... BD, XP-4AD-BD freely.XP3-18R-C10DI/8DO, relay output, 3.7 inch blue LCDXP3-18T-C10DI/8DO ... LCDXMP3-18RT-C10DI/8DO, 4 channels transistor/4 channels relay output, 3.7 inch blue touch screen LCD, ... channel pulse output, RS485 communicationXP3-16R-E8DI/8DO, 8 relay output, 3.7 inch blue LCD; support RS485, 2CH ... ; Can expand 2 BD cardsXP3-16RT-E8DI/8DO, 4 relay output, 4 transistor output, 3.7 inch blue LCD ...