DoorBird D21-Serie Installationsanleitung Seite 5

∙ Do not put any metal or flammable material into the device.
Fire, electric shock, or device trouble could result.
∙ Existing wiring such as chime wiring, etc. may contain high voltage
AC electricity. Damage to the device or electric shock could result.
Wiring and installation must be done by a qualified eletrician.
∙ When mounting the device on a wall or ceiling, install the device in
a convenient location, but not where it could be jarred or bumped.
Injury could result.
∙ On devices with ground terminals, connect to an earth ground.
Otherwise fire or malfunction could result.
∙ On devices with plastic or real glass, do not put high pressure on
the glass. If fractured, injury could result.
∙ On devices with LCD, if LCD is punctured, do not allow contact
with the liquid crystal inside. Injury could result. If necessary, gargle
your mouth and clean your eyes or skin with clear water for at least
15 minutes and consult your doctor.
∙ Do not put anything on the device or cover the device with cloth,
silicone, glue, coating, separate covering etc. Fire or device issues
could result.
∙ Do not install the device in any of the following locations. Fire, electric
shock, or device trouble could result.
- Places under direct sunlight or places near heating equipment that
varies in temperature.
- Places subject to dust, oil, chemicals, hydrogen sulfide (hot spring).
- Places subject to moisture and humidity extremes, such as bathrooms,
cellars, greenhouses, etc.
- Places where the temperature is very low, such as inside a refrigerated
area or in front of an air conditioner.
- Places subject to steam or smoke (e.g. near heating or cooking surfaces).
- Where noise generating devices such as dimmer switches or inverter
electrical appliances are closeby.
- Locations subject to frequent vibration or impact.
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