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HP Digital Projector sb21

HP Digital Projector sb21
alaScore 75

7 reviews

Jul, 2018

alaTest has collected and analyzed 7 reviews of HP Digital Projector sb21. The average rating for this product is 3.5/5, compared to an average rating of 4.2/5 for other Projectors for all reviews. Views about the usability and size are generally positive, but there are some critical opinions about the noise.

price, size, usability


We analyzed user and expert ratings, product age and more factors. Compared to other Projectors the HP Digital Projector sb21 is awarded an overall alaScore™ of 75/100 = Good quality.

Review analysis

(Based on 7 reviews)

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User Reviews  

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Consumer review ( review summary for HP Digital Projector sb21


alaTest has collected and analyzed 3 user reviews of HP Digital Projector sb21 from The average user rating for this product is 4.0/5, compared to an average user rating of 4.2/5 for other Projectors on Reviewers really like the size. The price is also mentioned favorably.

price, size

100% of the reviews on give this product a positive rating.

This summary is based on the products: HP SB21 Digital Video ProjectorHP SB21 Digital Video Projector

Jul, 2018

Expert review by : Matthew Overington (

HP sb21 Digital Projector


HP's sb21 Digital Projector is clearly pitched at a mobile presenter. It's one of the smallest projectors we've ever seen, weighing in at just 1.2kg a...

Small size, quick, easy setup

Loud during operation, no printed manual

If you have to lug a projector from meeting to meeting all day, HP's sb21 Digital Projector is a great bet, due to its diminutive size and presentation functions.

Sep, 2005

Expert review by (

HP Digital Projector SB21


The weight of the HP Digital Projector SB21 (2.2 pounds) makes it the lightest of the bunch, and the DLP chip yields outstanding contrast results. But at 722 lumens, the SB21 is the dimmest model we reviewed, and its premium price diminishes its...

Product Specifications

The HP digital projector sb21 is designed for the business professional who needs to project a high-quality image with ease. This quiet, lightweight projector ensures worry-free professional presentations with HP reliability, compatibility, and versatility. Lighter than a laptop - at just over two pounds and 8 x 5.5 x 2 inches in size, the HP digital projector sb21 is designed for the mobile professional; it lets you present a high quality image in a compact design that won't weigh you down. You don't give up brightness - this microportable projector that fits into a purse or briefcase also projects a bright, sharp clear image with 1,000 comparable lumens, true SVGA resolution, and an outstanding contrast ratio of 1800:1. The 1,000 comparable lumens, true SVGA resolution, and high contrast ratio of the HP digital projector sb21 mean you project a bright, sharp, clear image-for high-quality presentations in any setting.

Audio Output

Type: None

Dimensions & Weight


Display (Projector)

Class:Digital projector
Colour Support:24-bit (16.7 million colours)
Display Resolution Abbreviation:SVGA
Image Brightness:1000ANSI lumens/800ANSI lumens
Image Contrast Ratio:1800:1/400:1
Max Image Size:6.2m / 620cm/7.6m / 760cm
Max Resolution:800 x 600
Max Screen Distance:12m
Min Image Size:0.6m / 60cm
Min Screen Distance:1m
Type:DLP Projector


Compatibility:Mac / PC
Country Kits:Ireland / United Kingdom/United States
Packaged Quantity:1
Product Line:HP Digital Projector

Operational conditions

Operating relative humidity (H-H):
Storage relative humidity (H-H):

Other features

Acoustic pressure emissions:
Non-operating relative humidity (non-condensing):
Power Supply:


Mean time between failures (MTBF):

Projector Lamp

Bulb life cycle:20months
Bulb type:P-VIP

Service & Support

Type:2 years warranty

Video Input

Analogue Video Format:NTSC / PAL / SECAM/NTSC 3.58 / NTSC 4.43 / PAL / PAL-B/G / PAL-D / PAL-H / PAL-I / PAL-M / PAL-N / SECAM / SECAM B/G / SECAM D/K / SECAM K1 / SECAM L/NTSC 3.58 / NTSC 4.43 / PAL / PAL-M / PAL-N / SECAM/NTSC 3.58 / NTSC 4.43 / PAL-B/G / PAL-D / PAL-H / PAL-I / PAL-M / PAL-N / SECAM / SECAM L
Analogue video Signal:Component video / Composite video / RGB / S-Video/Composite video / RGB / S-Video