Tech specs update

Author: mcmchris

content/hardware/07.opta/opta-family/opta/tech-specs.yml

@@ -20,16 +20,17 @@ Relays:
   Relay maximum switching voltage: 400 VAC
   Maximum current per relay: 10 A
   Maximum peak current per relay: 15 A
-Connectivity:
-  USB Programming Port: Yes
-  Ethernet:
-    TCP/IP: Yes
-    ModBus TCP: Yes
-  Bluetooth® Low Energy: Arduino Opta® WiFi Only
-  Wi-Fi®: Arduino Opta® WiFi Only
-Communication interfaces:
-  RS-485: Arduino Opta® RS485 & Arduino Opta® WiFi Only
-  Programmable Serial ports: RS-485
+Connectivity and communication:
+  USB-C®: 
+    For programming and data logging: All variants
+  Ethernet: 
+    TCP/IP or Modbus TCP: All variants
+  Bluetooth® Low Energy: 
+    Local sensor data acquisition: Arduino Opta® WiFi Only
+  Wi-Fi®:
+    Network connectivity: Arduino Opta® WiFi Only
+  RS-485: 
+    Modbus RTU: Arduino Opta® RS485 & Arduino Opta® WiFi Only
 Power:
   Input voltage: 12-24 VDC
 Memory: