OEM SB20B-NT Infrared No-Touch Exit Button

OEM SB20B-NT No-Touch Button

The OEM SB20B-NT Exit Button facilitates touch-free door release in secure environments. This infrared proximity sensor detects hand gestures to trigger the access control relay. It utilizes an active IR signal to monitor the immediate area in front of the faceplate. The detection distance typically ranges from 5 to 15 centimeters. This range allows users to activate the exit mechanism without making physical contact with the hardware.

The internal relay supports a maximum current of 3 amperes at 36V DC. This capacity ensures compatibility with most electromagnetic locks and electric strikes. The device features three primary wiring terminals: Normally Open, Normally Closed, and Common. This configuration allows for flexible integration into various circuit designs. Installers choose the appropriate contact based on the fail-safe or fail-secure requirements of the installation.

Construction consists of a durable aluminum alloy faceplate. This material resists corrosion and withstands frequent use in high-traffic corridors. The surface-mount or flush-mount design fits standard electrical backboxes. A dual-color LED ring provides clear visual signaling. The ring remains blue during standby mode. It switches to green when the sensor detects a hand. This feedback confirms the request-to-exit command has been processed.

The unit operates effectively within a temperature range of -20 to 55 degrees Celsius. It maintains performance in humidity levels up to 95 percent. The absence of moving mechanical parts increases the overall lifespan of the device. Mechanical buttons often suffer from spring fatigue or contact oxidation. This electronic sensor bypasses those common failure points.

Security professionals deploy this hardware in hospitals, laboratories, and clean rooms. It prevents the transfer of pathogens by removing the need for touch. The adjustable sensitivity allows for fine-tuning in narrow hallways. This prevents accidental triggers from passing traffic. The device requires a stable 12V DC input for optimal operation.

Key Features

• Infrared Detection
  The onboard IR sensor identifies proximity within an adjustable 5cm to 15cm range.

• Relay Configuration

  • Normally Open (NO) output
  • Normally Closed (NC) output
  • Common (COM) terminal

• Visual Feedback
  Integrated dual-color LED indicators provide immediate status updates for the user.

• Environmental Resistance

  • Operating temperature: -20°C to +55°C
  • Corrosion-resistant aluminum alloy faceplate

Specifications

What’s in the Box

• OEM SB20B-NT Infrared Sensor Unit

• Wiring Harness

• Mounting Screws

• Technical Installation Diagram

Why Choose OEM SB20B-NT

• Hygienic Operation: The contactless design minimizes germ transmission in public facilities and medical environments.

• High Durability: Solid-state components offer a longer MTBF compared to traditional mechanical switches by removing moving parts.

• Versatile Integration: Standard NO/NC/COM outputs ensure compatibility with all major door controllers and electronic locking hardware.