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TTP223 Mini 1-Way Touch Key Red capacitive touch sensor module
TTP223 mini 1-way red capacitive touch key module with digital output—ideal for touch-activated switches and DIY electronics projects.
Description
The TTP223 Mini 1-Way Touch Key Module is a compact and reliable capacitive touch sensor designed to replace mechanical buttons with a simple touch interface. Featuring a red LED indicator, this module provides single-touch detection with digital output, making it easy to interface with microcontrollers such as Arduino, ESP32, ESP8266, and Raspberry Pi.
It operates at a wide voltage range (2V–5.5V) and is highly responsive, requiring only a light touch to trigger the output. Its mini size allows it to be integrated into DIY electronics, touch-activated lights, home automation systems, and interactive projects.
The TTP223 module provides stable performance, low power consumption, and easy wiring, making it ideal for both beginners and advanced electronics enthusiasts.
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Text to Speech TTL Module (Serial to Speech)
-  Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Â Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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 Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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 Voice effect optimization
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 Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes
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