note added

Author: mcmchris

content/hardware/07.opta/opta-family/opta/tutorials/18.smart-compressor-app-note/content.md

@@ -68,9 +68,11 @@ The Opta PLC will be powered with an external 24 VDC power supply connected to i
 
 The current, temperature and pressure sensors will be connected to inputs `I1`, `I2` and `I3` respectively.
 
-![Pressure Sensor](assets/pressure-sensor.png)
-![Temperature Sensor](assets/temp-sensor.png)
-![Current Sensor](assets/current-sensor.png)
+![Pressure Sensor Connection](assets/pressure-sensor.png)
+![Temperature Sensor Connection](assets/temp-sensor.png)
+![Current Sensor Connection](assets/current-sensor.png)
+
+***The sensor connections shown above are separated for an easier understanding but all of them are simultaneously connected to the Opta.***
 
 The compressor power source will be wired through the Opta relay contact 1 and the current sensor.