* Detected concealed powered off cellphone when carrier
pass through -Dipole Gate.
* Can be used at fixed location or portable with battery.
* Consume very little energy.
* A fully charged power bank can support -system for
more than 18 hours.
* Light weight handled device can detect powered off cellphone
--- up to 10 cm in distance.
* Rechargeable lithium battery can support device for up to
24 hours.
* Beeper pitch goes high when cellphone is in distance.
