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High Temp Waterproof DS18B20 Digital Temperature Sensor [3m long] : ID 3846 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Amazon.com: 1PC Water Temperature Sensor, 1/2NPT Water VDO Temperature Sensor for Oil Water Temperature Temp Gauge, 38℃~120℃ : Automotive
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