4 5khz piezo ultrasonic speakers

{"cid":"91198955","title":"41mm 90dB 4.5KHZ Piezo Ultrasonic Speakers Electronic Alarm Buzzer","imgUrl":"https:\/\/img.ismap.com\/nimg\/2b\/7a\/762a005e13c905f52eae7d5a6391-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"TAIMI","Model Number":"TM-3825 4140 5120 20khz 25khz ultrasonic speaker","Minimum Order Quantity":"1000PCS","Delivery Time":"10~15days","Certification":"ISO9001\u3001ISO14001\u3001IATF16949","Place of Origin":"CHINA","Payment Terms":"T\/T","Supply Ability":"1000000\/month","Packaging Details":"safe packaging","Material":"ABS","Rated current":"1mA Max","Operating voltage":"3-24V Piezo Electronic Alarm Buzzer","Rated voltage (vp-p)":"3~24VDC","Function":"ultrasonic speaker for pest repellent","Min Sound Output":"95dB 12VDC\/30cm","Warrenty":"3 years","Operating temperature":"-20\u2103 to 70\u2103","Type":"ultrasoinc speaker","Sound Output at 10cm (dB)":"\u226595","Weight":"6 g","Resonant Frequency":"3.7\u00b10.5KHz","Size \/ Dimension":"41x3mm","Efficiency - Type":"Sound Pressure Level (SPL)","Temp. range":"-20\u2103~60\u2103"}}

{"cid":"91196390","title":"Silver Piezo Ceramic Ultrasonic Transducer For Dental Cleaning Ultrasonic Cleaner","imgUrl":"https:\/\/img.ismap.com\/nimg\/fe\/86\/f0ab21f05be096c775ae83737f50-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"YUJIE","Model Number":"HJ-3415","Minimum Order Quantity":"100 Piece\/Pieces","Delivery Time":"3~30 working days","Place of Origin":"China","Supply Ability":"35000 Piece\/Pieces per Month","Packaging Details":"Carton #: 38x32x18cm","Certification":"ISO9001","Payment Terms":"T\/T, Western Union","Type":"Dental Handpiece","Instrument classification":"Class II","Frequency":"34Khz","Material":"Stainless steel,pzt ceramic,wires,plastic","Color":"Silver","Application":"Dental Areal"}}