How does WXT520 differ from WXT510?

WXT520 has several improvements such as:

• Transmitter housings with a mounting kit have an upgraded IP classification IP66
• EMC tolerance is higher, which allows the transmitter to be used in more severe conditions (ship installations, buoys, coastal areas and harbors, windmills, high masts, and with long cables in the field)
• A Bird Spike Kit has been added to deter birds from the transmitters
• A USB connection facilitates a PC connection for a service connector (M8), and also when the PC is used as a terminal device
• The new Vaisala Surge Protector WSP152 protects the host against surges that may enter through the USB connection
• WXT520 is completely ROHS compliant