Product features:Surface-mounted Number of contacts see order overview structured-burnished surface recessed burnished brass frames incl. PROTACT 420 AL-KS cast bronze / 2 bell buttonsTechnical data:Temperature range -20°C to +50°C max. 12V~/= (1.5 A) min. 5V (0.001A) 62 x 98 x 15 mmInstallation instructions:Note: