Specification Power 9v standard or rechargeable battery Operating frequency 25khz Operating current 50ma Operating voltage 9v Recharging voltage 12v dc or 9v ac Operating temperature -5 to +55 Net weight 210g Dimensions 390mm(l)x65mm(w)x30mm(h) Out packing: 43*41*27cm gross weight: 9.9kg and 20pcs per carton