Waspmote vs Waspmote Plug & Sense

Waspmote is the original line in which developers have a total control over the hardware device. You can physically access to the board and connect new sensors or even embed it in your own products as an electronic sensor device.
The Waspmote Plug & Sense! line allows developers to forget about electronics and focus on services and applications. You can deploy wireless sensor networks in an easy and scalable way ensuring minimum maintenance costs. The platform consists of a robust waterproof enclosure with specific external sockets to connect the sensors, the solar panel, the antenna and even the USB cable in order to reprogram the node. It has been specially designed to be scalable, easy to deploy and maintain.
Figure: Waspmote / Plug & Sense!