1.BATTERY: 2*9V                                                              

Type: 6F22

S006P OR EQUIVALENT                                   

2.OPERATING CURRENT: STANDBY-30Ma             

MAX-60mA

3.OPERATING VOLTAGE RANGE: 7.1-9.6V            

4.OPERATING FREQUENCY: 7.5KHZ+/1KHZ           

5.SENSITIVITY: Min.13cm (Test coin C25)               

6.AUDIO FREQUENCY:                                                 

262Hz(do)                                                 

294Hz(re)                                                  

330Hz(me)                                                       

              349Hz(fa)                                                        

              392Hz(so)                                                      

              440Hz(la)                                                     

              494Hz(ti)                                                      

              523Hz(do)                                                      

7.TEMPERTURE RANGE   -20^。C-60^。C                        

8.SIZE: 550mm(L)*355mm(w)*153mm(H)                     

9.GROSS WEIGHT: 3Kg