SJ-004G is a small pocket size multiband jammer with PC adjustable frequencies which prevents the operation of cellphones, Wi-Fi and Bluetooth devices by radiating noise interference.

There are many situations when you do no want to be disturbed by noise from cellular phone calls at short distances. For instance:
• when you need avoid information being disclosed secretly during meeting
• when you don't want to ask your visitors to switch off their mobile phones
• recreation in restaurants, theatres, cinemas, museums, art galleries, libraries
• while traveling mornings and evenings in the train and want to keep peace of mind and travel in silence
• when you meet an doctor and want doctor to gives full attention to you
• praying in a church or temple
• studies in schools
• in meeting rooms and board rooms
• in private offices
• in your car if you need to concentrate on your driving
• in bus and vehicles (in order to passengers have good undisturbed nap)
• in hospitals
• in recording studio
• in a factory or office where employees/ coworkers are actual talking by cellphones which is resulting in loss of productivity - a cellphone jammer which has resulted in better productivity in your company
• in stores where clients use their cell phone very close to the counter and cause loss of business as genuine buyers can not reach the store counter.

Our Cellphone Wi-Fi Jammer with Frequency Setting SJ-004G will help you protect yourself from the threat of eavesdropping via cell phone (even when cellphone is switched off can listen to conversations at a distance of several meters) or via Wi-Fi or Bluetooth devices.

In addition, the device will allow you to suppress any activity of cellular phones in the room, thus giving the opportunity quietly and intently to conduct a meeting, a lecture, a spectacle, a examination, a presentation, to defend a thesis etc. Wherever you need to maintain secrecy or avoid disturbances from cellular phone calls, SJ-004G will be simply indispensable.

This jammer has 3 separate channels designed to operate in GSM-850/ CDMA-850/ GSM-900/ DCS-1800/ PCS-1900/ CDMA-1900/ WCDMA-1900/ WCDMA-2100/ Wi-Fi/ or Bluetooth frequency bands. The user can reprogram the jammer by PC-software to be used in various combinations of these standards and even can tune SJ-004G to specific frequencies.

SJ-004G is destined for personal use. It has small pocket size and doesn't look like a regular jammer. Internal antennas make this model inconspicuous.

• The Jammer can be tuned to specific frequencies
• 3 separate channels
• Frequency setting of the Jammer by PC software with friendly graphical user interface
• Could block all of the mobile phone networks
• Very easy-to-use
• Built-in antennas
• Built-in working & recharge condition indicators
• Built-in high capacity rechargeable battery
• Universal charging from PC USB or from charger
• Designed for personal use
• Portable compact handheld design
• It doesn't look like a regular jammer

We bundle SJ-004G together with software which lets user to change jammer settings with PC.

Software works on a PC with USB-port under Windows XP/ Vista/Windows 7/ Windows Server 2003. It has such features:
• to check current jammer settings
• to apply new settings to jammer
• separately turn ON/ OFF frequency channels. (This feature lets us extend battery life when unused channel is switched off. Also it's possible to increase output power of the jammer by using 2 channels simultaneously on the same frequencies.)
• to choose frequency settings from factory preinstalled presets for each channel (software commes with settings appropriate popular cellular networks and Wi-Fi). By using various combination of these presets this multiband jammer can be used like as GSM+3G jammer or GSM+WiFi jammer or 3G+Wi-Fi jammer or GSM/3G/Wi-Fi-only jammer or can be tuned to specific frequencies.
• to use user presets separately for each channel. (There is an availability to tune the jammer to desired specific frequencies. User can select for each channel separately initial and final frequencies within the operational frequency range)
• easy friendly graphical user interface. It's very easy to switch the presets or change frequencies - only click to radiobuttons or move sliders.