Environment
Operating Temperature:
0° to + 122° F (-17° to 50° C)
Humidity: 5 to 95% RH, non-condensing
Power Supply
Power Supply: Internal rechargeable Li-ion battery
External Backup Battery
pack with 5 C cells (Optional)
Battery Operating Life: 8 hours at 32° F without backlight
on (Internal battery)
Battery Charger: External, in-line, 110 – 240
VAC, 50 / 60 hertz universal
type with charger indicator
(8 hours maximum to full
charge)