Specification :

This Adjustable Cell phone Jammer with Remote Control can be used in any place that is not allowed for using cell phone ( by the signal of CDMA, DCS, PHC, 3G, GSM) .
The valid Frequency for this product, please check specification below.

Features
Cover interface standards: Digital : IDEN, TDMA, CDMA, GSM, UMTS
Analog: AMPS, NMT, N-AMPS, TACS
Total output power: 8W ( CDMA800: 2W, GSM900: 2W, 1805-1990: 2W, 2100-2200: 2W)
Signal Source PLL synthesized
Antennas External Omnidirectional
Every band frequency can select output power
All the TX frequency covered down link only.
Automatic power switching power supply: 50 / 60 Hz / AC 100 ~ 240V