Elektron Technology's Bulgin brand offers IP68 and IP69K rated piezo switches designed to meet the needs of a wide range of demanding applications. In contrast to conventional switches, piezo switches have no moving mechanical parts, making them resilient and capable of enduring millions of actuations, offering long-life operation in even the harshest environments. Available in either aluminium or stainless steel, Bulgin’s high-end, vandal-proof piezo switches have a robust one-piece construction, ensuring resistance to physical impact. Extreme temperatures (from -40 to +85 °C) can be accommodated, while environmental sealing guarantees weather and waterproof operation. Customers have a choice of 16, 19 and 22 mm hole diameter.