2 Aeotec Z-Stick Series 2 Z-Wave USB dongle
http://www.kiwi-electronics.nl/aeon-labs-z-wave-usb-adapter-met-batterij-z-stick-series-2
http://www.robbshop.nl/aeon-labs-usb-adapter-op-batterijen
http://www.hashop.nl/Webwinkel-Product-12206926/Aeon-Labs-Z-Stick-II.html
http://www.domotica-shop.nl/aeon-labs-z-stick-z-wave-usb-stick-versie-2-p-16312.html