Introduction:
The product is the same size as a U disk. You can monitor without the limitation of distance with using a GSM mobile phone cards. Built-in high-capacity lithium battery, you can also plug the product into USB interface of computer and power directly throught the computer for working a long time. The monitor will rechange automatically when turn on the computer; and it will switch to own battery supplying if the computer is shut down. The design of U disk make useful of the detection. The product also uses the advanced German military callback technology. After bingind the master number, the monitor will call your binging master number automatically if there is some sound trigger its voice-activated device. And then it will achieve the monitoring if you answer the call.
The monitor is with 4 bands in really. The voice is processed specially, there will be no any noise when you want to monitor. It can standby for 3 days, and the calling time is 3 to 4 hours.
