Single Gas Detectors
The UNI MP100 offers simple, personal protection for a wide array of toxic gas and Oxygen (O2) measurement applications. In addition to common sensors such as Carbon Monoxide (CO), Hydrogen Sulfide (H2S), Nitrogen Dioxide (NO2), Ammonia (NH3) and Sulfur Dioxide (SO2), we offer less-common sensors including Chlorine (Cl2), Chlorine Dioxide (ClO2), Phosgene (COCl2), Hydrogen Chloride (HCl), Hydrogen Fluoride (HF), Arsine (AsH3), Phosphine (PH3), Ozone (O3), Methyl Mercaptan (CH4S) and Ethylene Oxide (ETO).

List of Benefits

  • 50% larger (AA versus 2/3 AA) Lithium Battery
  • Widest choice of sensors on the market
  • Large display
  • 50 Event datalogging
  • Low cost of ownership
  • Smart sensors*
  • Solid stainless-steel alligator clip
  • Durable housing
  • Fast bump, calibration or download using single Docking Box or CaliCase 4-Bay Docking Station
  • UL Classification Class I, II, III, Groups ABCDEFG


Special oxygen monitors are available with long-life lead-free sensors or with inverted alarms for inert gas applications.

The monitors have a large LCD providing maximum readability in the field and are made with six bright red LEDs allowing for quick alarm notification. Constructed of strong and durable material, the UNI is designed to be comfortable, yet drop-resistant.

The UNI series can easily be bump tested and calibrated with the mPower CaliCase Station or Docking Box.

SpecificationDetail Description
Size88 x 62 x 33 mm
Weight125 g
Response time (t90)15 seconds (CO/H2S/O2). Others vary, see individual sensor specifications in TA Note 4
Battery Replaceable AA size Lithium battery, 3 years typical operation
Temperature-4°F to 122°F (-20°C to 50°C)
Humidity5 to 95% relative humidity (non-condensing)
Alarm typeHigh, Low, STEL & TWA alarms adjustable : Over range alarm : Low battery alarm
Alarm signal95 dB @ 30 cm : Bright red LEDs : Built in vibrator
Calibration2-point calibration, zero and span, power on zero (user-selectable)
Docking Stations for Cal & Bump UNI Single Docking Box, CaliCase 4-Bay Docking Station
Event logUp to 50 alarm events
IP ratingIP-67
EMI/RFI EMC directive 2014/30/EU
Safety CertificationsClass I, Div 1, Group ABCD : Class II, Div 1, Group EFG : Class III, Div 1 T4, -20°C ≤ Tamb ≤ +50°C, IECEx Ex ia IIC T4 Ga, ATEX II 1G Ex ia IIC T4 Ga
Sensor LifeCO & H2S expected operating life 5 years or longer, others 1 to 2 years as per warranty
Warranty2 years on O2, CO, H2S, SO2, HCN, NO, NO2, and PH3 units including sensor; 1 year on others

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