MEASUREMENT RANGE: 0 to 100ppm0; 0.01VOL%; 1 to 152 mg/M³; 0 to 0.23LEL% with 500ppm maximum overload 

FEATURES: Automatic Power OFF(Can be Disabled); Switchable hydrogen sulfide units (%VOL; %LEL; PPM; mg/M³); battery power indicator; buzzer alarm on/off; high/low alarm threshold adjustable 

KEEP YOUR SAFE: Hydrogen Sulfide Detector Monitor helps to detect the presence of harmful gases in the air; making sure you and your loved ones are always safe 

DESIGN: Handheld compact and portable with Electrochemical H₂S sensor and it has calibration function 

With our hydrogen sulfide detector monitor; you can have peace of mind knowing that you and your family are breathing clean and safe air; free from harmful gases