Dahua Technology LM27-B221 computer monitor vs Dahua Technology LM27-B221S computer monitor

Comparison of LM27-B221, LM27-B221S

93 specifications	A Dahua Technology LM27-B221 computer monitor Model LM27-B221 View product	B Dahua Technology LM27-B221S computer monitor Model LM27-B221S View product
Displayidentical
Display diagonal	68.6 cm (27")	68.6 cm (27")
Display resolution	1920 x 1080 pixels	1920 x 1080 pixels
Native aspect ratio	16:9	16:9
Display technology	LED	LED
Touchscreen	No	No
HD type	Full HD	Full HD
Panel type	IPS	IPS
LED backlight	Yes	Yes
Backlight type	Edge LED	Edge LED
Display brightness (typical)	250 cd/m²	250 cd/m²
Response time (MPRT)	1 ms	1 ms
Screen shape	Flat	Flat
Supported graphics resolutions	1920 x 1080 (HD 1080)	1920 x 1080 (HD 1080)
Supported video modes	1080p	1080p
Contrast ratio (typical)	1200:1	1200:1
Maximum refresh rate	144 Hz	144 Hz
Viewing angle, horizontal	178°	178°
Viewing angle, vertical	178°	178°
Display number of colours	16.7 million colours	16.7 million colours
Pixel pitch	0.3114 x 0.3114 mm	0.3114 x 0.3114 mm
Pixel density	81.59 ppi	81.59 ppi
Viewable size, horizontal	59.8 cm	59.8 cm
Viewable size, vertical	33.6 cm	33.6 cm
Display diagonal (metric)	69 cm	69 cm
Haze rate	25%	25%
Surface hardness	3H	3H
Colour gamut standard	NTSC	NTSC
NTSC coverage (typical)	72%	72%
Performanceidentical
NVIDIA G-SYNC	No	No
AMD FreeSync	No	No
Low Blue Light technology	Yes	Yes
Multimedia1 differ
Built-in speaker(s)Differs	No	Yes
Number of speakersKnown for one	—Unknown — not stated by the source	2
RMS rated powerKnown for one	—Unknown — not stated by the source	2 W
Built-in camera	No	No
Designidentical
Market positioning	Office	Office
Product colour	Black	Black
Front bezel colour	Black	Black
Illuminated stand	No	No
Feet colour	Black	Black
Ports & interfacesidentical
Built-in USB hub	No	No
HDMI	Yes	Yes
HDMI ports quantity	1	1
HDMI version	2.0	2.0
DisplayPorts quantity	1	1
DisplayPort version	1.4	1.4
Headphone out	Yes	Yes
Networkidentical
Wi-Fi	No	No
Bluetooth	No	No
Ergonomicsidentical
VESA mounting	Yes	Yes
Panel mounting interface	75 x 75 mm	75 x 75 mm
Wall mountable	Yes	Yes
Height adjustment	No	No
Tilt adjustment	Yes	Yes
Tilt angle range	-5 - 15°	-5 - 15°
Plug and Play	Yes	Yes
Poweridentical
Energy efficiency class (SDR)	E	E
Energy efficiency class (HDR)	Not available	Not available
Energy consumption (SDR) per 1000 hours	21 kWh	21 kWh
Power consumption (typical)	27 W	27 W
Power consumption (standby)	0.5 W	0.5 W
Power consumption (max)	29 W	29 W
Power consumption (off)	0.3 W	0.3 W
Input current	3 A	3 A
AC adapter output voltage	12 V	12 V
Power supply type	External	External
Energy efficiency scale	A to G	A to G
AC input voltageKnown for one	240 V	—Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Storage temperature (T-T)	-20 - 60 °C	-20 - 60 °C
Operating relative humidity (H-H)	10 - 85%	10 - 85%
Storage relative humidity (H-H)	5 - 90%	5 - 90%
Weight & dimensionsidentical
Width (with stand)	614.1 mm	614.1 mm
Depth (with stand)	183.9 mm	183.9 mm
Height (with stand)	458.4 mm	458.4 mm
Width (without stand)	614.1 mm	614.1 mm
Depth (without stand)	45.1 mm	45.1 mm
Height (without stand)	363 mm	363 mm
Weight (without stand)	3.84 kg	3.84 kg
Bezel width (side)	1.9 mm	1.9 mm
Bezel width (top)	1.9 mm	1.9 mm
Bezel width (bottom)	1.61 cm	1.61 cm
Packaging dataidentical
Package width	694 mm	694 mm
Package depth	114 mm	114 mm
Package height	458 mm	458 mm
Package weight	5.29 kg	5.29 kg
Packaging contentidentical
Stand included	Yes	Yes
Cables included	HDMI	HDMI
Power adapter included	Yes	Yes
Other featuresidentical
Automatic brightness control	No	No
Compliance certificates	CE, Electromagnetic Compatibility (EMC), Low Voltage Directive (LVD)	CE, Electromagnetic Compatibility (EMC), Low Voltage Directive (LVD)
E-manual	Yes	Yes
Technical detailsidentical
Native refresh rate	60 Hz	60 Hz

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.