This is total speeding ticket protection! The only portable detector you'll ever need. And only from K40 Electronics. 

Designed from the same technology as our signature Undetectable Remote Systems, the RD850 is a technological marvel in a sleek package that requires no installation. Just mount it on your dash, visor, or windshield, and plug it into your cigarette lighter (can also be connected to your fuse box). Dismounts in seconds too. So it's perfect for second cars or rental cars.

Features include:

• Advanced Microwave Radar Receiver Design
  For exceptional performance to all radar guns, including DSP
  driven Ka band radar.
• Patented Intermediate
  Frequency Rejection Software
  Reduces non police signals without sacrificing performance
  to true police radar.
• Unique "5-window" Design
  Helps this detector pick up laser signals front and rear, even off axis signals.
• VG-2 Protection
  Prevents detection from the VG-2 Gun (radar detector detector) while emitting a brief audible and visual alert.
• Pulse Protection
  Immediately alerts you to police "Instant on" radar.
• Signal Alert Indicator
  Four LED's illuminate as the strength of the police radar signal increases.
• Band Indicator
• Audio and visual alerts combine to alert you to radar or laser signals.

Replacement parts in Hardware Kits P-1 Kit and P-2 Kit.