PC Lock

Function :1. Effective range: 2 meters.2. The computer automatically enters " LOCK MODE"    when the user is away from computer by more    than an effective .3. The computer automativally resumes normal     operation when the user is back within an effective range.4. Once the computer enters lock mode , a password is required to use the computer , if the thransmitter / receiver pair is not available to unlockthe computer .5. one transmitter can be shared with several computer .