Portable jammer

Buyers must prioritize frequency band coverage (e.g., GSM, 3G, 4G, 5G, WiFi, GPS, and Lojack). A high-quality device should feature independent frequency switches, allowing users to toggle specific bands without affecting others. Additionally, look for an output power of at least 1-2W per channel to ensure an effective shielding radius, and a cooling system with built-in fans to prevent frequency drift caused by overheating during continuous operation.

For portable units, the battery capacity (mAh) is critical; professional-grade devices should offer at least 120-150 minutes of continuous runtime. Ensure the supplier provides high-capacity lithium batteries and includes both AC adapters and DC car chargers to support mobile usage scenarios. The housing should be made of aluminum alloy for better heat dissipation and impact resistance.

This is a highly regulated category. Buyers must verify the legal status of signal jamming equipment in their destination country. For technical safety, look for CE and RoHS certifications. It is essential to confirm that the device does not interfere with emergency frequencies or public safety bands outside of the intended shielding range. Always request a spectrum analyzer test report from the manufacturer to verify frequency accuracy.

Portable jammers are primarily used for information security in meeting rooms, preventing unauthorized GPS tracking in logistics and VIP transport, and maintaining silence in theaters or examination halls. For B2B buyers, it is important to match the shielding radius (typically 5-20 meters) to the specific dimensions of the intended environment.

Jammers are classified as sensitive electronic equipment. Many countries have strict import licensing requirements or outright bans on civilian ownership. Before placing a bulk order on Made-in-China.com, you must consult with a professional customs broker to ensure the HS Code (typically under 8543.70) is permissible for import in your region to avoid seizure or heavy fines.

Always utilize Secured Trading Services provided by Made-in-China.com to protect your payment until delivery is confirmed. Request a pre-shipment inspection (PSI) by a third party like SGS or Intertek to verify that the frequency ranges and power outputs match the proforma invoice. Avoid suppliers who refuse to provide video demonstrations of the product working with a signal detector.

Due to the built-in lithium batteries, these products must be shipped via specialized dangerous goods (DG) channels. It is recommended to use air freight with battery certification (UN38.3) for faster delivery, or sea freight for large bulk orders to reduce costs. Ensure the supplier uses anti-static and shockproof packaging to prevent damage to the internal oscillators during transit.

Most professional manufacturers on Made-in-China.com offer OEM services for frequency customization. You should negotiate for a low MOQ sample order (1-5 units) to test local frequency compatibility before committing to a bulk purchase. For orders exceeding 50 units, aim for a 15-20% price discount and request spare antennas and batteries to be included in the package.