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4-Gas Responder- Multi Gas Detector
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4-Gas Responder- Multi Gas Detector

Order Number: 4-Gas Responder
Confined Space entry monitor (BW Micro 5) used for  gas detection when entering confined spaces.

  • Included are 4 sensors for monitoring CO, H2S, O2, & LEL.
  • Water-resistant design in an integral concussion-proof enclosure
  • Large LCD allows for easy-to-read monitoring
  • Integral motorized pump for remote sampling and fast response
  • AA battery powered for easy replacement, or hot-swappable rechargeable pack
  • 95 dB alarm tone, bright LED alarm bars, & internal vibrating alarm for noisy areas
  • Auto backlight: activates in low light & when in alarm
  • Four alarm levels: instantaneous Low Alarm, High Alarm, TWA and STEL
  • Records TWA, STEL, and max exposures to gas & displays readings on command
  • Datalogger with programmable sampling intervals
  • Full function self-test confirms sensor, battery and circuit integrity, and audible/visual alarms upon activation


5.7 x 2.9 x 1.5 in. / 14.5 x 7.4 x 3.8 cm


13.1 oz. / 370 g


- Visual, vibrating, audible (95dB)
- Low, High, STEL, TWA, OL (over limit)


Sensor integrity, circuitry, battery and audible/visual alarms on activation, battery (continuous)


Integral motorized pump for remote sampling and fast response

User options

Confidence beep, Set STEL interval, set TWA method, Sensor on/off, Latching alarms, Safe display mode, Stealth mode, Set datalogger rate, Passcode protection, Set Datalogger Rate, Fast Pump, Automatic backlight, User-settable calibration gas level, Calibration due lockout, Language choices (5), Adjust clock

Detection Range
O2 sensor: 0-30% vol (0.1% increments)
CO sensor: 0-500ppm (1ppm increments)
H2S sensor: 0-500ppm (1ppm increments)
Combustible (LEL): 0-100% LEL (1% increments) or 0-5% v/v methane (0.1% increments)
Warranty 1 year including sensors
Please review these other products:

4-GAS Responder replacement sensors

Order Number:
Replacement sensors for the 4-GAS Responder (choose from list)