Answer by  
                                                                                          LeheckaG (1826)
                                                            
                          
                          
                                                          Portable/temporary audible alarms available for apartments:
 
 burglar/infrared or ultrasonic motion detector,
 
 carbon monoxide,
 
 damp/flooding/water detector,
 
 flammable gas(es) (like liquified petroleum gas or natural gas or propane),
 
 smoke detector,
 
 cold/hot-temperature alarm.