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MUNI MP420 Gas Detector


Compact MUNI MP420 Gas Detector

The MUNI MP420 Gas Detector is a portable 4-gas detector designed for ensuring safety in hazardous environments. Compact and lightweight, it comes equipped with four standard sensors to monitor oxygen (O2), combustible gases (LEL), carbon monoxide (CO), and hydrogen sulfide (H2S). Optional sensors (specified at time of purchase, not interchangeable) are available for low power infrared methane (CH4), sulfur dioxide (SO2), and hydrogen cyanide (HCN).

The MP420 is housed in a durable casing without moving parts, engineered to withstand tough conditions. The device features a long-lasting battery that provides up to two work shifts of operation on a single charge for standard 4-gas detection, and even longer when using the low-power infrared sensor. Operation is simplified with just two buttons, making it extremely easy to use.

What’s Included:

  • MP420 detector with rechargeable Li+ battery, selected sensors, and alligator clip
  • AC charging adapter
  • Calibration cap
  • USB communication cable
  • Quick start guide


Key Features of the The MUNI MP420 Gas Detector:

  • Compact, robust, and wearable design
  • Auto-backlit LCD for clear visibility
  • Simple menu navigation via two buttons
  • Choose up to four sensors from seven available options, optimising functionality and cost
  • Regular self-diagnosis with tri-color status indicators for sensor, battery, and circuit integrity
  • Visible wide-angle LED alarms
  • Stores up to 1000 event logs
  • Dual-function charge adapter and micro-USB PC interface cable
  • IP-68 rating for superior weather resistance
  • Optional Bluetooth Low Energy (BLE) wireless connectivity
  • 24-hour battery life with standard pellistor LEL sensor; extended duration with the infrared LEL sensor
  • Includes calibration certificate for reliability assurance


Optional extras: External filters, BLE Wireless, MuniDock MP420T bump & calibration station – ask us for more info

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