certifications updated

Author: mcmchris

content/hardware/07.opta/opta-family/opta-analog-exp/product.md

@@ -7,7 +7,7 @@ primary_button_title:  User Manual
 secondary_button_url: /tutorials/opta/opta-expansions-plc-ide
 secondary_button_title: Opta Expansions with PLC IDE
 core: arduino:mbed_opta
-certifications: [FCC, CE, UKCA]
+certifications: [FCC, CE, UKCA, cULus, ENEC]
 ---
 
 The **Arduino Opta® Analog Expansion** is a plug-and-play extension to the **Opta® PLC Controller** that expands its capabilities with more **inputs** with multiple functions such as digital, analog voltage, analog current or temperature and more **outputs** with analog voltage, analog current and PWM functionalities. Fully compatible with the Arduino Ecosystem.