Thermistors are a kind of sensitive elements, which can be divided into positive temperature coefficient thermistor (PTC) and negative temperature coefficient thermistor (NTC) according to the difference of temperature coefficient. The typical characteristic of thermistor is that it is sensitive to temperature and shows different resistance values at different temperatures. The resistance of positive temperature coefficient thermistor (PTC) increases with the increase of temperature, while the resistance of negative temperature coefficient thermistor (NTC) decreases with the increase of temperature. They both belong to semiconductor devices.
Instructions:
(1) The thermistor module is very sensitive to the ambient temperature and is generally used to detect the temperature of the surrounding environment.
(2) By adjusting the potentiometer, the threshold value of temperature detection (that is, the control temperature value) can be changed. if the ambient temperature needs to be controlled at 50 degrees, the module will turn on the green light when the corresponding ambient temperature is set to 50 degrees, and the DO will output high level. when it is lower than this set temperature value, the output level will be high and the green light will not be on.
(3) The output terminal of DO can be directly connected with single-chip microcomputer, and the high and low level can be detected by single-chip microcomputer, so as to detect the temperature change of the environment.
(4) The output terminal of DO can directly drive the relay module of our store, which can form a temperature control switch to control the working temperature of related equipment, and can also be connected to a fan to dissipate heat.
(5) The temperature detection range of this module is 20-80 degrees Celsius.
(6) This module can also be replaced with a temperature sensor with a line, which can be used to control water temperature, water tank and so on.
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advantage:
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(noted:Not bear any fee and tax of the transportation cost.)
