Base module, Color black, Product range: SL signal towers, Connection technique: Spring-loaded terminals, Mounting type: for horizontal mounting, Fitted with: Base: Can hold tubes with a diameter of 25 mm (±0.5), Description: For wall thickness 2 - 3.4 mm, Number of modules: max. 5 modules, For use with: SL7-L-…, SL7-BL-…, SL7-FL-…, SL7-AP-…, Connection to SmartWire-DT: no