Long IR pens for portable interactive whiteboard writing low price multimedia teaching device

Product Overview

Description

Specifications

Light Emitted: Infrared

Pen Tip Trigger Switch: Button activated

Control Buttons: 1 button

Power Requirement: Battery AAAx2

Working Current: 40-50 milliamp

Pen Body Dimension: 41.5-60cm(length); 14 mm (diameter)

Weight: 55g (exclude battery)

Wave length:  L20    850nm

                       L25   940nm