SKU: 95938747230

DAHUA LPH86-ST420-S3 86 inch Smart interactive whiteboard

$45000.00 $50000.00
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Description

DAHUA LPH86-ST420-S3 86 inch Smart interactive whiteboardLPH86 ST420 S3 86 inch Smart interactive whiteboard LPH86 ST420 S3 86 inch Smart interactive whiteboard > 86 inch 4K DLED display with Zero Air Gap technology that delivers a clear image in sharp, vivid colors. Wireless screen sharing from multiple devices with an intuitive, easy to use system. > 8 physical front buttons for quick access to functions. Smooth writing experience, and AI recognition of drawings. Quick file sharing by scanning a QR code,

LPH86-ST420-S3 86 inch Smart interactive whiteboard

LPH86-ST420-S3

86 inch Smart interactive whiteboard

> 86-inch 4K DLED display with Zero Air Gap technology that delivers a clear image in sharp, vivid colors. Wireless screen sharing from multiple devices with an intuitive, easy-to-use system.
> 8 physical front buttons for quick access to functions. Smooth writing experience, and AI recognition of drawings. Quick file sharing by scanning a QR code, with easy file encryption for added privacy and security.
> Switches between Android and Windows, and OPS module is optional..

Built-in System

Operating System

 

Android 14

CPU

 

Quad-core A55

CPU Frequency

 

1.9 GHz

GPU

 

ARM Mali-G52 MP2 (2EE)

RAM

 

8 GB

ROM

 

32 GB

LCD Panel

Panel Dimensions

 

86 inch

Backlight

 

DLED

Aspect Ratio

 

16:9

Brightness

 

400 cd/m² (typ.)

Static Contrast

 

VA: 4000; IPS: 1200

Resolution

 

3840 (H) × 2160 (V)

Viewing Angle

 

178° (H); 178° (V)

Lifespan

 

50,000 hrs

Display Color

 

1.07 Billion colors (10 Bit)

Response Time

 

8 ms (typ.)

Refresh Rate

 

60 Hz

Device Ports

Light Sensor

 

Yes

Front Button

 

8 buttons: Whiteboard, volume,

curtain, touch lock, signal source, navigation bar, homepage, power supply

Front Ports

 

1 × Type -C

1 × HDMI IN

1 × USB Touch

2 × USB 3.2 Gen1 Type-A

1 × 3.5 mm Mic in

1 × Type-C (DP IN (4K@60 fps) + USB 3.0 Host+USB 2.0 device (touch) + PD 65 W); supports wired network sharing

Rear Port

 

1 × Type -C

2 × HDMI IN (4K@60 Hz)

1 × VGA IN

1 × HDMI OUT (4K@60 Hz)

3 × USB Touch

2 × USB3.2 Gen1 Type-A

Audio In: 1 × 3.5 mm Line In

Audio Out: 1 × SPDIF and 1 × 3.5 mm Line out

RS-232: 1 × DB9 port

Micro: 1 × USB

2 × RJ-45

1 × OPS slot

Wi-Fi

 

Yes

Wi-Fi Standard

 

802.11b/g/n/a/ac/ax

Wi-Fi Frequency Range

 

2.4 GHz/5 GHz

MAX Power Transmission (Wi-Fi)

 

CE EIRP:

≤20 dBm@2400–2483.5 MHz; ≤23 dBm@5150–5250 MHz;

≤20 dBm@5250–5350 MHz; ≤27 dBm@5470–5725 MHz;

≤14 dBm@5725–5850 MHz

Bluetooth

 

Yes

Bluetooth Standard

 

EDR, BT2.1/4.2/5.2/5.3

Bluetooth Frequency Range

 

2400–2483.5 MHz

MAX Power Transmission (Bluetooth)

 

CE EIRP:

≤20 dBm@2400–2483.5 MHz;

RFID Modulation Method

 

ASK

RFID Frequency Range

 

13.56 MHz

MAX Power Transmission (RFID)

 

42 dBuA/m @10 m

Function

IR Receiver

 

1

Card Swiping with NFC

 

Yes

Wireless Access Point

 

Wi-Fi 6, 2.4 GHz/5 GHz, supports 802.11 a/b/g/n/ac/ax₩WIFI 5, 2.4 GHz/5 GHz; Supports enabling Hotsport and WIFi at the same time

