l insert intended use extension operation for light dimmers no. : 1731 dd, 1711 de, 1724 dm, ud 1755 reg operation with proper cap; Technical data rated voltage: AC 230 V network frequency: 50/60 hz; Standby power: approx. 0.3w Connection: Screw terminals total length of extension unit cable: max. 100 m installation in discharging box according to DIN 49073 .