User's Manual

1/28/2015 LMU42x0Hardware&InstallationGuidePULSWiki
https://puls.calamp.com/wiki/LMU42x0_Hardware_%26_Installation_Guide 19/47
thevehicle’signitionstatustoprovideforflexiblepowermanagement.Theothertwoinputsmaybeusedto
sensevehicleinputssuchascoolingunitoperation,ahiddendriver“Panic”switch,taxionduty/offdutymeter
statusormanyothers.
Theignitioninputispulledtogroundthroughthe10kresistance,wheretheotherinputscanbeconfiguredto
benormallyHigh(i.e.pulledto+12vthrougha10kresistor)orLow(i.e.pulledtogroundthrougha10k
resistor).Thediagramsbelowshowhowtoconnecttheinputsinbothahighandlowbiasedconfiguration: