Metal Touch Sensor Switch Module

Discover the Metal Touch Sensor Module, a versatile component featuring a KRS13 Darlington NPN transistor and an integrated LM393 circuit with dual comparators. This module transforms touch into control, leveraging the 50 Hz signal present in modern environments to create an efficient and reliable touch-sensitive interface.

  Key Features:  

• Integrated LM393 chip for signal control
• Operates at a working voltage of DC 5V
• Single-channel signal output
• Low-level output signal for human body touch sensor alarm
• Adjustable sensitivity with VR1 trimmer
• LED indicator for visual feedback
• Compact size with easy-to-use pin connectors

  Specifications:  

• Power Supply: 3.3V to 5.5V
• Sensitivity: Adjustable
• Sensor Type: Analog and digital output
• Dimensions: 34 x 16mm
• Weight: 4g

  Pin Description:  

• Digital Out: Outputs a signal when the metal pike of the sensor is touched.
• Analog Out: Provides the direct measuring value of the sensor unit.
• LED1: Indicates that the sensor is supplied with voltage.
• LED2: Indicates the detection of a magnetic field.

  Functionality:  

The sensor consists of three main components: the sensor unit, the amplifier, and the comparator. The sensor unit measures the physical area and sends an analog signal to the amplifier. The amplifier then amplifies the signal based on the resistance value of the potentiometer and sends it to the analog output of the module. The comparator switches the digital output and the LED when the signal falls below a specific value.

Adjust the sensitivity by manipulating the potentiometer.

Note: The signal is inverted, so a high value is represented as a low voltage value at the analog output.

  Package Includes:  

• 1 x Metal Touch Sensor Module