Description:

A capacitive touch sensor is a device that detects touch or proximity through the capacitance change caused by the presence of a conductive object (like a finger).

General Specifications

1. Type:
• Single capacitive touch sensor (often referred to as a capacitive touch button).
2. Sensing Area:
• Diameter or area varies; common sizes range from 10 mm to 20 mm for a single sensor.
3. Operating Voltage:
• Typically operates within a range of 1.8 V to 5.5 V DC, with some variations depending on the specific model.
4. Power Consumption:
• Generally low power consumption, typically in the microampere (µA) range when idle.
5. Sensitivity:
• Adjustable sensitivity levels to detect touches at varying distances (typically around 1-10 mm).
6. Response Time:
• Fast response time, generally within milliseconds (1-10 ms).
7. Interface:
• Digital output (usually GPIO), with some models providing analog output.
• Communication protocols might include I2C or SPI for more advanced features.
8. Operating Temperature Range:
• Typically from -40°C to +85°C.
9. Material:
• Capacitive sensors can be made from conductive materials (copper, indium tin oxide) and are often mounted on PCBs.

Applications

1. Consumer Electronics:
2. Home Appliances:
3. Automotive:
4. Industrial Control Panels: