18 b20 temperature sensor This product adopts the DALLAS company production of DS18B20 digital temperature sensor networking chip packaging, fastness with touch, small volume, easy to use, packaging forms, suitable for all kinds of small space equipment digital temperature test control field. Technical performance description: Unique way of single wire interface, DS18B20 in connected with the microprocessor need a mouth line can be realized only when the microprocessor and the DS18B20 two-way communication; Temperature measurement range: 55 ¡æ ~ + 125 ¡æ, the inherent temperature measuring resolution 0.5 ¡æ; Support more networking function, multiple DS18B20 can parallel in only three lines, only eight in parallel, if the quantity is too much can make the power supply voltage is too low, causing the instability of signal transmission, realize multi-point temperature measurement; Working power supply: 3 ~ 5 v/DC; Don't need any peripheral devices in use; Measurement results in 9 ~ 12 digital quantity way serial transmission; PVC cable directly to qualify or German type spherical junction box, easy connection with other electrical equipment. Scope of application: The product is suitable for use in the freezer, silos, storage tank, the telecommunications room, power room, such as cable trough test control areas; Bearing, cylinder, textile machinery, air conditioning, narrow space such as industrial equipment test control; Automobile air conditioners, refrigerators, freezers, as well as in the low temperature drying oven, etc; Heating/cooling pipe heat metering and central air conditioning temperature test control household heat metering and industrial field. Product type and specification: Model measuring temperature range thread cable length for piping installation
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