Digi-Star HORIZON XLS - Manual (Page 14)

Care, Maintenance and Storage
The indicator can run on either the internal rechargeable
batteries or the 12v power adaptor. Use only the supplied
Franmar power adaptor to power and charge the indicator.
The power adaptor is rated for indoor use only. Charge at
temperatures between 0 to 30 C (32 to 86 F). Charge time is
4 hours. Run time is 8 hours at 24 C with the back light on.
Operating temperature is between -10 to 40 C (14 to 104 F).
If operating below O C ensure the battery is fully charged.
The indicator is environmentally sealed and water proof to IP66.
Do not submerge in water. Do not tamper with or remove the
case screws, this will void the warranty.
Store the indicator in a clean, dry place, out of direct sunlight.
Storage temperature is between -10 to 35 C (14 to 95 F).
Store above 0 C for optimum battery performance.
The lens has a scratch resistant coating however take care when
cleaning. Clean the LCD lens and keypad lightly with a soft clean
cloth and a glass cleaner suitable for use on polycarbonate plastic.
This device complies with part 15 of the FCC rules for
class A digital devices. It can generate, use and radiate
radio frequency energy, and if not used in accordance
with the instructions may cause harmful interference
to radio communications. In a residential area it may
cause harmful interference, which will be required to
be corrected by the user at the their own expense.
FCC Notice
14