Vandal-proof metal keypads

14 May 2008 Switches, Relays & Keypads

Lorlin Electronics has introduced its KP range of vandal-proof metal keypads. Responding to increasing demand for secure and rugged security switching, these attractive metal keypads may be used in public and industrial environments for access control, vending machines and kiosks, environmental control and service access.

Keypads may be specified with 1, 2 3, 4 12 or 16 buttons and are for front or rear mounting on to a flat surface. The keys are available back-lit by LEDs with a choice of blue, red, green, white and yellow colour, have a large clear type style on the button faces and there is a choice of casing and button colours. Low profile mounting bezels are available that can be fixed from the rear of the control panel, ensuring that mounting-screws cannot be accessed by vandals.

The keypads are manufactured from strong, powder-coated, die-cast zinc, with an anti-pull key design, IP rated for weather, water and dust resistance. The switch contacts are rated at 24 V d.c., 20 mA and are reliability tested to 4 000 000 cycles per key. Electrical connection is to 2,5 mm pitch PCB terminals and a suitable cable connector, and the keypad is RoHS and CE compliant. Operating temperature range is -40°C to +80°C and it is impact resistant to 20 joules via a 50 mm diameter steel impactor.

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