This jammer blocker fits for small vehicle only, large vehicle such as truck is not recommended.
Please plug the jammer blocker into car’s lighter socket after engine’s started.
Jamming Object: GPS L1 tracker, GPS navigator, GPS L1 logger
Typical Coverage: 2 to 5 meters
Output Power: 21 dbm / 128mW
Power Source: 12V-24V
Working Current: 100mA
Dimensions 80 x 21 x 21 mm
Operating Temp 0 ~ 50 degrees
Humidity 5% ~ 80%
1*Mini GPS jammer for Car
1*Anti-surge cartridge Fuses