BL20-1AI-I(0/4...20MA) BL20-1AO-I(0/4...20MA) BL20-1RS232 BL20-1RS485/422 BL20-1SSI BL20-2AIH-I BL20-2AI-I(0/4...20MA) BL20-2AI-PT/NI-2/3 BL20-2AI-U(-10/0...+10VDC) BL20-2AI-U/CC