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2-wire DC 0.56 inch voltmeter
2-wire DC 0.56-inch voltmeter—compact digital display for monitoring DC voltage in DIY electronics and battery-powered projects.
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Tag: 2-wire DC 0.56 inch voltmeter
Description
The 2-Wire DC 0.56-Inch Voltmeter is a compact and precise digital voltmeter designed for measuring DC voltage in electronic circuits and battery-powered devices. Its 0.56-inch LED display provides clear and easy-to-read voltage readings, making it ideal for small enclosures and portable projects.
This voltmeter operates with a simple 2-wire connection and is suitable for monitoring Arduino projects, DIY battery packs, solar systems, automotive applications, and other low-voltage DC circuits. Its lightweight and durable design ensure long-term reliability in both hobbyist and professional setups.
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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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