Description
Otis Elevator Button BS34D Brief Introduction
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Product Name |
Otis Button |
| Model Number | Button BS34D |
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Quality
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Original.Brand New
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Payment
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T/T. Paypal. Western Union
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Delivery
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3-5 Working Days
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Packaging
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Packed by carton
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Otis Elevator Button BS34D – The Click That Starts Every Journey | Nanjing Zhuye Elevator Parts
Every elevator ride begins with a finger — and the Otis BS34D button is what that finger trusts. A compact, vandal-resistant push-button with a soft silicone dome, gold-plated contacts and a daylight-visible RGB halo, BS34D delivers a 1 ms response and 3 million cycle life. When the halo fades or the contact oxidises, the call is lost and passengers hammer every button in sight. Nanjing Zhuye Elevator Parts keeps genuine BS34D units in vacuum-sealed trays, ready for next-day despatch worldwide — helping you restore that first, vital click without costly OEM delays.
Product snapshot
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Otis part number BS34D, hardware rev. D4, silicone dome, gold contacts
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24 V DC, 20 mA RGB LED, 1 ms debounce, 3 million mechanical cycles
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34 mm front bezel, 22.3 mm mounting hole, IP65 front, IK08 impact
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RGB halo, 256-colour PWM, dimmable 0-100 %, daylight visible
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N/C + N/O gold-plated contacts, 0.1 A min, 2 A max, 24 V AC/DC
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Temperature −25 °C to +70 °C, UV-stable polycarbonate, RoHS, REACH
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CE, UL, SIL-2 suitable under IEC 61508, Otis QES 2024 approved
Where it works
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Otis Gen2® Life, Gen2® Switch, 4200/5200 COP and LOP panels
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Modernisation packages replacing cracked or faded buttons on any 22.3 mm cut-out
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Any controller expecting SIL-2 certified call input and RGB confirmation
Installation method – 2-minute finger-swap
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Place lift on inspection mode; switch OFF COP breaker; lock & tag.
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Remove button face-plate with plastic pry tool; photograph wire colours.
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Release QC terminals; slide old button out.
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Insert BS34D until bezel snaps; reconnect N/C and N/O, 24 V, RGB common.
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Power up; halo must light white for 1 s, then turn off.
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Press button; controller input LED must illuminate and halo change to blue (customisable).
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Run 100 manual presses; verify no missed clicks, halo uniform.
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Apply torque-stripe paint; log part number and date in maintenance book.
Replacement cycle & preventive maintenance
Otis bulletin SB-BTN-2024-03 recommends:
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Visual inspection every 6 months: check for cracked bezel, faded halo, loose clip.
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Functional test every 12 months: contact resistance < 50 mΩ, operating force 1.2 ±0.2 N.
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Replace every 1 million cycles or 5 years in high-traffic (> 1 000 starts/day).
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Immediate replacement if:
– contact resistance > 100 mΩ,
– operating force > 2 N,
– halo dead or RGB colour shift > 20 %,
– missed clicks > 1 per 100 operations.
Pro tip: 70 % of premature failures are traced to over-torqued face-plates — re-torque to 0.8 Nm every year.
Maintenance tips from Nanjing Zhuye Elevator Parts
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Always use gold-plated contacts for 24 V DC; tin contacts oxidise and cause missed calls.
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Never apply WD-40; it attracts dust and turns contacts black.
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Keep a box of BS34D in every service van; at 20 g it costs less than one callback.
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After heavy cleaning, run 100 presses and check halo uniformity.
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Order the “Button Kit” (BS34D + clip + grease sachet) from Nanjing Zhuye Elevator Parts to eliminate parts hunting and ensure matched components.
Why buy from Nanjing Zhuye Elevator Parts?
We are an Otis-authorised distributor, importing BS34D directly from the Czech factory, gold-plating every contact and shipping with a 24-month replacement warranty. Stock is stored in humidity-controlled bins to prevent LED fading. Orders placed before 15:00 China time leave the same evening via DHL Express, arriving Europe or North America in 2–4 days. Bulk pricing starts at 100 pieces; we can laser-mark your asset number and include a spare halo diffuser free of charge.
Conclusion
The BS34D button is the silent sentinel that starts every Otis ride. By installing the genuine unit, testing clicks regularly and replacing it before the halo fades, you ensure every call is answered, every LED shines, and every passenger steps in with confidence. Stock genuine BS34D from Nanjing Zhuye Elevator Parts today — because when the click stops, the lift stops.
