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This single channel Relay Module operates at 5V TTL signal and is perfect for common Arduino/Raspberry Pi control applications
the shield works with one or two batteries
compatible with anything that can output a digital 0 to 5V pulse (or 0 to 3
Thermostat circuit with temperature adjustable range between 200 - 450°C (392 - 842°F)
Ultra-stable over temperature and time
PN532 Precision NFC/RFID Controller Mini Robot Chassis This single channel Relay ModuleThe PN532 is the most popular NFC chip, and is what is embedded in pretty much every phone or device that does NFC. It can pretty much do it all, such as read and write to tags and cards, communicate with phones (say for payment processing), and 'act' like a NFC tag. NFC (Near Field Communications) is a way for two devices very close to each other to communicate. Sort of like a very short range bluetooth that doesn't require authentication. It is an
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