
433 MHZ AUTOMOTIVE RFID KEY FOR DETECTING JAM CARDS
Automotive jammer decoder 433 MHz jam detector 309-55S4
No false alarm from people who use a nearby cell phone, WiFi or Bluetooth.
Adjustable detection distance.4. Sound warning and high-light warning light.
Relay output to connect car alarm.
Low power consumption: One AAA battery lasts for 3 days.