"PowerStream has the largest selection of in-stock lithium polymer cells for product development in the world."

The one I use.

"Silver cells may have very stable output voltage until it suddenly drops very rapidly at end of life. This varies for individual types; one manufacturer (Energizer) offers 3 silver oxide cells of the same size, 357-303, 357-303H,and EPX76, with capacities ranging from 150 to 200 mAh, voltage characteristics ranging from gradually reducing to fairly constant, and some stated to be for continuous low drain with high pulse on demand, others for photo use."

Owned by Libelium.

Press release: http://www.sensor-networks.org/index.php?page=0932832814

"There are two main ways of performing outdoor location when tracking sensor devices in a large area such as a city. The most extended is using a GPS module to get the information sent by the satellites on the 1575MHz band and extract all the information possible (latitude, longitude, speed, direction). However, this methodology is not effective when requiring mobile scenarios where the nodes can change from a clear environment to an indoor one, such as going inside buildings, garages and tunnels.
[...]
...we center on how to track mobile sensor nodes which are moving through a huge area.
[...]
Both GPS and GPRS technologies are complementaries as a system with both technologies allows to track the position inside buildings, garages, and even inside tunnels (eg. subway railway system) while maintaining an accurate precission in a clear environment where the information from the GPS satellites can reach the sensor device.
[...]
The GPS module uses the A1084 GPS demodulator by Vincotech:
[...]
Let's see now how extract the information from the GPRS module in order to use it to track the sensor device position according the Cell ID's location and strength of the signal received (RSSI). [...] The GPRS module integrated in Waspmote is the model HiLo by Sagem. As it is Quadband it can operate with any operator from any country: [...] All the needed parameters: Received Signal Strength Indicator (RSSI), Cell ID and Timing Advance (TA) of the Base Station are accessible directly from the Waspmote API. [...] ...we will obtain information about the 8 closest Base stations (BT's) surrounding to our node. [...] As we can see, we obtain the RSSI, Cell ID and TA from each BT's detected around the node. These three parameters which we will use in order to calculate the location of our node. The RSSI parameter returned specifies the received signal level of the BCCH carrier. It can be used to know the link quality and locate a node using triangulation. The Cell ID parameter may be used to identify each BT's and be able to triangulate the signal and locate a node. The TA parameter is very useful as the BTS sends this information to each node according to the perceived round trip propagation delay BTS-node-BTS. So, to know the distance between the node and the base station you have to use this equation : Distance = (TA/2)x 3.6µs x C"

"There are two kinds of sensor nodes used in the sensor network. One is the normal sensor node deployed to sense the phenomena and the other is gateway node that interfaces sensor network to the external world."

CPU is "MSP430 F 1612" and radio is "CC1100".

Its dimensions are 36mm x 41mm or so. It goes for ~120 EUR. (Numbers taken from the older model's page: http://www.scatterweb.com/content/products/research_line/msb430.en.html)

"Optional: GSM/GPRS"
——
This is the link between the sensor network (comprised of ScatterNodes: http://www.scatterweb.com/content/products/technology/scatternode.en.html) and the BSS.

This is the same product as the one found here: http://www.scatterweb.com/content/products/technology/scattergate.en.html

"While the Moteiv Tmote product line and early devices like Tmote Sky launched the age of pervasive computing, we see the truly transformational innovations lie in software. We encourage you to consider our platform as you explore the opportunities that will surely follow."

It's got a range of 1,8km (line-of-sight) at 1.2kbps.

"Hardware platforms targeting sensor networks listed in alphabetical order."

Very-very handy.

XBOW's company blog; rarely updated.