Product comparison · 2 fingerprint readers

Dahua Technology DHI-ASM202 fingerprint reader USB 2.0 vs HP 3GS21AA fingerprint reader USB 2.0 Black

Key differences

Scan area
- DHI-ASM202 fingerprint reader USB 2.0:18 x 15 mm
- 3GS21AA fingerprint reader USB 2.0 Black:18 x 1280 mm
Width
- DHI-ASM202 fingerprint reader USB 2.0:40 mm
- 3GS21AA fingerprint reader USB 2.0 Black:162 mm
Depth
- DHI-ASM202 fingerprint reader USB 2.0:66.6 mm
- 3GS21AA fingerprint reader USB 2.0 Black:30 mm
Height
- DHI-ASM202 fingerprint reader USB 2.0:87.5 mm
- 3GS21AA fingerprint reader USB 2.0 Black:20.7 mm
DC input voltage
- DHI-ASM202 fingerprint reader USB 2.0:3.8 - 7 V
- 3GS21AA fingerprint reader USB 2.0 Black:5 V
Product colour
- DHI-ASM202 fingerprint reader USB 2.0:Silver
- 3GS21AA fingerprint reader USB 2.0 Black:Black
Operating temperature (T-T)
- DHI-ASM202 fingerprint reader USB 2.0:0 - 55 °C
- 3GS21AA fingerprint reader USB 2.0 Black:-20 - 70 °C
Operating relative humidity (H-H)
- DHI-ASM202 fingerprint reader USB 2.0:20 - 90%
- 3GS21AA fingerprint reader USB 2.0 Black:5 - 93%

Differences highlightedShow differences only

Comparison of DHI-ASM202, 3GS21AA
16 specifications	A Dahua Technology DHI-ASM202 fingerprint reader USB 2.0 Model DHI-ASM202 View product	B HP 3GS21AA fingerprint reader USB 2.0 Black Model 3GS21AA View product
Technical details1 differ
Interface	USB 2.0	USB 2.0
Scan areaDiffers	18 x 15 mm	18 x 1280 mm
Maximum scan resolutionKnown for one	500 x 500 DPI	Unknown — not stated by the source
Sensor typeKnown for one	Optical sensor	Unknown — not stated by the source
Verification (1:1) timeKnown for one	1.5 s	Unknown — not stated by the source
Greyscale levelsKnown for one	Unknown — not stated by the source	256
HP segmentKnown for one	Unknown — not stated by the source	Business
Weight & dimensions3 differ
WidthDiffers	40 mm	162 mm
DepthDiffers	66.6 mm	30 mm
HeightDiffers	87.5 mm	20.7 mm
WeightKnown for one	Unknown — not stated by the source	79 g
Power1 differ
USB powered	Yes	Yes
DC input voltageDiffers	3.8 - 7 V	5 V
Colour1 differ
Product colourDiffers	Silver	Black
Operational conditions2 differ
Operating temperature (T-T)Differs	0 - 55 °C	-20 - 70 °C
Operating relative humidity (H-H)Differs	20 - 90%	5 - 93%

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.