BL20-B3S-SBC BL20-B3T-SBC BL20-B6T-SBBSBB BL20-B6T-SBCSBC BL20-BR-24VDC-D BL20-E-16DI-24VDC-P BL20-E-16DO-24VDC-0.5A-P BL20-E-1SWIRE BL20-E-2CNT-2PWM BL20-E-4AI-TC