HSD-4 Channel High Side DriverHave an application with a lot of small solenoids that need 12V power and rapid switching? Dont want the expense of a bank of four separate solid state relays, each rated for five times the current each solenoid needs? This module lets you run up to four medium current 12 volt devices with high speed solid state switching. The HSD 4 module provides four high side drivers for solenoids that need 12 volt power instead of ground. Wire a ground triggered