It is a wireless presenter as a remote control , a laser pointer and portable storage device . It is tailored as a handytool for presentations , teaching ,meetings ,speeches ,trainings .It consists of two parts: transmitter and USB receiver.I. Setup :Plug the receiver into the USB port on your PC .The system will automatically search for the new hardware and complete the setup.(Attention : you may need Win98 disk if your computer runs under Win98/SE operating system...PLS keep clear away of and objects which are in front of receiver between 45 radius. ) II. Function : 1.Button Laser pointer. 2.Button page/scroll up function. 3. Button page/scroll down function.III．Technical parametersTransmitterClassClass IIClass IIITechnologyInfrared FrequencyInfrared FrequencyControl distance 15m 15mLaser distance 200m 200mBatteryCells button *3Cells button *3Working voltage3V3VSleep current1uA1uAWavelength650nm650nmMax output 1mW 5mWDimensionL=14.7cm =1.4cmL=14.7cm =1.4cmTransmitterOperation systemWindows98．Se．Me．2000．XP． Mac OS．LinuxCompatible plugUSB 1.1Working voltage3VIV．Warning:To avoid the laser radiation to direct eyes ! 电子激光教鞭厂家直销，价格优惠。品质保证。