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Operating temperature: -40°C to +85°C
R305 Optical Fingerprint Sensor Module — UART Interface
For Arduino
Or simply send low baud pwm coded message to a Red/IR LED/receiver
HTC-2 Indoor Room Digital Thermometer ESP8266 Operating temperature: -40°C to +85°CThe HTC 2 Indoor Room Digital Thermometer is a reliable and accurate device designed for monitoring temperature levels in indoor environments. Whether you're at home, in the office, or any other indoor space, this digital thermometer provides real time temperature readings with precision and ease of use. Its compact and sleek design makes it a seamless addition to any room, allowing you to keep a close eye on the ambient temperature for optimal
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