Tamiya TAM450171

Fail Safe Unit for Use with CARS and BOATS with Futaba "J" Radio Fail Safe is a safety device that constantly checks the pulse signal from the receiver by means of a CPU (central processing unit) and turns on a fail safe if the pulse is disturbed by interference. When the power supply voltage drops, a battery fail safe function turns on and moves the throttle servo to a preset position (normally, idle/brake). Compact and lightweight design does not affect servo performance Responds quickly to interference, etc, and prevents loss of control of model Quick recall function quickly resets the fail safe function by normal servo output signal from the receiver when the interference, etc, disappears May be used with AM or FM Futaba "J" systems Plugs directly into system between the receiver and throttle servo (no soldering required). Usable receiver power supply: (1) 4-cell 4.8 volt receiver pack (with 270mAh or more), OR (2) 5-cell 6 volt receiver pack (with 500mAh or more), OR (3) 6 volt supplied by BEC internal control amp or regulator Operating voltage: 3-7volt (brake fail safe detection voltage 4 volt) Current drain: approx. 4mA/6v (when lamp off) Input/output pulse width: 0.8-2.2msec Input/output frame width: 10-25msec Size: 20.5mm x 34.8mm x 8.4mm (0.81" x 1.37" x 0.33") Weight: 6.6g, 0.23oz (including connector)