VOLTAGE12V/24VCURRENT<4AFREQUENCY450HZSOUND LEVEL110dBCOLORBLACKMATERIALPALSTICMOQ100PCSQTY/CTN20PCSG.W.20PCSCTN SIZE69*46*32.5CMGood Quality Assurance: 100% tested before shipment.Good Service: We treat clients as friends with our best and honest service.FAQ:1.Minimum Order Quantity (MOQ): Normally the MOQ is not limited, small order can be sent by express!2.Payment Terms :TT,30% DEPOSIT,BALANCE PAY BEFORE DELIVERY.3. Trail order can be accepted.4. SHIPPING DATE:30DAYS AFTER WE GET YOUR DEPOSIT.