MASTER PL-S 4-Pin dimmable CFL Lamp, designed for use in hotel, restaurant, theatre and home. It is suitable for use in sign, corridor, security and orientation lighting. The MASTER PL-S is an energy saving compact fluorescent lamp. Envelope consists of 2 parallel narrow fluorescent tubes. Optimal light performance for short or long operation per switch on. Long life and sustainable light output. 4-Pin base without starter and capacitor. Lamp characteristics are influenced by operating conditions and control gear used. The lamp contain only 3 mg of mercury.