1 Slow start function
After the shield is energized, the working power rises from zero to stable within 4 seconds.
2 Shield function
After the activation is completed, the mobile phones within the range are blocked for 35 seconds.
Basic performance:
Transmission frequency range: 860-960MHZ 1.800-1.990GHZ
Function frequency band: CDMA800, GSM900, DCS1800, PCS1900, PHS.
Control range: about 40 meters.
