F999H Underground Water Leak Detector Precision Water Pipe Leak Detector Sensor Tap 
Product Name: F999H Leak Tester
Current: 60mA Magnification factor: 0-100db 
adjustable Voltage: 9V Operating temperature: -10 ° C to+50 ° C 
Working hours: {>} 30 hours 
Instrument box size: 45 * 30 * 15MM 
Frequency range: 1-4 levels 200HZ-3000HZ 
continuously adjustable
 Weight: Host 900g/indoor sensor (large) 140g/indoor sensor (small) 75g/handle 160g