on overlay or on an additional polyester layer
  • Selectively printed screenable adhesive or die cut spacer
  • Conductive circuitry/force sensing layer
  • Polyester circuit
  • Pressure sensitive mounting adhesive

  1. Force applied on top of the polycarbonate/polyester overlay is transmitted to the force-sensing resistor material.
  2. This causes a drop in resistance, which is detected by the electronics connected to the membrane circuitry.

  3. The electronics then perform a switching action.
  4. Switch is not affected by temperature or pressure changes.

What are the Benefits of SimScroll®?

  • Low actuation force – Simulates the feel of capacitive touch.
  • Resistive technology – May be actuated with use of a stylus or through gloved operation.
  • Scrolling/Sliding action – Ideal for navigating large menus.
  • No programming or controller chips – Easy integration into existing platforms at a lower cost than capacitive technology.
  • Temperature, chemical & moisture resistant – Dependable performance in a wide range of environments.
  • All the features & benefits of traditional membrane switch technology.

UL Recognized Component

SimScroll® is UL-recognized under File #E156070.


Overlay Thickness Actuation Force Nominal Thickness
0.010″ (0.25mm) 1.5-2.5 oz. (43-71 grams) 0.020″ (0.25mm)
0.015″ (0.38mm) 3-6 oz. (85-170 grams) 0.025″ (0.64mm)
0.020″ (0.5mm) 5-11 oz. (142-312 grams) 0.030″ (0.75mm)
0.030″ (0.75mm) 9-22 oz. (255-624 grams) 0.040″ (1.00mm)

Life Cycle: >1,000,000 actuations with no stress cracks in the polycarbonate film

Environmental Testing

Subjected to temperature and humidity cycle of:

  1. Transition from ambient 1.0 Hour
  2. Steady state @ 5 C, 30% RH +/- 20% 1.0 Hour
  3. Transition to 85 C, 50% RH 1.0 Hour
  4. Steady state @ 85 C, 50% RH 1.0 Hour
  5. Transition from 85 C to 45 C, 90-98% RH 1.0 Hour
  6. Steady state @ 45, 90-98% RH 1.0 Hour
  7. Transition from 85 C to 45 C, 90-98% RH 1.0 Hour
  8. Transition from 25 C to 105 C, 30% RH +/- 20% 1.0 Hour
  9. Steady state @ 105 C, 30% RH +/- 20% 1.0
  10. Transition from 105 C to 25 C, 20%RH 2.0 Hours
  11. Steady state @ 25 C, 20%RH 1.0 Hour

Subjected to 30 cycles and monitored at various points in the test cycle. No anomalies found in the switch. Additional testing is ongoing

Operating Temperature: Designed for -10 C to + 105 C, test results pending

Resistance: Open > 1 Megohm / Closed < 1 Kilohm

Set your equipment apart from the competition with SimScroll® membrane switch keypads.

Our U.S.-based design engineers will help you determine if SimScroll® is a suitable technology for your project, and make the best recommendations that meet your requirements for performance, construction, appearance, and budget.

Download the SimScroll® data sheet.

Contact Pannam now to discuss SimScroll® for your project.

Visit our Product Gallery to learn more about the various constructions and product features we can offer, and learn how Pannam can customize your user-interface to meet and exceed your unique application requirements.

Components & Options

The integration of custom components to your membrane switch assembly can often add significant functionality and enhance the user experience when operating your equipment.

Some of the more common components are:

Contact Pannam now regarding your membrane switch assembly project.