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50 pcs DS18B20 thermometer temperature sensor dallas
DS18B20 1-Wire Digital Thermometer
The DS18B20 Digital Thermometer provides 9 to 12 bit centigrade temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of 55 C to +125 C and is accurate to 0.5C over the range of 10 C to +85 C. In addition, the DS18B20 can derive power directly from the data line ( parasite power ), eliminating the need for an external power supply. Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1 wire bus; thus, it is simple to use one microprocessor to control many DS18B20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment or machinery, and process monitoring and control systems.
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