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HC-SR501 PIR Motion Detector Sensor module
PIR motion detector sensor HC-SR501 with adjustable sensitivity and digital output. Perfect for security, automation, and DIY projects.
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Tag: HC-SR501 PIR Motion Detector Sensor module
Description
The HC-SR501 PIR Motion Detector Sensor Module is a highly reliable sensor designed to detect human motion using passive infrared (PIR) technology. It provides digital output that can easily interface with Arduino, Raspberry Pi, and other microcontrollers. With adjustable sensitivity and time delay, it is ideal for security systems, automatic lighting, robotics, and DIY home automation projects. Compact, energy-efficient, and easy to install, this module ensures accurate motion detection for both hobbyists and professional applications.
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Mini Portable Virtual Laser Projection Keyboard and Mouse Wireless Bluetooth
- Compatible with Android, iOS, Windows and Mac all kinds of operation systems that can be used with any phone, tablet, PC and laptop for a smooth and fast way of text input.
- Built-in Bluetooth for connecting to other devices without complex wired troubles
- More stable and smarter
- Can change the mini USB port to micro USB port.Â
- With mini Bluetooth speakers, which support voice reporting and music playing
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- Good touch sensitivity
- The BEEP sound and brightness can be adjusted on the laser keyboard
Potentiometer Sensor Module
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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