User's Manual
Operate Sero in a place where the temperature is between 0º and 35º C
(32º to 95º F). Low - or high - temperature conditions might temporarily
shorten battery life or cause Sero to temporarily stop working properly.
Avoid dramatic changes in temperature or humidity when using Sero, as
condensation may form on or within Sero.
Store Sero in a place where the temperature is between -20º and 45º C (-4º
to 113º F). Don’t leave Sero in your car, because temperatures in parked cars
can exceed this range.
When you’re using Sero or charging the battery, it is normal for Sero to get
warm. The exterior of Sero functions as a cooling surface that transfers heat
from inside the unit to the cooler air outside.
The rechargeable battery in Sero should be replaced only by Hisense
Service.
A warning that batteries (battery pack or batteries installed) shall not be
exposed to excessive heat such as sunshine, re or the like.
In order to maximize the battery lifespan of Sero, fully charging and
discharging the battery every three months is recommended if Sero is not
used frequently.
In order to maximize the battery lifespan of Sero, to keep the battery level at
around 50% is recommended if Sero is not used frequently.
If Sero has not been used for a long period of time, the battery might be in
over-discharge protection mode and may take longer to charge the battery.
This device is restricted to indoor use when operating in the 2.4 to 2.483
GHz frequency band.
Never remove or insert microSD card while the Sero is powered on.
The manufacturer is not responsible for any radio or TV interference caused
by unauthorized modications to this equipment. Such modications could
void the user’s authority to operate the equipment.
Sero North America edition is limited using channel 1-11. This limited
operation can be only set by software and was done before the product
down from the product line. All the products for North America marketing
were embedded this limited before shipping. Customers have no way to
choose the channel 12 & 13.