ElekTek B22 BC Bajonett Sicherheitsschalter Lampenhalter mit Rückwandabdeckung & Schrauben
B22 (22mm) Bayonet Cap. Solid Brass B22 Lamp Holder With Back Plate, Cover and Screws - Choose your finish. If a bulb is not fitted - the switch will not work. Switch will ONLY work if a bulb is fitted.