diff --git a/Practical/Assignment-4/IoT - Code-4.py b/Practical/Assignment-4/IoT - Code-4.py
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+"""
+THIS CODE HAS BEEN TESTED ON RASPBERRY PI 3B, 4B AND IS FULLY OPERATIONAL.
+
+Problem Statement: Temperature and humidity sensing using DHT11.
+
+Code from InternetOfThingsAndEmbeddedSystems (SPPU - Third Year - Computer Engineering - Content) repository on KSKA Git: https://git.kska.io/sppu-te-comp-content/InternetOfThingsAndEmbeddedSystems
+"""
+
+# BEGINNING OF CODE
+# NOTE: GPIO PIN 16 used
+
+import RPi.GPIO as GPIO
+import dht11
+import time
+
+# initialize GPIO
+GPIO.setwarnings(False)
+GPIO.setmode(GPIO.BCM)
+GPIO.cleanup()
+
+try:
+  while True:
+    # read data using pin 16
+    instance = dht11.DHT11(pin = 16)
+    result = instance.read()
+
+    if result.is_valid():
+      print("Temperature: %-3.1f C" % result.temperature)
+      print("Humidity: %-3.1f %%" % result.humidity)
+    else:
+      print("Error: %d" % result.error_code)
+    time.sleep(3)
+except KeyboardInterrupt:
+  print("Program stopped by user.")
+  GPIO.cleanup()
+# END OF CODE
diff --git a/Practical/Assignment-4/IoT - Softcopy-4.pdf b/Practical/Assignment-4/IoT - Softcopy-4.pdf
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