... -search channels, MTK3329 chipset, module from Holux or Royaltek, L1, C/A code,1575.42MHZI/OInputsEmergency Button, 2xLow Level Voltage, 2xHigh ... Level, ACC, Engine, Door Open, Brake , 2x A/D (10bit digital,5V,12V,24V,30V optional) OutputsOil and electricity ...