We demonstrate a tool to inspect nodes of a deployed wireless sensor network 
(WSN) in the field. While an operational WSN can be remotely monitored via 
multi-hop routing, a newly deployed network often does not work as expected 
(e.g., multi-routing is broken). Here the developer needs to inspect single 
nodes in the field, carrying along necessary tools such as laptop and 
multi-meter. An in-field inspection tool on a compact device does not only 
simplify the process of collecting information about the nodes? state but also 
enables the actual users of the WSN to perform routine checks or to upload new 
firmware versions. Our tool running on a standard PDA allows to: * Re-task 
nodes by uploading a new firmware image * Query system and application 
specific attributes * Display the topology of the network and execute commands 
on nodes We will first provide an overview on the hard- and software of our 
prototype, then assess how sensor nodes can be accessed and selected for 
inspection. Finally, we will give a brief description of the provided services 
and mention related work.