Description
1. Full Supply Chain For Otis, Kone, Schindler, Mitsubishi, Thyssenkrupp Elevator Lift and Escalator All Brand Spare Parts
2. 100% Original New with a one-year free Guarantee.
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4. Huge Customer From European
| Product Name: | Otis elevator call buttons BR27C A311 round button |
| Model Number: | BR27C A311 |
| Brand: | Elevator button |
| Feature: | 100% Original New |
| Guarantee: | One-Year Free Guarantee |
| Delivery Time: | 3-5working days once get the payment |
Elevator Call Button BR27C A311 – The Million-Cycle Switch That Answers Every Passenger in 0.1 s
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.
Passengers judge an elevator within half a second—if the call-button LED does not light the instant a finger taps, the entire ride feels “old” and “unsafe”. The BR27C A311 is the 27 mm square, illuminated call button that Otis, Schindler, Thyssen and most Chinese OEMs rely on for hall and car stations. Nanjing Zhuye Elevator Parts keeps 22 000 pcs in stock for same-day despatch. Below we decode the part number, show a 90-second field replacement, and give a replacement cycle that turns expensive “stuck-on-call” callbacks into planned five-minute PM jobs.
1. What BR27C A311 Really Means
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BR27C = vandal-resistant 27 mm lattice that snaps into any 30 × 30 mm European or 25 × 33 mm Asian cut-out
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A = flush square cap (only 2.2 mm projection, graffiti-proof)
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3 = white pictogram on opaque black lens (other digits: 1 = red, 2 = green, 4 = blue)
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1 = 12 VDC warm-white LED (option 2 = 24 VDC)
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1 = gold-plated micro-switch, 1 A 250 VAC, 0.1 mm contact gap, 3 million cycles
The result is an IP54, finger-print-proof button that needs only 18 mA—low enough to meet EN 81-20 standby power limits.
2. Where It Is Used
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Up/down hall stations (LOP) in simplex or group (≤64 floors)
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Car operating panels (COP) for “Door Open”, “Alarm” or floor numbers
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Any controller that supplies 12–24 VDC for LED and accepts a dry-contact N.O. signal
3. Daily Use – What Passengers Feel
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Tactile force 3.8 N ± 0.5 N—perfect for gloved or elderly users
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1.2 mm pre-travel, 0.8 mm over-travel—no finger fatigue
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LED 220 cd m⁻² visible at 6 000 lux mall lighting, yet dimmable to 30 % for night energy codes
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Audible click 45 dB—heard by the hard-of-hearing, quiet enough for hotels
4. Installation – 90-Second Swap
Safety: place lift on INSPECTION, lock main breaker, tag out.
Step 1 – Pop old button with plastic spudger; disconnect 2-pin JST (LED) and 4-pin micro-switch.
Step 2 – Inspect socket latch; if cracked, replace 30 × 30 carrier (Nanjing Zhuye part HZ-30-ABS).
Step 3 – Snap BR27C A311 in until two clicks—diagonal pull test >20 N.
Step 4 – Plug LED: red wire to “+”, reverse will not damage but LED stays dark.
Step 5 – Plug switch: use C (common) and NO (normally open) for momentary call.
Step 6 – Power up, release inspection, press five times—controller must log correct call and LED stays solid 3 s after release.
Step 2 – Inspect socket latch; if cracked, replace 30 × 30 carrier (Nanjing Zhuye part HZ-30-ABS).
Step 3 – Snap BR27C A311 in until two clicks—diagonal pull test >20 N.
Step 4 – Plug LED: red wire to “+”, reverse will not damage but LED stays dark.
Step 5 – Plug switch: use C (common) and NO (normally open) for momentary call.
Step 6 – Power up, release inspection, press five times—controller must log correct call and LED stays solid 3 s after release.
No laptop, no parameter, no download—plug-and-play.
5. Replacement Cycle & PM Check
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High-rise office (>1 500 calls day⁻¹) – inspect quarterly, replace every 24 months
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Residential tower (400–800 calls day⁻¹) – inspect every 6 months, replace every 4 years
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Low-trift villa (≤200 calls day⁻¹) – inspect annually, replace every 6 years
Replace immediately if:
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LED lumen maintenance <70 % (symbol looks grey)
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Tactile force <2 N (no “click”)
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Contact resistance >100 mΩ at 1 A (controller logs “false call”)
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Lens cracked or pictogram worn >50 % dot area (vandal image risk)
6. Extending Life – 3 Pro Tips
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Keep supply 12 VDC ±5 %; 15 V spikes halve LED life
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Clean with 70 % isopropyl, not ammonia glass spray—prevents crazing
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In coastal cities add optional silicone boot (IP65) to stop salt fog
7. Why Buy from Nanjing Zhuye Elevator Parts?
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OEM-exact 27.0 mm ±0.05 mm lattice, no re-cutting faceplates
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Gold contacts 3 million cycles—lab report provided
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Dual stock: 22 000 pcs Nanjing, 8 000 pcs Dubai—2-day DHL to 62 countries
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Bundle kit: button + 30 cm flying lead + socket, 5 % cheaper than single OEM piece
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Warranty: 24 months replacement, no factory RMA wait
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Tech support: 7×24 WhatsApp/WeChat, average reply 11 minutes
Conclusion
The BR27C A311 call button is only 4 cm wide, yet it carries the entire brand image of your elevator. A dead LED or mushy switch tells passengers “this lift is old” long before any door motor fault. Stock a handful of Nanjing Zhuye OEM-grade buttons on every service truck, swap them on schedule, and keep callbacks, complaints and one-star reviews off your dashboard—one quiet, illuminated click at a time.
