Universal slave insert, presence detector, Busch-Wächter presence inserts, universal slave insert 3-wire connection technology (neutral conductor required). For extending Busch comfort switch or Busch presence detector installations. For communication with universal relay insert 6440/01 U. For communication with universal e-contact insert 6440/04 U. For Busch comfort switch control element 6815-...-101. For Busch presence detector sensors 6813-.-102. Nominal voltage: , +10 % / -10 % Nominal frequency: 50 Hz/60 Hz Control/signal outputs: 1, electronic output, non-floating Temperature range device: -5 °C to 45 °C Dimensions (H x W x D): 71 mm x 71 mm x 32 mm Installation depth: 31 mm