Spesifikasi: Laser Button : Laser on/off control Page Up Button : Slide down control Page Down Button : Slide Up control Lock/Unlock Switch : To change battey LED Indikator Bliking : Connected and waiting for ID Off : ID received and waiting for Command Off-On-Off: Every time command received Installation and Usage 1. Plug the Receiver USB port. 2. Then the LED indicator will start to blink. 3. Push either the Page down orPage up button for 1-2 seconds. The LED indikator will turn off. 4. Begin your Power Point presentation Ready Stock !!