YOKOGAWA Yokogawa AAI143-H50/K4A00 Analog Input Module · 16-Channel Isolated HART 01 / OVERVIEW Analog input for FIO systems AAI143-H50/K4A00 is a Yokogawa analog input module for 16 isolated 4 to 20 mA input channels. The HART version supports digital communication with HART field devices, while the /K4A00 option uses the KS Cable Interface Adapter. PART NUMBER AAI143-H50/K4A00 Yokogawa FIO 02 / TECHNICAL SPECIFICATIONS Key technical data Number of input channels 16,