Capacitive Touch Switch Module – TTP223B, 2–5.5V Input

The TTP223B Capacitive Touch Switch Module is a compact input device designed to replace traditional mechanical buttons with a touch-sensitive interface. It operates using capacitive sensing technology and provides a digital output based on user interaction. The module supports a wide input voltage range from 2.0V to 5.5V and features low power consumption with automatic low-power mode after inactivity. Built for stable and reliable operation, it can be mounted behind non-metallic surfaces such as plastic or glass for hidden touch applications. Ideal for embedded systems, control panels, and interactive electronics projects.

• TTP223B capacitive touch sensing IC
  
• Momentary touch output operation
  
• Wide operating voltage range 2.0V–5.5V
  
• Low power consumption in standby mode
  
• Automatic low-power mode after 12 seconds inactivity
  
• Digital output signal (HIGH/LOW)
  
• High sensitivity touch detection
  
• Supports hidden installation behind non-metallic surfaces
  
• Compact PCB design 24 × 24 mm
  
• Integrated mounting holes for secure installation
  
• Fast response time in touch mode (60 ms)
  
• Stable output with noise resistance
  
• No mechanical wear compared to push buttons
  
• Compatible with microcontrollers and Arduino systems
  
• Supports both direct and surface touch activation

• Operating Voltage: 2.0–5.5V DC
  
• Typical Operating Voltage: 3V DC
  
• Output Type: Digital HIGH/LOW
  
• Output High Voltage (VOH): 0.8 × VCC
  
• Output Low Voltage (VOL): 0.3 × VCC
  
• Output Sink Current: 8 mA @ 3V
  
• Output Source Current: 4 mA @ 3V
  
• Response Time (Touch Mode): 60 ms
  
• Response Time (Low Power Mode): 220 ms
  
• Auto Low Power Timeout: 12 seconds
  
• Touch Method: Capacitive sensing
  
• Mounting Holes: 4 × M2
  
• Module Dimensions: 24 × 24 × 7.2 mm
  
• Surface Compatibility: Non-metallic materials only
  
• Operating Mode: Momentary (active while touched)

• Capacitive Touch Switch Module 3D Model
• Capacitive Touch Switch Module – TTP223B

• Capacitive TTP223 Touch Sensors Explained with Arduino