5 Channels GPS WIFI 2G 3G 4G Prisons Cell Signal Jammer
250W Indoor and Outdoor Waterproof 5 Channels GPS, 2G, 3G, 4G, WIFI Prison Cell Signal Jammer designed for high-security environments.
Model: U-J270HW
This high-power cell phone signal jammer is engineered for critical security locations such as prisons, military installations, and government agencies where preventing unauthorized mobile communication is essential. The device effectively blocks CDMA, GSM, DCS, GPS, and WIFI frequency bands simultaneously.
Key Advantages
• Simultaneously blocks 5 frequency bands: CDMA, GSM, DCS, GPS, WIFI
• Powerful 600-meter jamming radius (depending on local signal strength)
• Advanced cooling system supports continuous operation
• Environmentally friendly and safe for human health
Applications
Prisons, Military Compounds, Government Buildings, Oil and Gas Facilities, Security Services, Military Units, Secret Services, Museums, Factories, Border Patrol, Customs, and other sensitive locations.
Product Features
- Maximum 250 watts total RF output power
- Manual adjustable output power for each channel
- Independent frequency band control with individual switches
- Power amplifier protection design ensures reliable operation
- Customizable frequencies including AM/FM Radio, LoJack, VHF, UHF, Walkie-talkie, Wireless Toys, Remote Control, iDEN, CDMA, GSM, GPRS, DCS, PCS, AWS, WCDMA, UMTS, 3G, 4G, LTE, GPS, Galileo, Compass, Glonass, WIFI, Bluetooth, Spy Camera, WIMAX, UAV, Drone, and more
- Optional jamming for five or six bands
Technical Specifications
| Output Interface |
Shield Band Frequency |
RF Output Power |
Output Power/Channel |
| CH1 |
851-894 MHz |
50 dBm |
23 dBm/30KHz (min) |
| CH2 |
1920-1990 MHz |
50 dBm |
22 dBm/30KHz (min) |
| CH3 |
2110-2170 MHz |
50 dBm |
19 dBm/30KHz (min) |
| CH4 |
2400-2500 MHz |
50 dBm |
20 dBm/30KHz (min) |
| CH5 |
1572-1607 MHz |
50 dBm |
20 dBm/30KHz (min) |
Power Supply: AC110V / DC28V
Jamming Area: 50-600m (depending on mobile network signal density)
Weight: 47Kg
Dimensions: 720*452*335mm
Packing Size: 850*620*470mm
Output Power: 250W
Power Consumption: 1500W
Humidity: 30%-95%
Operating Temperature: -20 to +55 Celsius Degree
Important Note: Always connect all antennas before switching on the power supply. Do not remove antennas while the machine is operating.
Operation Guide
Setup
• Connect directional panel antenna (4G/GSM/3G/WIFI)
• Connect power supply interface (AC220V IN)
Power On Procedure
• Install all antennas first (required to prevent equipment damage)
• Input 220V AC power
• Turn on the "RED Switch"
• Press the on/off green button
Power Off Procedure
• Turn off the "RED Switch"
• Disconnect 220V AC power from main machine
Frequently Asked Questions
The shell becomes hot after working for some time. Will long working hours damage the machine?
This is normal operation. The metal shell is designed to conduct heat away from internal components, maintaining optimal working conditions during extended operation.
Does the jammer have the same effect on GSM and CDMA cell phones?
CDMA phones have better anti-interference capabilities than GSM phones, so the interference effect is typically better for GSM devices.
Is there a difference in jamming distance between indoor and outdoor use?
Yes, outdoor signals are generally stronger than indoor signals. The effective jamming distance depends on surrounding conditions, including distance to base stations and installation position.
Does the jammer interfere with other electronic equipment?
No. The electromagnetic signals operate only within government-regulated bands and specifically target mobile phone communications without affecting other devices.
Is the jammer harmful to human health or cell phones?
The electromagnetic signal intensity complies with national environmental electromagnetic wave health standards. The signals are relatively small and safe for human exposure. The device only disrupts the connection between cell phones and base stations without damaging the phones themselves.
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