BL20-E-16DO-24VDC-0.5A-P BL20-E-1SWIRE BL20-E-2CNT-2PWM BL20-E-4AI-TC BL20-E-4AO-U/I BL20-E-4IOL BL20-E-8AI-U/I-4PT/NI BL20-E-8DI-24VDC-P BL20-E-8DO-24VDC-0.5A-P BL20-E-GW-CO