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"No transmissions and receptions of cellular phone calls under jamming coverage area!!"
Everyone knows that sparks occur when you switch a mobile phone on and off. If the mobile phone short circuits or the phone is too old, it is possibleto have sparks; since the air in gas stations often has a significant density of the flammable gases, it is very easy to end up igniting gasoline and causing an explosion. The RODMO Mobile Phone Jamming Device immobilizes the telecommunication connection between the mobile phone and the base station returning a peaceful and comfortable environment to you and also ensuring your personal safety. Main Locations: Gas Stations, Oil and Gas Storage Facilities, Oil and Gas Fields, Hospitals, Theatres, Recording Studios, Banks, Contract Tendering Rooms, Churches, Conference Rooms, Classrooms, Testing Facilities, Security Services, Military Units, Secret Services, News Conference Rooms, Libraries, Museums, Prisons, Courts, Border Patrol and Drug Enforcement,Customs,
Houses.
At Present Best Selling Locations: Gas Stations, Gas and Oil Storage, Gas and Oil Fields, Banks, Conference Halls, Contract Bidding Halls, Courts, Courthouses, Military Units, Secret Units.
Has received certification from the National Science and Technology Committee!! All models available, OEM customers are welcome.
We provide you with Mobile Phone Signal Jamming Devices having different areas of effectiveness.
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一、USES and FEATURES
Attention: please remember to first install the antennas before turning on the device; please remember not to break off the antenna when the device is on, otherwise damage may occur. Thank you!
(一) USES
The Mobile Phone Jammer outputs a signal designed to interfere with mobile phone signals, but not affect other electronic equipment. Neither the device nor the signal it outputs poses any threat to the human body. The Mobile Phone Jammer is ideal for conference rooms, auditoriums, courts, libraries, testing sites, gasoline stations, fuel storage facilities, military bases, command centers and any other locations that would like to prohibit the use of mobile phones.
(二) FEATURES
The P-4421 series Mobile Phone Jammers use all new heat reducing parts and integrated circuits. It features powerful functions and an internal power supply. It comes with both manual and remote control switches and promises easy and convenient installation and use. The Jammer effectively interferes with the receiving signals of mobile phones, but does not interfere with the base station transmission. All manufacturing processes strictly follow ISO9001 quality requirements. The Jammers are safe and reliable products that consistently perform according to stated specifications. They ensure information integrity and environmental protection.
二、MAIN FUNCTIONS AND TECHNICAL INDICATORS
(一) Main Functions:
The four models effectively block CDMA, GSM, DCS, and PHS mobile signals. They only interfere with the mobile phone signals, but do not disrupt the normal operation of other electronic equipment. It can be used when the mobile phone base station is located 200 meters or more from it. Once the power is turned on, it can be left on for a long period of time. The delayed active circuit design prevents the switch from producing sparks.
（二）Main Technical Specifications:
Effective interference radius is greater than or equal to 20 meters (indoors)
TX frequency:CDMA:870-880MHZ;GSM:930-960MHZ;DCS:1805-1850MHZ;PHS:1895-1918MHZ;PCS: 1975-1980MHZ
Frequencies that can be jammed: CDMA:870-880MHZ;GSM:930-960MHZ;DCS:1805-1850MHZ;PHS:1895-1918MHZ;PCS: 1975-1980MHZ
三、INSTALLATION AND DIRECTIONS FOR USE
(一) Steps for Installation
1. Indoors Model
1.1 Remove the Mobile Phone Jammer from its box.
1.2 Place the separate antennas into their allotted slots.
1.3 Install the Mobile Phone Jammer on the wall, the ideal location is 180m off the floor.
1.4 Plug the power supply into the wall socket; the power supply indicator light should go on, then the unit can be turned on using the remote control or manual switch; when the indicator lights next to the antenna slots should go on, it indicates the jammer is operating normally.
1.5 In regards to the size of the space in which the device is being installed, please follow the guidelines set out in the drawings below.
