2015 Hand held Rolling Codes Jammers

What is rolling codes?

A rolling code (or sometimes called a hopping code) is used in keyless entry systems to prevent replay attacks, where an eavesdropper records the transmission and replays it at a later time to cause the receiver to ‘unlock’. Such systems are typical in garage door openers and keyless car entry systems.

What is a rolling codes jammer

315Mhz 433.92mhz 868mhz Rolling Codes Jammers

7800mha battery working 2~3 hours

Upto 3W output jamming range is 10~30m