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TTP223B 1-Way Capacitive Touch Switch module
TTP223B 1-way capacitive touch switch module with digital output—perfect for touch-activated switches, home automation, and DIY electronics projects.
The TTP223B 1-Way Capacitive Touch Switch Module is a compact and reliable sensor designed to replace traditional mechanical switches with a touch-sensitive interface. It features a single-touch input that provides a digital output, allowing it to easily interface with microcontrollers such as Arduino, ESP32, ESP8266, and Raspberry Pi.
Operating at a wide voltage range (2V–5.5V), the module is highly responsive and requires only a light touch to trigger. Its small form factor makes it ideal for touch-activated lights, home automation, DIY electronics, and interactive projects. The TTP223B module offers low power consumption, stable performance, and easy integration, making it suitable for both beginners and advanced electronics projects.

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- Working current: matching for 30 mA, matching the communication for 8 mA.
- Dormancy current: no dormancy.
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- Bluetooth protocol: Bluetooth Specification v2.0+EDR
- Speed: Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps.
- Security: Authentication and encryption.
- Profiles: Bluetooth serial port.
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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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