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Orange rectangular gas monitor with belt clip and display

BFKK

BFKK Guard-101 4-Gas Monitor Orange

SKU CH-E4DV-8SDDE

Detects H₂S, CO, LEL and O₂ with vibration, visual and audible alarms, 14-hour battery life and explosion-proof housing

  • Detects H2S, CO, LEL and O2 rapidly
  • Triple alarm: LED, vibration and sound within .5 seconds
  • Up to 14 hours battery life for long shifts
  • Explosion-proof ABS housing, waterproof and dustproof
  • Password protection prevents accidental operation, default 69

4-Gas Monitor for H2S, CO, LEL, O2

The BFKK Guard-101 detects hydrogen sulphide, carbon monoxide, combustible gases and oxygen simultaneously. It is intended for workers and homeowners who need continuous air-quality awareness in confined or hazardous areas. The unit provides real-time concentration readings so users can react before conditions become dangerous.

Clip-On Mounting, Password Lock, .5-Second Response

A rear clip secures the monitor to a belt or harness for hands-free carry. An initial password of 69 prevents accidental setting changes during transport or use. Alarms trigger within .5 seconds via LED, vibration and sound, continuing until gas levels return to safe limits.

Suits Personal Safety Checks.

The portable design and 14-hour battery suit mobile personnel performing spot checks or shift-long monitoring. Buyers needing permanent wall-mounted systems, data logging via wireless networks or multi-point area coverage should look at dedicated fixed-installation equipment.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $134.99
Pricier than about 70% of the 3,030 comparable items (median $54.99).

Specifications

No published specifications for this item yet.

Questions about this item

How can I verify the Guard-101 is detecting H2S, CO, LEL and O2 correctly after I turn it on?

The monitor responds within 0.5 seconds and activates LED light, vibration and sound alarms simultaneously until gas concentrations return to normal, confirming active detection.

What accessories come with the Guard-101 and what must I purchase separately?

The unit includes a back clip for immediate wearable use; calibration gas, replacement sensors and charging accessories are not included and must be sourced separately.

Which version of the Guard-101 should I choose for a 14-hour shift?

The Guard-101 model provides up to 14 hours of battery life, matching a full shift without needing a recharge.

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