Touchscreen

Response Time

 

＜10 ms

Touch Technology

 

Infrared

Attachment Method

 

Zero Air Gap

Touch Points

 

21 points for Android, and 40 points for Windows

Touch Accuracy

 

±1 mm (0.04")

Valid Touch

 

2 mm (0.08")

Touch Height

 

3 mm (0.12")

Writing Mode

 

Finger and stylus pen

Communication Mode

 

USB

Anti-light Interference

 

Anti-dazzle

Surface Hardness

 

≥9 H

Touch Resolution

 

32,767 × 32,767

Speaker

Built-in Speaker

 

2 × full-frequency speaker

Power

 

2.0 sound channel, front-end: 2 × 15 W₩2.0 sound channel, front-end: 2 × 20 W

General

Power Supply

 

100–240 VAC, 50/60 Hz

Power Consumption

 

86- inch: 185 W (typ.); 350 W (max, without OPS and Quicker Changer)

Standby Power Consumption

 

≤0.5 W

Operating Temperature

 

0 °C to +40 °C (+32 °F to +104 °F)

Storage Temperature

 

–10 °C to +50 °C (+14 °F to +122 °F)

Operating Humidity

 

10%–90% (RH)

Storage Humidity

 

10%–90% (RH)

Product Material

 

Metal

Glass

 

4 mm anti-dazzle tempered glass

Casing Color (Frame/Rear)

 

Black frame for left and right, silver frame for top and bottom and black frame for back

Product Dimensions

 

1,953.2 mm × 121.3 mm × 1,187.9 mm (79.90" × 3.66" × 46.77") (L × W × H)

Frame Size

 

Top frame: 27 mm (1.06"); Left and right frame: 16.5 mm (0.65"); Bottom frame: 68 mm (2.68")

Packaging Dimensions

 

2,044.0 mm × 200.0 mm × 1,280.0 mm (80.47" × 7.87" × 50.39") (L × W × H)

Net Weight

 

62.0 kg (136.69 lb)

Gross Weight

 

77 kg (169.76 lb)

Holes Distance

 

800 mm × 400 mm (31.50" × 15.75")

Installation

 

Wall mount or mobile bracket

Packing List

 

1 × Smart interactive whiteboard;

1 × Power cord;

2 × Passive stylus pen;

1 × HDMI cabe;

1 × Quick start guide;

1 × Wall mount bracket (already installed on the whiteboard);

1 × Accessory package;

1 × Remote control;

1 × Legal and Regulatory Information

Certification

Certifications

 

