iRZ ion fm, User Manual

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nitely, until external power voltage drops below 9 V. After that, the device will switch to built-in battery, while
remaining in “Active mode”, until its charge is depleted to a critical level. In this case, the device will auto-
matically switch to “Deep Sleep Mode” (“Mode 3”).
NOTE! During prolonged parking, iON FM may completely discharge the vehicle’s AC battery. To avoid that,
connect the terminal to the part of the fuse box that is de-energized when ignition is switched off. Alterna-
tively, use battery disconnect switch.