Buy CM4 Box Portable Jammer for GSM GPS Locator

This box-type anti-locator jammer CM4 is designed to effectively block CDMA, GSM, GPS-L1 and GPS-L2 signals, thereby ensuring the inoperability of GPS locators (including newer GSM trackers). It aims to enhance the security of vehicles or personal locations and comprehensively protect your privacy and safety.

Also adopting a box-type design is the T-US-03 Portable 5GHz Wireless Signal Blocker. It is designed to block WiFi 2.4G, WiFi 5.2G, and WiFi 5.8G signals effectively. If you are interested, feel free to place an order — the price is the same as our CM4 model.

Simple and intuitive operation:

One-button switch design, a green light illuminates when the device is powered on, indicating that it is turned on. The device is also equipped with power and charging indicator lights, the red light indicates charging, and it goes out when fully charged, which is convenient and easy to use.

Common application scenarios of GPS tracker blocker:

• Vehicle safety protection: effectively prevent vehicles from being tracked by GPS and protect the privacy and safety of drivers.
• Personal privacy protection: block GSM signals to prevent personal privacy from being tracked or monitored.
• Conference confidentiality protection: can interfere with positioning signals during important meetings to effectively prevent sensitive information from being leaked.

Portable GPS jammer for car ‘s Technical parameters:

Size: 215 x 43 x 90mm
Weight: 0.5kg,
Shielding range: about 10-15 meters
External power supply: 12V car cigarette lighter or 220V power grid
Battery details: 12V 4Ah lithium battery, battery life up to 80 minutes
Cooling device: high-efficiency radiator and fan, quickly dissipate heat through convection vents
Output power: single-band output power up to 1W, total power up to 4W
Antenna: built-in omnidirectional antenna
Kit contents: GPS Tracker jammer CM4 x 1, AC adapter x 1, car charger x 1

If you only need to jam GPS L1 signals, we recommend the P-US-01-1 – Plug and Play Cars Cigarette Lighter GPS Jammer. This device simply plugs in to immediately block GPS L1 signals within a 2-5 meter range, protecting your personal location and easily preventing unwanted tracking. It’s also very affordable.

If you only need to block all types of GPS signals, then you should check out our P-US-04-1, which can block GPS L1, GPS L2, GPS L3, GPS L4, and GPS L5 signals.