Check the listing for details. muni multi gas detector Model M420. Condition: New. Listed at 350.00 USD. The mPower Electronics MUNI MP420 is a Compact and lightweight Diffusion 4-gas detector for worker safety at hazardous locations, with four standard sensors for oxygen Lead Free (O2-LF), combustibles (pellistor LEL), carbon monoxide (CO) and hydrogen sulfide (H2S). The detector is packaged in a robust housing with no moving parts. Its battery power offers 24 hrs for a standard 4-gas detector. The simple, 2-button operation results in ultimate ease of use and significantly reduced time spent training the user. To save user cost, sensors are not interchangeable and must be specified at time of purchase. Applications: Industrial hygiene, Oil and gas, Fire ground “Toxic Twins” detection, Environmental, Chemical, Pharmaceutical, Telecommunications Key Features: Compact, robust, lightweight & wearable Auto backlit LCD with large numeric digits Easy-to-navigate menu with two buttons Battery operation 24 hours with pellistor LEL sensor Tri-color status indicators on regular self-diagnosis of sensor, battery and circuit Wide angle LED alarms 1000 Events log Combination charge adapter / micro-USB PC interface cable IP-68 weather ingress rating Optional BLE wireless connectivity Optional MuniDock for convenient bump & calibration Up to 4 factory-configured sensors (LEL/O2-LF/CO/H2S) selected from 8 sensor options (please call Customer Service at 800-829-9580 for other options) Sensors replaceable but not interchangeable (to save user cost). Warranty: 2 Years including sensors Unit Includes: MP420 detector including rechargeable Li+ battery, LEL/O2-LF/CO/H2S sensors and alligator clip AC Charging adapter Calibration cap USB Communication cable Quick start guide Calibration certificate Gas Type %LEL, O2, H2S, CO Product Weight (lbs.) 0.5 Height (in.) 2.36 Length (in.) 1.1 Width (in.) 4.33