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ALF ARK-550 Handheld terminal



ALF ARK-550 is designed to be an easy-to-use and reliable handheld terminal.
Its light weight ergonomic form provides the choice to connect using serial port, infrared, and analogue modem, whichever preferable at work. With its long lasting operation time of up to 150 hours, ALF ARK-550 is a dependable handheld terminal at work.


Light and Ergonomic

Slim and weighing only 185 g (0.4 lb), the design allows operators to utilize the ARK-550 in one hand with minimum fatigue even in extended work hours.

Easy to Read

Mounted with a 2 inch (5.6 cm) monitor that is easy to read for operators.

Multiple Interfaces

Supports serial port RS-232C, infrared IrDA ver.1.2, and analogue modem to provide a secure choice of preferred data transfer method to PC, printers, and M2M devices.

Available in 4 Models

Choose from models with 4MB of memory (with modem / without modem) or 8MB of memory (with modem / without modem).

Long Lasting

Up to 150 hours operational with two AA batteries.


CPU32 bit RISC
MemoryFROM2 MB
DisplaySize2.2 inch (5.6 cm)
TypeFSTN Liquid crystal display
Resolution128 x 160 dot
Number of LettersKanji 8 figures x 8 lines / ANK 16 figures x 16 lines
ScannerTypeVisible light semiconductor laser
Compatible SymbologiesWPC (JAN/EAN/UPC), CODE-39, NW-7, CODE-93, CODE-128, GS1-128 (EAN-128), Industrial 2 of 5, Interleaved 2 of 5, GS1 DataBar Omnidirectional, GS1 DataBar Truncated, GS1 DataBarStacked, GS1 DataBar Stacked Omnidirectional, GS1 DataBar Limited, GS1 DataBar Expanded
InputKeyboardPower key, Numeric key, Function Key, Trigger Key
InterfaceRS-232C115,200 bps
InfraredIrDA Ver.1.2 standard
Modem56 kbps
IndicatorVibration motorNotification
PowerStandardAA Alkaline batteries x 2AA Nickel hydrogen batteries x 2
Operational time150 hrs (*1)100 hrs (*1)
BackupCoin type Lithium Ion battery
Usage EnvironmentOperatingTemperature: 0°C to 40°C (32°F to 104°F)
Relative humidity: 20% to 80% (non condensing)
StorageTemperature: -10°C to 50°C (14°F to 122°F)
Relative humidity: 20% to 90% (non condensing)
Drop resistant1.5 m (5 ft) drop to concrete (*2)
Physical Dimensions150 mm L x 52 mm W x 27 mm H
(5.9 in. L x 2.0 in. W x 1.1 in. H)
Weight185 g (0.41 lb) including batteries
*1 Value is from 2 scans per 10 sec. in room temperature and set at LCM back light OFF.
*2 Value is the result from an actual drop resistance test of 1 drop per 6 sides on concrete surface and does not necessarily guarantee the product from damage.