1.Operating Voltage: 9V battery(independence type)                                                    
 2.Static Current: ≤10uA(independence type)                                                        
 3.Alarm Current: ≤20mA                                                                                    
 4.Alarm Indication: red LED flash                                                                    
 5.Sound Level: ≥85dB/m(independence type)                              
 6.Operating Temperature: -10℃~+50℃                                                        
 7.Operating Humidity: ≤95%RH                                                                    
 8.Detecting Area: 20 square meter                                                                
 9.Alarm Output: sound and flash alarm(independence type)                              
10.Radio Distance: 100m(open area, wireless type)                                                  
11.Size: 107mm dia. *35mm deep                                                                
12.Execute Citerion: GB4715-1993