| Length :  | 
                        130CM | 
                        162CM | 
                        200CM | 
                      
                      
                        | Beam characteristics :  | 
                        Pulsed infrared triplicate   beams | 
                      
                      
                        | Interruption period :  | 
                        50~700msec(selectable) | 
                      
                      
                        | Power input :  | 
                        DC12~24V/AC11~18V | 
                      
                      
                        | Alarm period :  | 
                        2sec(±1)nominal | 
                      
                      
                        | Alarm output :  | 
                        Form C relay (AC/DC30V 0.5A   max) | 
                      
                      
                        | Tamper switch :  | 
                        N.C.Opens when cover is removed (receiver   only) | 
                      
                      
                        | Operating   Temperature :  | 
                        -25℃~+55℃ | 
                      
                      
                        | Environment Humidity :  | 
                        95% max | 
                      
                      
                        | Alignment angle :  | 
                        ±0°vertical,±90°horizontal | 
                      
                      
                        | Mounting : | 
                        Wall or pole | 
                      
                      
                        | Appearance :  | 
                        Aluminium Alloy and PC Resin(Black) |