(二) Items to Pay Attention To
2.1 The antennas must be installed correctly before connecting the device to the power supply.
2.2 The effect coverage area for the jamming device is a circular area in which the device is at the center of the circle, therefore the user should remember to correctly select the location for placing the jamming device in order to avoid jamming blind spots.
2.3 The jamming device should be placed in an adequately ventilated area. Avoid blocking the Jammer will large objects; avoid strong heat and electromagnetic sources to ensure the effectiveness and long term stability of the device.
2.4 When the operating the jammer, do not place objects on top of reducing its effectiveness or damaging the device.
2.5When used outdoors, the jammer should be protected from water.
2.6When not needed, the power should be immediately turned off to allow the normal use of the mobile phones.
2.7 When the intended coverage area exceeds the effective jamming area of the device, we recommend using several units in different locations to ensure maximum effective jamming.
四、MAINTENANCE AND SERVICING
4.1 This jamming equipment is maintenance free and does not need servicing.
4.2 When wiping the surface, do not use chemical solvents and avoid using water.
4.3 When not in use, the jamming device should be placed in a dry and well ventilated location; avoid long term contact with salty substances(??) and harmful gases.
4.4 The warranty for this jamming device is one year; within three years of purchase, there is no charge for repairs to the units, but only nominal charges for the materials.
五、FREQUENTLY ASKED QUESTIONS
5.1 When the jamming device is in operation, why do some mobile phones still have a signal indication?
ANSWER: This is in fact an illusion. In reality, the mobile phone at this moment cannot communicate. If you tried to dial out, you would discover that the signal indicator would disappear.
5.2 Will the Mobile Phone Jamming Device interfere with the normal operation of other electronic devices?
ANSWER: No. This is because the electro-magnetic signal of the mobile phone signal jamming device falls within the bandwidths for mobile phones and can only interfere with the telecommunications of mobile phones. This type of signal is a kind of relative static state and will not produce any influence on other electronic equipment.
5.3 Is the Mobile Phone Jamming Device in anyway harmful to human health?
ANSWER: The user should rest assured, the strength of the signal emitted by the Mobile Phone Jamming Device is very weak. Test results have demonstrated that it cannot cause any harm to the human body. At the same time, the Mobile Phone Jamming Device only jams the forward signal of the mobile phone preventing the mobile phone from establishing a connection with the base station, therefore it does not cause any damage to the mobile phone itself.
5.4 What is the difference in distances in the use of the Mobile Phone Jamming Devices indoors and outdoors?
ANSWER: Yes, there is a difference. The effective coverage range of the jamming device refers to its effectiveness indoors. In outdoors in expansive spaces, the distance for effective interference can reach several hundred meters. It should be pointed out that no matter whether it is indoors or being used outdoors, the effective distance of the jamming device has a definite relationship with the environmental conditions, including the distance to the base station, the position where it is placed. Therefore, location should be considered carefully when using the Mobile Phone Signal Jamming Device in order to avoid having a dead corner or influencing its effectiveness in jamming.
5.5 Is the Mobile Phone Signal Jamming Device equally effective towards a GSM mobile phone and a CDMA one?
ANSWER: This is a good question. Since the CDMA mobile phone has much greater capacity to resist interference than the GSM mobile phone, the effective coverage distance that Mobile Phone Signal Jamming Device has for a CDMA phone is less than that for a GSM phone.
5.6 After operating for a time, the back of the casing of the Mobile Phone Jamming Device heats up; over an extended duration will this damage the device?
ANSWER: Thank you for your concern, this is normal. We have designed the metallic case to assist in heat exhaust for the unit. This allows the device to operate over long periods with stability. Therefore, the heat of the casing will not damage the device.
5.7 During operation, why is the indicator light not lit or very dark?
ANSWER: This is a normal, since when the device is working and it gets hot, the output of the device is dropped and so the lower voltage is checked, so this does not influence its normal operation.
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