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	SFM3000 Series	SFM3500 Series	SFM4000 Series	SFM5000 Series
Image
Sensor Types	Optical, capacitive	Optical, capacitive	Capacitive swipe, optical	Optical
CPU	400MHz DSP	400MHz DSP	400MHz DSP	533 MHz DSP
Flash Memory	1 MB (expandable up to 4 MB)	4MB	Swipe: 512kbype (expandable up to 4M) optical: 1M (expandable up to 4M)	1 MB (expandable up to 4 MB)
EER	< 0.1%	< 0.1%	< 0.1%	< 0.1%
Enrollment Time	800 msec	800 msec	800 msec	600 msec
1:1 Verification Time	800 msec	800 msec	800 msec	600 msec
1:1000 Identification Time	970 msec	970 msec	970 msec	760 msec
Template Size	256 ~ 384 bytes (configurable, 384 bytes default)	256 ~ 384 bytes (configurable, 384 bytes default)	256 ~ 384 bytes (configurable, 384 bytes default)	256 ~ 384 bytes (configurable, 384 bytes default)
Template Capacity	1,900 (9,500 at 4MB)	9000	Optical: 1,900 Capacitive swipe: 300	1,900 (9,500 at 4MB)
Host Commun- ication	Async. serial (3.3V CMOS level)	RS232 or RS422/485	Async. serial (3.3V CMOS level)	Async. serial (3.3V CMOS level)
Aux Commun- ication	N/A	Async. serial (TTL level) or RS232	N/A	N/A
Wiegand Interface	N/A	1 x input port, 1 x output port	N/A	N/A
External I/O	8 ports configurable digital I/O	3 x TTL input, 3 x TTL output, 3 x LED output	8 ports configurable digital I/O	8 ports configurable digital I/O
Encryption	256 bit AES	256 bit AES	256 bit AES	256 bit AES
Supply Voltage	3.3 Vdc regulated	5 Vdc regulated	3.3Vdc regulated (optical,swipe) 4~10Vdc unregulated (swipe)	3.3 Vdc regulated
Board Size (L x W x H)	55 x 40 x 8 mm	63 x 43 x 10 mm	26 x 26 x 6.4 mm	55 x 40 x 8 mm