The SmartAlarm has similar functionality to the SmartGuard, but is smaller and includes a programmable low voltage alarm. Being lightweight, the SmartAlarm can also be used as an on-board battery monitor and when combined with the remote twin 90dB sounder with LED it can give you live audible battery warnings in flight.
Lithium Battery Cell Count: 1~8 Cells
Lithium Cell Low Voltage Alarm Range: 2.0~4.0V
NiCd, NiMH, Pb Pack Voltage Range: 3.3~24.0V
Pack Low Voltage Alarm Range (NiCd, NiMH, Pb) 2.0~20.0V