Product Name: Omin Antennas Handheld Signale Jammer Output Power: 2.5W Power Supply: 110-220VAC InternalBattery: 2000mAh Rechargeable Lithium-Ion (LI-ION) Dimensions: 119*74*32mm Net Weight: 0.4kgs Antennas: 5pcs Small Omni Antennas Color: Black/Golden 5 Bands 2.5W 27dBm portable phone signal Blocker , Handheld Signale Jammer for TDMA , CDMA , GSM , UMTS , DCS Product Introduction: This is a great signal blocker model that can easily be concealed in the pocket. Just like a phone. which is up to three hours of continuous use on a single charge. There are two possible ways to charge this handheld sized device On the go? There's the car charger. Staying in a hotel room? You can use the outlet. When the green light turns on, 1 -10meters around the device will jam the your select four signals, and it's lightweight enough for those who are always on the move to barely notice the weight in their pockets. Product Fetures: Compact size - easily put in the bag or purse Built in rechargeable lithium battery Can be charged by AC adapter or car charger Frequency selectable No harm to human body or other electronic devices Product Applications: Confidential conferences rooms, Private offices, Police authorities, Buses Taxies, Etc. Product Specification: Jamming Frequency Ranges:5 working Bands Selectable of Jamming iDEN , TDMA , CDMA , GSM , UMTS , DCS , PCS , 3G , 4G , AMPS , N-AMPS , NMT , TACS , WIFI , BULETOOTH , LOJACK , GPS , etc. RF output power: up to 2.5W Power Consumption: 7.5W; Jamming Radius: 1 to 10 meters depending on the environment signal strength Antennas: 5pcs small omni antennas Power Supply : 110-220VAC, Car adapter, or Built-in rechargeable Lithium-Ion (LI-ION) battery InternalBattery: 2000mAh rechargeable Lithium-Ion (LI-ION) Battery Working Hours: 2-3 hours Dimensions: 119*74*32mm Net Weight: 0.4kgs Band Frequence Range Average Output Power CH1 CDMA/GSM:860-970 MHz 27dBm CH2 3G:2110-2170 MHz 27dBm CH3 DCS/PHS:1805-1930 MHz 27dBm CH4 WIFI:2400-2500 MHz 27dBm CH5 GPS:1570-1580 MHz 27dBm Size 110*62*30mm Weight 0.4kg Output power 2.5W Power Supply AC110-250V/DC +12V Woking Temperature -40-50℃ Relative Humidity 30-80% Jamming Signal 2G/3G/WIFI/GPS Jamming Range 1-10m Output Port Five Ports Changeable Signal GPS/VHF/UHF Product Image: FAQ: Why is there still a signal on the phone's signal indicator when it works? A: It's just an illusion.In fact, the mobile phone has been unable to communicate.When you press the pull button, you will find that there is no signal on the signal indicator.The cell phone signal shield will not interfere with the normal work of other electronic devices. The antenna should be installed on the corresponding signs of each channel on the host, and then connected to the host power supply. The effective coverage of the shield is a circular area centered around the shield, so be careful to choose the location of the shield so as to avoid blocking the dead Angle? A: No.This is because the electromagnetic signal emitted by the cell phone's signal shield is completely within the country's mobile operating band, which only blocks mobile communication.And this signal is always in a relatively static state, and will not affect any electronic equipment. Are cell phone signal Jammer harmful to people and mobile phones? A: Please rest assured that the electromagnetic signal intensity emitted by the cell phone signal Jammer is very weak. The test data indicates that this signal strength is far from harmful to the human body.At the same time, the mobile phone signal shield is just blocking the forward signal of the phone, so that the cell phone cannot be connected with the base station, so there will be no damage to the phone itself. Is there any difference between the effective shielding distance of the mobile phone signal shield in indoor and outdoor use? A: There are.The effective shielding distance (30-40 meters) of the cell phone signal shield is generally referred to as indoor distance.In open areas, the effective distance of shielding can be several hundred meters.It should be noted, whether they are within the room, or in outdoor use, effective shielding effect of shielding distance has relationship with environmental conditions, such as from the base station near and far, placed, etc.Therefore, when using cell phone signal shield, this factor should be fully taken into account to avoid blocking the dead Angle and thus affect the shielding effect. Is the cellular signal shield the same for GSM mobile phones and CDMA mobile phones? A: that's a good question.Because CDMA mobile phone's anti-interference performance is far superior to that of GSM mobile phone, the effective shielding distance for CDMA mobile phone is smaller than that of GSM mobile phone, but the difference is not very large, about 2-4 meters.But it also reminds users to pay attention to some particularly important sites, and should increase the number of mobile phone signal blockers when necessary to ensure the shielding effect of CDMA mobile phones. After working for a period of time, the mobile phone signal mask is hot. Will working long hours damage the machine? A: thank you for your care. This is a normal phenomenon.In the design, we use the thermal conductivity of aluminum alloy to assist the heat dissipation.This can guarantee long time stable work.As a result, the machine will not damage the machine.