Import 4 Band 2w Portable Wifi, Cell Phone Signal Block — Buy in Bulk from Supplier in China

This is a portable 4 band signal jammer with a total output power of 2W, designed to block WiFi, GSM, 3G and CDMA signals across multiple frequency ranges. It covers European and Middle Eastern markets for WiFi (2400-2500 MHz), GSM900 (925-960 MHz), GSM1800 (1805-1880 MHz) and 3G (2110-2170 MHz), as well as American and Asian markets for WiFi (2400-2500 MHz), CDMA/GSM (850-960 MHz), DCS/PHS (1805-1990 MHz) and 3G (2110-2170 MHz). The jamming range extends up to 20m, though this depends on local signal strength.

The unit operates with external omni-directional antennas covering all transmit frequencies on the downlink only. It is powered by a 50-60Hz, 100-240V AC supply via an included AC adapter (AC100-240V to DC12V) and a 2000mAh battery, providing around 90 minutes of continuous use. Its compact design measures 104x53x33mm (excluding antenna) and weighs 0.8kg, making it portable for field applications. Typical portable jammers in this class use lithium-ion batteries with similar capacities, and standard AC adapters support universal input ranges.

This model is suited for environments requiring controlled signal blocking, such as exam halls, secure meetings or military zones. Buyers typically include security firms, government agencies and event organisers who need reliable, short-range interference. Trade terms such as MOQ, packaging and lead time are not specified in the listing, so confirmation with Jammer Group is required before ordering.

Jammer Group is based in Fuhuaraod, Shenzhen, Guangdong, China, and operates as an imported-tier supplier. The company specialises in signal jamming equipment, offering products tailored for various regional frequency standards. Its address places it within a key manufacturing hub for electronics in southern China, which is known for producing a wide array of security and communication devices.

The supplier’s profile indicates a harbor trust tier, but no response rate or average response time data is available. This suggests that potential buyers should directly contact Jammer Group to confirm product details, trade terms and logistics. The listing provides no information about the company’s founding year, certifications or client base, so these specifics must be verified through direct communication.