Killer Bee #3 Remote Kill Switch / Failsafe (version 2)

The Killer Bee will automatically kill the engine during: radio glitch/loss, low battery, bad connection, or total battery power loss. You can also make the Killer Bee kill the engine anytime you want by pressing the transmitter's 3rd channel switch (Killer Bee v1), or by turning off your transmitter power switch (Killer Bee v2). 


There are 3 different versions of the Killer Bee to choose from; the V1, V2, and V2-S. Which Killer Bee you need depends on your radio gear.

Killer Bee v1 works with all 3 & 4 channel radios. It plugs into the unused Aux channel on your receiver.
Killer Bee v2 works with all 2, 3, & 4 channel radios, except HPI 2.4ghz, Spektrum and Nomadio brand radios. The v2 should not be used on helicopters.
The v2 is not necessarily better than the v1. They are just different. 
The v2-S works just like the v2, but it has a 5 second timer built-in that makes sure that the engine totally shuts down, and prevents the Spektrum failsafe from overriding the kill switch.

Once you have decided which Killer Bee version that you need then you need to decide what kind of wiring you want to go along with the Killer Bee. The wiring connects the Killer Bee to your ignition coil. You can also add a LED or Buzzer to the Killer Bee to help you know the status of the kill switch.