Socket with protective contact pin and control LED Q.1/Q.3 polar white, velvet. Socket with protective contact pin and control LED 2-pin + earth, with screw lift terminals, control LED lights up when mains voltage is applied, reliable voltage display due to insensitivity to apparent voltages, with increased contact protection. Flush-mounted installation, surface program. Material: plastic, thermoplastic, shatter-proof, halogen-free.