Thermal Sensor Module 3/4Pin Temperature Switch Sensor Module Temperature Change DetectionItem NO.: Thermal Sensor

Thermal Sensor Module 3/4Pin

Purpose:

Temperature detection, temperature control sensor, ambient temperature detection

Module Features:

1. Adopting NTC thermistor sensor with good sensitivity

2. Comparator output, clean signal, good waveform, strong driving ability, exceeding 15mA.

3. Equipped with potentiometer to adjust the temperature detection threshold

4. Working voltage 3.3V-5V

5. Output form: DO digital switch output (0 and 1) and AO analog voltage output

6. Equipped with fixed bolt holes for easy installation

7. Small PCB size: 3.2cm x 1.4cm

8. Using a wide voltage LM393 comparator

Module Interface Description (3-Wire System):

1. VCC: Connected to the positive pole of the power supply (3-5 V)

2. GND: Connected to the negative pole of the power supply

3. DO: TTL switch signal output

Module Interface Description (4-Wire System):

1 VCC external 3.3V-5V

2 GND external GND

3 DO small board switch digital output interface (0 and 1)

4 AO small board analog output interface

Module Usage Instructions:

1. The thermistor module is very sensitive to environmental temperature and is generally used to detect the temperature of the surrounding environment;

2. By adjusting the potentiometer, you can change the temperature detection threshold (that is, the control temperature value). If you need to control the ambient temperature to 50 degrees, the module will turn on its green light when the corresponding ambient temperature is adjusted, and the DO will output a low level. When the temperature is lower than this set value, it will output a high level, but the green light will not turn on;

3. The DO output terminal can be directly connected to a microcontroller, which detects high and low levels to detect temperature changes in the environment;

4. The DO output terminal 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 for heat dissipation, etc;

5. The temperature detection range of this module is 20-80 degrees Celsius;

6. This module can also be replaced with a wired temperature sensor for controlling water temperature, water tank, etc

7. The analog output AO of the small board can be connected to the AD module of our store, and through AD conversion, more accurate values of environmental temperature can be obtained