read the ini for policehelper
but here
[ SETTINGS ]
HardcoreMode = no
// In hardcore mode you won't see blips of suspects (doesn't work)
Units = 1
// 0 - imperial units (default), 1 - metric units
DrawScale = 1
// Set scaling of PoliceHelper device (recommended values between 0.8 - 1.15)
KeyYES = X
// set a key that will trigger PoliceHelper device (Alt + key = fire extinguisher)
KeyNO = C
// set a key that will trigger PoliceHelper device
KeyCones = Z
// set a key for deploying road barriers (CTRL + key), road cones (SHIFT + key)
// and road flares (ALT+key, or CTRL+key at night) if they are installed
KeyID = None
// set key that will trigger id check while on foot, leave blank if you don't want to use it
// (can be triggered in bait car menu)
KeyEngine = None
// set key that will turn on/off your car engine, leave blank if you don't want to use it
// (can be triggered in bait car menu)