Grayhill introduced a small, sealed rotary switch - the 77 Series - which requires less than 6,35 mm behind the panel, making it ideal for handheld devices. Furthermore, its MIL-rated resistance to moisture, sand and dust indicates that it is suitable for harsh outdoor environments.
Military handheld radios, night vision goggles and laser aiming devices all require rotary switches to select settings. Because the typical soldier carries more than one of these devices, size is an important consideration. The 77 Series rotary switch will fit on almost any device. Its diameter is only 12,7 mm and it requires just 4,6 mm of clearance.
These devices are carried through some of the harshest environments from driving rain to swirling dust storms. Because of this, the environmental seal is almost more important than the size. An unsealed switch would quickly lead to a malfunctioning device. Grayhill’s 77 Series rotary switches have endured rigorous testing to confirm they meet military specified standards for resistance to moisture, salt spray, underwater immersion, sand and dust.
The 77 Series is available with or without a process seal or a shaft and panel seal. It can switch up to 10 positions in single-pole configuration or up to 5 positions in a double-pole configuration. The switch can be ordered with continuous rotation or a fixed stop, and it features non-shorting, wiping contacts.
Grayhill can customise the 77 Series to meet unique electrical or environmental requirements. Modifications can be made to achieve different cycles of operation, currents, temperature ranges or atmospheric pressure conditions.
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