The Sun Small Programmable Object Technology (SPOT) is new sensor network hardware with full Java support that has been introduced by Sun Microsystems. It is a state-of-the-art WSN platform that provides much more computational power and memory than the previous generations of very limited sensor nodes. The most notable feature of the Sun SPOT platform is that it runs Java as its native programming language on bare metal. This allows sophisticated algorithms to be implemented on the sensors nodes easily.A wireless sensor network (WSN) is a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants, at different locations.Sun Small Programmable Object Technology is a wireless sensor network (WSN) mote (an electronic communication device meant to be the size of a particle of dust). The device is built upon the IEEE 802.15.4 standard. Unlike other available mote systems, the Sun SPOT is built on the Squawk virtual machine.