WLAN ANTENNA EXTENSION Ambient conditions are not always ideal for a WLAN connection between an inverter and a router. For example, drywall can impair wireless signals significantly, or the inverter might not send its signals correctly because of an installation location that cannot be changed. In this case, simply use the external WLAN antenna extension to increase range even in poor ambient conditions and to ensure a reliable connection with your router. This part is buy to order. Please speak to your Account Manager to discuss availability and lead time.