COMPACT FAIL SAFE
Number: OFN 91002 MICRO FAIL SAFE fits in all radio boxes
SUPER SMALL SIZE, UNIVERSAL PLUGS, WORKS WITH MOST RADIOS
Extended Product Information: Ofna's micro fail-safe is all you need to protect your nitro car or truck from running away out of your control. It's super small size, about as big around as a nickle, allows it to be mounted easily in any nitro vehicle. Just plug it into your receiver and plug your throttle servo into the other end and you're ready to go. Simple one touch set-up, low battery warning, and radio interference warning system make this one of the best products in its class.