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FORENSICS DETECTORS FD FD-4A
USA NIST Calibrated 4 Gas Monitor by Forensics | O2, CO, H2S, LEL | USB Recharge |
In Stock
- Price
- $215.45
Prices from Amazon as of . Product prices and availability are accurate as of the date and time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of the product. As an Amazon Associate I earn from qualifying purchases.
Ranking within Category
Comparing this product to others on Nomad Gear Finder (in the carbon monoxide detectors category with a value specified):
- This product's Weight is higher than 74% of 31 others: 0.51 lbs (0.23 kg)
- This product's Length is higher than 83% of 30 others: 5.12 in. (130 mm)
- This product's Depth/Height is lower than 90% of 31 others: 1.18 in. (30 mm)
Specifications
These details are subject to change and may not be current. Please check Amazon or manufacturer web site to confirm before purchase.
Detection capabilities
- Min. CO detection
- 0 ppm
- Max. CO detection
- 1,000 ppm
- Resolution
- 1 ppm
- Gases detected
- CO, H2S, O2 and LEL (combustible gas)
- Response time (T90)
- 30 s
- Accuracy
- ±5% F.S.
- Sensor type
- Electrochemical
- Sensor life
- 2.0 years
- Built-in pump
- No
Alarms
- Adjustable alarm levels
- Yes
Charging
- Battery runtime
- 20 hours
- Battery capacity
- 2,000 mAh
- Charging port
- Micro-USB
Core specs
- Battery chemistry
- Lithium-ion
Physical Attributes
- Weight
- 0.51 lbs
- Weight
- 0.23 kg
- Length
- 5.12 in.
- Length
- 130 mm
- Width
- 2.64 in.
- Width
- 67 mm
- Depth/Height
- 1.18 in.
- Depth/Height
- 30 mm
Operating Temp Range
- Operating temp min
- 0 ℉
- Operating temp max
- 122 ℉
- Operating temp min
- -18 ℃
- Operating temp max
- 50 ℃
Certifications
- NIST traceable calibration
- Yes
- ATEX / IECEx certified
- Yes
- Certifications summary
- ATEX
More specifications
- Warranty
- 1 Year
Features
Details from the FORENSICS DETECTORS FD FD-4A Amazon listing:
- ⚛️ SENSOR: High quality electrochemical sensors. USA NIST traceable calibration. Oxygen (O2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S) and Combustibles (LEL). Turn ON and GO.
- 🌇 DETECT: Detection error better than ≤±5% F.S. and response time: < 30 sec. Zero and span calibration options.
- 🎆 ALARMS: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. Alarm digital time stamp.
- 💪 STRONG: Robust design made of high strength ABS and Anti-slip grip rubber. Waterproof, dust-proof and explosion-proof.
- 🕵️ TRUST: ** 1 year limited warranty ** Arrives with calibration and QA certificate ** 100% product test and verification in the USA ** 100% quality guaranteed **
Similar products from other brands
Chosen for their similar specs and price:
 This productFORENSICS DETECTORS FD FD-4A |
 TOPTES FD-90A-CO |
 BW Technologies GasAlertMicroClip XL |
 Sensorcon AV8-CO-03 |
|
|---|---|---|---|---|
| Price | $215.45 | $79.99 | $609.00 | $194.00 |
| Model | FD-4A | FD-90A-CO | GasAlertMicroClip XL | AV8-CO-03 |
| Min. CO detection (ppm) | 0 | 0 | 0 | 0 |
| Max. CO detection (ppm) | 1,000 | 1,000 | 500 | 500 |
| Resolution (ppm) | 1 | 1 | 1 | 1 |
| Gases detected | CO, H2S, O2 and LEL (combustible gas) | CO | CO, H2S, O2 and LEL (combustible gas) | CO |
| Response time (T90) (s) | 30 | 30 | – | 20 |
| Accuracy | ±5% F.S. | ±5% F.S. | CO ±10% | CO ±10% |
| Sensor type | Electrochemical | Electrochemical | – | Electrochemical |
| Sensor life (years) | 2.0 | 2.0 | 5.0 | – |
| Built-in pump | No | No | No | – |
| Low alarm level (ppm) | – | 50 | 35 | 35 |
| High alarm level (ppm) | – | 200 | 200 | 200 |
| Alarm loudness (dB) | – | – | 95 | – |
| Adjustable alarm levels | Yes | Yes | Yes | Yes |
| TWA / STEL alarms | – | – | Yes | – |
| Charging time (hours) | – | 3.0 | 6.0 | – |
| Battery runtime (hours) | 20 | 24 | 18 | – |
| Battery capacity (mAh) | 2,000 | 1,500 | – | – |
| Charging port | Micro-USB | Micro-USB | – | – |
| Battery chemistry | Lithium-ion | Lithium-ion | Lithium-ion polymer | – |
| Weight (lbs) | 0.51 | 0.31 | 0.42 | 0.25 |
| Weight (kg) | 0.23 | 0.14 | 0.19 | 0.11 |
| Length (in.) | 5.12 | 4.30 | 4.40 | 3.20 |
| Length (mm) | 130 | 109 | 113 | 81 |
| Width (in.) | 2.64 | 2.30 | 2.40 | 2.20 |
| Width (mm) | 67 | 58 | 60 | 56 |
| Depth/Height (in.) | 1.18 | 1.70 | 1.20 | 0.86 |
| Depth/Height (mm) | 30 | 43 | 32 | 22 |
| IP rating | – | – | IP68 | – |
| Operating temp min (℉) | 0 | 0 | -4 | -4 |
| Operating temp max (℉) | 122 | 122 | 122 | 122 |
| Operating temp min (℃) | -18 | -18 | -20 | -20 |
| Operating temp max (℃) | 50 | 50 | 50 | 50 |
| NIST traceable calibration | Yes | Yes | – | – |
| ATEX / IECEx certified | Yes | Yes | Yes | – |
| Class I Div. 1 (UL/CSA) | – | – | Yes | – |
| Certifications summary | ATEX | ATEX | CSA Class I Div. 1 Groups A-D, ATEX, IECEx, CE, KTL, INMETRO, FCC Part 15 Class B statement | CE |
| Warranty | 1 Year | 1 Year | 2 Years | 2 Years |
Data sources
Data for this product compiled from these sources:
Specifications last updated Oct 8, 2026.