1. Product Functions 1)with automatic detection function,the host is portable,when in the environment with eavesdropping device,pinhole camera. 2)with a signal strength indicating light,can quickly find the source of the signal. 3)the adjustment function button can adjust the sensitivity. Increase sensitivity to increase decetion range or decrease sensitivity to shorten. 2. Applicable people: 4)People who often go to public entertainment places for cousumption; 5)People who often go to various shopping malls to try on clothes; 6)respect their own personal stability and stability of others; 7)Persons who have access to and custody of trade secrets; 8)Security personnel in places with trade secrets and technical secrets; 9)Anti-candid,anti-eavesdropping professionals. 3. Scope of application: -Detect whether your car or office is installed wireless eavesdropper,wireless eavesdropper. -Detect whether the phone is eavesdropping or abnormal(it sends out signals for no reason when it is in standby mode). -Detect whether your car is fitted with GPS tracking,GPS loction tracker. -Detect mobile phone message receiving and receiving signal,moblie phone internet access signal,mobile phone switch and call signal. -Detect the field strength of wireless network signal,mobile phone base station signal and wireless monitoring system. -Check hotel,washroom,guesthouse,entertainment place,changing room to prevent wireless camera. -Business negotiations,factories,military installation or government offices. 4. Charging [ Indicatorlnsert the data line in the box into the instrument and connect it to the charger. When chargingthe red light will be long and the yellow light will be long when fully charged.]