CE
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 95938747230

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4.1 ★★★★★
Based on 16 reviews
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Product Reviews
D
Verified Purchase
Danielle Chen
Carnegie, US
★★★★★ 5
Perfect Balance of Comfort, Support, and Style!
Size: 934-Z, Color: Black, Size: 934-Z, Color: Black
I’ve been using this chair for a few weeks now, and I’m genuinely impressed with how much of a difference it’s made in my workspace. The mesh back is one of my favorite features—it offers excellent breathability and prevents that sticky, overheated feeling you sometimes get with solid-back chairs, even after sitting for hours. The seat cushion is firm enough to give proper support but still has enough give to keep me comfortable through long workdays. It feels like the perfect middle ground between soft and supportive. The adjustable foot ring has been a complete game changer for me. I use a taller desk setup, and having somewhere to rest my feet makes a huge difference in posture and overall comfort. Whether I’m sitting upright for focused work or leaning back to read, it’s always at the right height. The flip-up armrests are another smart design choice. When I’m typing, I like to have them down for support, but when I’m done, I can flip them up and push the chair neatly under my desk—saving space and keeping things tidy. The casters roll smoothly on both hardwood and rugs, so I can move around easily without scraping the floor or getting stuck. The overall build quality feels solid and sturdy, with no wobbles or creaks. Assembly was surprisingly quick—everything was clearly labeled, the parts felt durable, and it only took me about 20 minutes from opening the box to sitting in the chair. The sleek, modern look is another big plus—it blends in perfectly with my home office décor without feeling bulky or taking up too much visual space. If you’re looking for a chair that combines comfort, ergonomic support, durability, and style, I can’t recommend this one enough. It’s equally great for work, studying, or just relaxing at your desk, and it’s definitely been worth every penny.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 12, 2025
S
Verified Purchase
sleepywan
Pawtucket, US
★★★★★ 3
OK for the price, but overall comfort is avergae
Size: 934-Z, Color: Mustard
Easy to put together, color (mustard) accurate to images, and while I understand this is not a high-end chair, I feel like it still needs to be rated for its quality. Pros: the seat cushions are fairly comfortable and it rolls well. Adjustable footrest is easy enough and mostly sturdy. Cons: For a tall office chair, it doesn't go up high enough. I actually had to lower my standing desk to sit at it, which then isn't where I want it when I'm standing now. It's also a bit wobbly. The seat area's attachment to the post isn't as solid as it should be for a tall chair, so while sitting, it does tend to lean/slope forward and wobble side to side. The lumbar support is not adjustable, so I'm not even really sure what it does. And the armrests are not very comfortable to use. Since they are hard plastic, they are just a bit too rigid to rely on for any comfort. They are basically there to hold on to when you're getting out of the chair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
M
Verified Purchase
Mel
Omaha, US
★★★★★ 4
Good Value for a Tall Chair
Size: 934W-Z, Color: White
I have received this chair just today and would like to give my first impressions of it. Height is super adjustable as well as the foot rest. My desk is very tall (~34 inches vs standard ~29 inches) and does not suit a standard height chair. This chair's height is enough to sit comfortably at mybut also still having adjustment to be even higher. Lumbar support is a manual adjustment that can be adjusted by sliding the lumbar piece up or down and it seems it can be tiled as well. No reclining feature or slight backrest tilt adjustment. I'm used to my chairs reclining so it feels a little awkward siting in a flat base and straight backrest. I feel like I'm sitting too forward or leaning forward slightly but is probably something I can get use to. Easy to put together and feels very sturdy. Plastic parts of chair are made from a really sturdy plastic, like playhouse plastic materials. Wheels roll around carpet easily. Mesh seems to be a strong material, though the mesh feels kind itchy on bare skin. Overall, I think this is a good chair to get if you're needing a tall chair for a good value and can sacrifice no backrest tilt.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
T
Verified Purchase
Tram
Fort Morgan, US
★★★★★ 5
Excellent value for money!
Size: 934W-Z, Color: Black, Size: 934W-Z, Color: Black
I absolutely love this office chair! I needed a chair that could support my standing desk without sacrificing comfort, and this one completely exceeded my expectations. It's incredibly sturdy and durable, well-made, and the height adjustment is super convenient, making it easy to find the perfect fit. Even during long hours of work, the seat is comfortable, and the ergonomic design effectively reduces pressure on my back and legs. I love its clean, modern look—it fits my home office perfectly. Assembly was quick and easy, and for this price, the quality is absolutely fantastic!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
L
Verified Purchase
Lisa Bjornstad
Los Angeles, US
★★★★★ 5
Perfect chair!
Size: 934-Z, Color: Blue, Size: 934-Z, Color: Blue
I have an adjustable-height desk (also purchased from Amazon) and needed a drafting chair for those times when my body gets tired of standing. This chair fits the bill and then some! I put it together myself; it took me about an hour, but would take me about half that next time, since now I know what to do (and what NOT to do!). All the parts were there; there are even spare parts (see photo). All the holes were drilled in exactly the right places, too, which isn't always the case when I buy things from Amazon (my standing desk is a great example). The chair fits me; I'm short (5'3.5"), and often the seats of furniture are too deep for me to rest my feet flat on the floor. The depth of the seat on this chair is just a little over 18 inches, and with the adjustable footrest ring, it's perfect. I don't think a tall or heavy person would fit in it, to be honest. But it's perfect for those of us who are vertically challenged. I love that it glides easily on my hardwood floors and that it turns 360 degrees. The chair comes in numerous luscious colors, so take your pick! It is very sturdy, has good lumbar support, and the seat and seat back are very comfortable. And the arms flip up, which was an absolute must when I was shopping for this chair. I got it on sale, too -- $109.00 -- and I'm delighted with this purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026

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