Model	VML-1
Suitable for refrigerant	CFC, HCFC, HFC refrigerant
Minimum of leakage	≤3g/year (R134A)
Response time	≤3s (regarding the size and distance of source of leaks)
Life time of battery	≤8 hours
Pressure of system under test	≤3.4 bar
Life time of sensor	≥1 yearunder normal usage
Power	5 V
Calibration	auto
Weight	350 g
Length of probe	40 cm

Model	VML-2
Suitable for refrigerant	HFC, HCFC, CFC and HFO refrigerant
Minimum of leakage	≤2g/year (R-134A)
Response time	≤3s (regarding the size and distance of source of leaks)
Sensor life	≤300 hours
Numerical display	7 segment digital display(1to9)
Life time of sensor	≥1 yearunder normal usage
Power	4x1.5V AA alkaline battery
Battery Life	4-6 hours continuous
Calibration	auto
Weight	380 g
Length of probe	43 cm