{"id":52614,"date":"2017-04-10T02:00:53","date_gmt":"2017-04-10T01:00:53","guid":{"rendered":"https:\/\/www.microplanet.ma\/?post_type=product&#038;p=52614"},"modified":"2026-10-19T16:25:01","modified_gmt":"2026-10-19T16:25:01","slug":"ky-028-thermistor-temperature-sensor-module","status":"publish","type":"product","link":"https:\/\/www.microplanet.ma\/en\/produit\/ky-028-thermistor-temperature-sensor-module\/","title":{"rendered":"KY-028 Thermistor Temperature Sensor Module"},"content":{"rendered":"<h3>KY-028 Thermistor Temperature Sensor Module<\/h3>\n<p>The KY-028 uses an NTC thermistor to respond to temperature changes. Its LM393 comparator compares the thermistor signal with an adjustable reference set by the onboard 3296W potentiometer and provides a digital output for microcontrollers such as Arduino.<\/p>\n<h4>Specifications<\/h4>\n<ul>\n<li><strong>Temperature range:<\/strong> \u221255 \u00b0C to +125 \u00b0C (as stated in the source listing)<\/li>\n<li><strong>Accuracy:<\/strong> \u00b10.5 \u00b0C (as stated in the source listing)<\/li>\n<li><strong>Operating voltage:<\/strong> 3.3\u20135.5 V<\/li>\n<li><strong>Output:<\/strong> digital D0<\/li>\n<li><strong>Dimensions:<\/strong> 36 \u00d7 15 mm<\/li>\n<li><strong>Main components:<\/strong> NTC thermistor, LM393 comparator and 3296W potentiometer<\/li>\n<\/ul>\n<h4>How it works<\/h4>\n<p>The NTC thermistor\u2019s resistance decreases as temperature rises. The LM393 compares the sensor level with the potentiometer-adjusted reference and switches the digital output HIGH or LOW. The potentiometer sets the switching threshold; this module\u2019s digital output indicates a threshold crossing rather than providing a calibrated temperature reading.<\/p>\n<h4>Applications<\/h4>\n<ul>\n<li>Temperature-threshold indicators<\/li>\n<li>Climate-control projects<\/li>\n<li>Educational electronics<\/li>\n<li>Home-automation projects<\/li>\n<\/ul>\n<h4>Pinout<\/h4>\n<ul>\n<li><strong>VCC:<\/strong> 3.3\u20135 V supply<\/li>\n<li><strong>GND:<\/strong> ground<\/li>\n<li><strong>D0:<\/strong> digital output<\/li>\n<\/ul>\n<h4>Using it with Arduino Uno<\/h4>\n<h5>Basic Arduino example<\/h5>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-cpp\" data-lang=\"C++\"><code>const int ledPin = 13; \/\/ LED sur la carte Arduino\r\nconst int digitalPin = 2; \/\/ Sortie num\u00e9rique du capteur KY-028\r\nint digitalVal; \/\/ valeurs num\u00e9riques\r\n\r\n\r\nvoid setup() {\r\n\u00a0 pinMode(ledPin, OUTPUT);\r\n\u00a0 pinMode(digitalPin, INPUT);\r\n\u00a0 Serial.begin(9600);\r\n}\r\n\r\n\r\nvoid loop() {\r\n\u00a0 digitalVal = digitalRead(digitalPin);\u00a0\r\n\r\n\r\n\u00a0 if(digitalVal == HIGH) {\r\n\u00a0 \u00a0 digitalWrite(ledPin, HIGH);\r\n\u00a0 } else {\r\n\u00a0 \u00a0 digitalWrite(ledPin, LOW);\r\n\u00a0 }\r\n\r\n\r\n\u00a0 Serial.println(digitalVal);\r\n\u00a0 delay(100);\r\n}<\/code><\/pre>\n<\/div>\n<p>The basic example reads D0, turns the Arduino\u2019s built-in LED on when the module\u2019s digital threshold is triggered, and reports the reading in the serial monitor.<\/p>\n<h5>Advanced example with I2C LCD<\/h5>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-cpp\" data-lang=\"C++\"><code>#include &lt;Wire.h&gt;\r\n#include &lt;LiquidCrystal_I2C.h&gt;\r\n\r\n\r\nconst int ledPin = 13;\r\nconst int digitalPin = 2;\r\n\r\n\r\nLiquidCrystal_I2C lcd(0x27, 16, 2);\r\n\r\n\r\nvoid setup() {\r\n\u00a0 pinMode(ledPin, OUTPUT);\r\n\u00a0 pinMode(digitalPin, INPUT);\r\n\u00a0 Serial.begin(9600);\r\n\u00a0 lcd.begin();\r\n\u00a0 lcd.backlight();\r\n}\r\n\r\n\r\nvoid loop() {\r\n\u00a0 int digitalVal = digitalRead(digitalPin);\r\n\r\n\r\n\u00a0 if(digitalVal == HIGH) {\r\n\u00a0 \u00a0 digitalWrite(ledPin, HIGH);\r\n\u00a0 \u00a0 lcd.setCursor(0, 0);\r\n\u00a0 \u00a0 lcd.print(\"Temperature High\");\r\n\u00a0 } else {\r\n\u00a0 \u00a0 digitalWrite(ledPin, LOW);\r\n\u00a0 \u00a0 lcd.setCursor(0, 0);\r\n\u00a0 \u00a0 lcd.print(\"Temperature Low \");\r\n\u00a0 }\r\n\r\n\r\n\u00a0 Serial.println(digitalVal);\r\n\u00a0 delay(1000);\r\n}<\/code><\/pre>\n<\/div>\n<h5>Advanced-example wiring<\/h5>\n<ul>\n<li><strong>KY-028 VCC:<\/strong> Arduino 5 V<\/li>\n<li><strong>KY-028 GND:<\/strong> Arduino GND<\/li>\n<li><strong>KY-028 D0:<\/strong> Arduino digital pin 2<\/li>\n<li><strong>LCD VCC\/GND:<\/strong> Arduino 5 V\/GND<\/li>\n<li><strong>LCD SCL\/SDA:<\/strong> Arduino A5\/A4<\/li>\n<\/ul>\n<h4>Library installation<\/h4>\n<ol>\n<li>In the Arduino IDE, open <strong>Sketch \u2192 Include Library \u2192 Manage Libraries<\/strong>.<\/li>\n<li>Search for and install <code>LiquidCrystal_I2C<\/code> for the LCD example.<\/li>\n<\/ol>\n<p><small>Keywords: KY-028 thermistor module, NTC temperature sensor, LM393 temperature switch, Arduino temperature threshold sensor.<\/small><\/p>\n","protected":false},"excerpt":{"rendered":"<p>KY-028 NTC thermistor module with LM393 comparator, adjustable switching threshold and Arduino examples.<\/p>\n","protected":false},"featured_media":52616,"template":"","meta":[],"product_brand":[],"product_cat":[314,316],"product_tag":[],"class_list":["post-52614","product","type-product","status-publish","has-post-thumbnail","product_cat-developpement-en","product_cat-modules-capteurs-en","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>KY-028 Thermistor Temperature Sensor Module | 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