Radio Shack DC Power Adapter Owner's Manual page 7

Power Indicator — an indicator lights when a power adapter is
properly connected and turns off when there is a fault in the cir-
cuit.
Cigarette-Lighter Fuse Holder — protects the adapter and the
automobile in the unlikely event of a short circuit.
Regulated Output Voltage — keeps the voltage stable within
an input range between 11 and 16 volts to ensure the proper
voltage is delivered to sensitive electronic components.
Low Input Voltage Shutdown Circuit — shuts down the
adapter when the input voltage falls below 7.6V DC to safe-
guard your vehicle's battery.
Input Coil Cord — a special polyurethane material with "mem-
ory" capability enables the cord to stretch up to 5 feet and return
to its original compact size of about 12 inches to prevent tan-
gling.
7
Features