![CDATA[Binary input 4-way, 20 V, REG BE/S4.20.2.1 Bus system KNX, Other bus systems without, Mounting type REG, Width in modular units 2, With LED display, Number of inputs 4, Input voltage 35 ... 35V, Type of input voltage pulsed, External query voltage required, Protection class (IP) IP20, Min. depth of the device box 64.5mm,]]>