Kan ju bli intressant..

1. power supply voltage: 3V-12V;
2. sensing distance: 1M(max);
3. PCB board size: 2.2cm*2.8cm;
4. range of application: mobile phone GSM signal.It is useless
for PHS, fixed-line telephone,CDMA mobile phone.
5. time of application: calling or In a call ;