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This information is for guidance only and is not intended to form the basis for contract. All dimensions in mm.

push-button switch for elevator US97-EN - 21050 Pushbutton Type US97-EN (waterproof to IP66 & IP67)

Publication Number PB182/0608Application The Dewhurst US97-EN button is designed to meet the requirements of EN81-70* and pr EN81-40/41 which requires the pushbutton legend to have a height of 15mm. It is also ideal for use in airports, shopping centres, train stations, platform lifts etc. where a palm operated button better meets the requirements of lift users.Dewhurst illuminated legend pushbuttons ensure a bright wide angle view in all lighting conditions and includes inthe range tactile buttons to aid the visually impaired. The US97-EN is ideal for use in all types of lifts and similar installations including those which may be exposed to heavy duty or vandalism.The EN pressel range is available in three background colours; black for call, door open and door close buttons, yellowfor alarm and green for exit floor button in the lift car. Operation Installation Operation of the pressel activates a patented switch technology called Pushgate™*, a revolutionary magnet switch, having no parts that can fatigue. Illumination of the legend and halo is independent, so the legend can be permanenetly illuminated, with the halo illuminating for call acceptance or vice versa. Standard illumination is through long life LED’s at 24V. The pushbutton is securely held to the back of the faceplate by 3 off M4 x 16LG weldstuds, washers and nuts.Dewhurst US97-EN pushbuttons can be supplied loose or incorporated into stations with 1.5mm or 2.5mm stainlesssteel faceplates, with a vertical pitch of 80mm and horizontal pitch of 90mm. If pushbuttons are supplied loose, spacers are provided to accommodate the differing faceplate thickness. Technical details Weight75grmsMoulded inHigh grade polycarbonate (flame retardant)Environmental protectionIP66 and IP67Pressel plate materialAnodised aluminium (black, green, yellow) Pressel plate areaUS97-EN = 804mm² Button force7N LED currentLegend/halo, 35mA/50mA (typical) LED coloursWhite/red, white/green and white/yellow (legend/halo) LED voltage24V a.c./d.c. ± 15%Designed to meet the requirements of BS CECC 96400: Pushbutton Switches where relevant, EN81-1/2, EN81-70*/EN81-71 Category 2, pr EN81-40 and pr EN81-41.* Except for button force Marking Rating A range of legends in Helvetica Medium characters and symbols are available, please refer to our website. 30V d.c. at 50mA max. resistive loads - min. no. of operations: 5 x 10 24V d.c. at 20mA max. resistive loads - min. no. of operations: 5 x 10 12V d.c. at 5mA max. resistive loads - min. no. of operations: 5 x 10 Power: 2.5 watts (max) Contact arrangements: 1N/O only T actile legends are formed during the moulding of the pressel body and are in opal 15mm high characters.Pushgate™* technology is a patented design of
Patent Nos: US PAT nos. 5,523,730; 5,666,096; 5,867,082; 5,990,772; 6,130,593; 6,069,545; 6,023,213; 6,069,552; 6,137,387; 6,262,646 Chinese PAT no. ZL96110385.X Taiwanese PAT No.NI090979 Australian PAT No. 727962 UK Patent Pending. 666 Dewhurst plc t +44 (0)20 8607 7300 f +44 (0)20 8572 5986 info@dewhurst.co.uk www.dewhurst.co.uk Contact your local sales office: Dewhurst plc t +44 (0)20 8607 7300 f +44 (0)20 8572 5986 info@dewhurst.co.uk www.dewhurst.co.ukContact your local sales office: Australia t 02 9603 0200 f 02 9603 2700 info@alc.au.com www.alc.au.com t 02 9310 4288 f 02 9698 4990 info@liftmaterial.com www.liftmaterial.com

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