Product features:Surface-mounted installation 1 bell button including buttonBrass structured and burnishedTechnical data:Soffit 17V / 0.1 A max. 12 V~/= (1.5 A) min. 5 V= ( 0.001A) Installation instructions:Plate hole 16 mm (interchangeable with previous types MKO/KKO) Plate thickness 0.5 mm to 6.0 mm Installation depth 13 mm minus plate thickness (e.g. with 2 mm plate thickness: 11 mm installation depth) Time-saving tool-free installation thanks to easy-grip knurled nut max. 24 V=/~ ( 1.5 A ), min. 5 V ( 0.001A ) Voltage drop when new 0.1 V, contact resistance 0.1 Ohm Insulation resistance: min. 100 Mohm Bounce time 20 ms Suitable for rigid wires with Diameter 0.6 mm to 0.8 mm Actuation force approx. 6 Newtons Switching travel 0.8 mm / total actuation travel 1.2 mm -20°C to +60°CNote: