Product Info
                                                                                                                                            Automotive  Module  Series 
   AG521R-NA  QuecOpen
Hardware  Design 
AG521R-NA_QuecOpen_Hardware_Design                                                                                        11  / 104 
1.1.  Safety Information 
The following safety precautions must be observed during all phases of operation, such as usage, service or repair 
of any cellular terminal or mobile incorporating the module. Manufacturers of the cellular terminal should notify 
users and operating personnel of the following safety information by incorporating these guidelines into all manuals 
of the product. Otherwise, Quectel assumes no liability for customers’ failure to comply with these precautions. 
Full attention must be paid to driving at all times in order to reduce the risk of an accident. 
Using a mobile while driving (even with a handsfree kit) causes distraction and can lead to an 
accident.  Please  comply  with  laws  and  regulations  restricting  the  use  of  wireless  devices 
while driving. 
Switch  off  the  cellular  terminal  or  mobile  before  boarding  an  aircraft.  The  operation  of 
wireless appliances in an  aircraft is  forbidden  to prevent interference with communication 
systems. If there is  an  Airplane  Mode,  it should be  enabled prior  to  boarding an  aircraft. 
Please  consult  the  airline  staff  for  more  restrictions  on  the  use  of  wireless devices  on  an 
aircraft.   
Wireless devices may cause interference on sensitive medical equipment, so please be aware 
of the restrictions on the use of wireless devices when in hospitals, clinics or other healthcare 
facilities.   
Cellular  terminals  or  mobiles  operating  over  radio  signal  and  cellular  network  cannot  be 
guaranteed to connect in  certain conditions, such  as when the mobile bill is unpaid or the 
(U)SIM card is invalid. When emergent help is needed in such conditions, use emergency call 
if the device supports it. In order to make or receive a call, the cellular terminal or mobile 
must be switched on in a service area with adequate cellular signal strength. In an emergency, 
the  device  with  emergency  call  function  cannot  be  used  as  the  only  contact  method 
considering network connection cannot be guaranteed under all circumstances. 
The  cellular  terminal  or  mobile  contains  a  transceiver.  When  it  is  ON,  it  receives  and 
transmits radio frequency signals. RF interference can occur if it is used close to TV sets, 
radios, computers or other electric equipment. 
In locations with explosive or potentially explosive atmospheres, obey all posted signs and 
turn  off  wireless  devices  such  as  mobile  phone  or  other  cellular  terminals.  Areas  with 
explosive or potentially explosive atmospheres include fuelling areas, below decks on boats, 
fuel or chemical transfer or storage facilities, and areas where the air contains chemicals or 
particles such as grain, dust or metal powders.   










