IW2 transforms most any flat surface – including walls and soft projector screens – into an interactive whiteboard for learning and presentations. And with the convenience of wireless operation – with no Wi-Fi required! – it offers a dynamic new level of multimedia interaction for lessons and presentations. IW2 is made up of three devices: the Interactive Pen, the Sensor Cam, and the Wireless Receiver. The Sensor Cam reads infrared signals emitted by the Pen and sends that information wirelessly to the Receiver, which is plugged into your computer’s USB port. The Pen’s motion – as well as button presses – are translated into cursor movements, mouse clicks, and mouse drags. And because infrared is the same technology used in many wireless mouses, no Wi-Fi is required. IW2 just works! Sensor Cam Specs - Effective Board Area: Up to 100” - Effective Distance (to Board): Up to 20 ft (600cm) - Power Supply: DC Adapter (Input Rating 5V/2A) - Dimensions: 3.78” x 1.73” x 0.85” (96 x 44 x 21.5 mm) (folded) - Weight: 3.7oz (106g) Interactive Pen Speca - IR Trigger: Contact Sensitive Tip or Button Press - Battery Type: 2 AAA (Alkaline Battery) - Dimensions (with Wireless Receiver): 8.54” x 0.79” x 0.91” (217 x 20 x 23 mm) - Weight (with batteries): 2.5oz (70g) - Operation Temperature: 32~104°F (0~40℃) Wireless Receiver Specs - Wireless Receiver is powered by USB connection (Input Rating 5V/0.5A) - Operation Temperature: 32~104°F (0~40℃)