Casio DT-900 - Manual (Page 29)

E-31
Interface: Serial I/F
Control Protocol: Full-duplex
Synchronization: Asynchronous
Speed: 1,200 to 115,200 bps
• Power Supply
Main: Two AA (LR6)-size alkaline dry cells or one lithium-ion battery pack
Alkaline Battery life:
- Approx. 150 hours (using a new set of AA (LR6)-size alkaline
batteries at normal temperature at a key standby/calculation/read
operation ratio of 20:1:1)
- Approx. 30 hours (using a new fully charged lithium-ion battery
pack at normal temperature at a key standby/calculation/read
operation ratio of 20:1:1)
Backup: One CR2032 lithium battery
Battery life: Approx. one month (when only the backup battery is supplying
backup power)
• Size and Weight
Dimensions: Forward-facing reader port model
Approx. 56 <69> (W) x 173 (D) x 21.4 <32.5> (H) mm
Down-facing reader port model
Approx. 56 <69> (W) x 179 (D) x 21.4 <41.4> (H) mm
Figures in < > brackets don't include display and protrusions.
Weight: Forward-facing reader port model: 198 g
Down-facing reader port model: 210 g
• Operating Environment
Operating temperature: -5 to 50° C
Operating humidity:
30% to 80% RH
Water proofing: IPX2
Drop test height: 150 cm
Lithium-Ion Battery Pack (DT-923LI)
Power Supply: Rated Capacitance: 600 mAh
Rated Voltage: 3.6 V
Dimensions: Approx. 29 (W) x 50.2 (D) x 14.5 (H) mm
Weight: Approx. 30 g