Versatile Sensor Node (VSN) is a high performance sensor network platform with modular structure, long-life autonomy and flexible radio. Wireless interface spans over several industrial, scientific and medical frequency bands and supports multiple communication technologies, including ZigBee, 6LoWPAN, Bluetooth and WiFi. Various sensors and actuators can be connected via digital and analog peripherals, which makes VSN adaptable to diverse application requirements. By supporting semantic technologies and intelligent machine learning algorithms it provides a transparent infrastructure in which sensors are offered as a service.