What is the lowest carbon monoxide ppm it could detect and how quickly?

Do not know but display indicates 1 to 1000

Do i need to purchase additional probes or attachments in order to use for my gas fireplace and hot water tank?

Usually you want to know the CO concentration where you are located, not within a gas fireplace or hot water tank, therefore you do not need additional probes or attachments.

so where do you buy the pump and probe?

Here is the link for both the pump: https://www.amazon.com/dp/B07GKJDCKQ/ref=cm_sw_em_r_mt_dp_U_yaWFCbNERFY4M

So is the lifespan of the sensor dependent on how much exposure it gets over time or just time alone ?

Just time alone. 2-3 years. Does matter how much you use it. Just like milk, only time not usage.

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Carbon Monoxide Portable Detector | UK Calibration Certificate | USB Recharge | Sound, Light and Vibration Alarms | 0-1000 ppm CO

Product ID: 74922045

Details

Alarm
LED Buzzer &
Brand
FORENSICS FD
Colour
Yellow
Item weight
130 Grams
Material
ABS
Operating humidity
<95%RH

🎯0-1000 ppm range, 1 ppm precision

🔋USB rechargeable battery, long-lasting

🛡️Water, dust & explosion resistant

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157101CFA

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Description

🚨 Stay ahead of danger with precision, power, and peace of mind!

RUGGED READY 💪 - Built tough with water-resistant, dustproof, and explosion-proof ABS casing for peace of mind anywhere.
EFFORTLESS POWER 🔋 - Convenient USB recharge means no more battery swaps—stay protected with minimal downtime.
PRECISION DETECTION 🎯 - Ultra-sensitive electrochemical sensor with 1 ppm resolution ensures you never miss a dangerous CO spike.
TRIPLE ALERT SYSTEM 🔔 - Customizable sound, light, and vibration alarms keep you instantly informed in any environment.
CERTIFIED SAFETY ASSURANCE 📜 - Comes with UK & USA calibration certificates and a 1-year warranty for trusted reliability.

The Carbon Monoxide Portable Detector by Forensics Detectors FD-90A-CO offers professional-grade 0-1000 ppm CO detection with 1 ppm resolution via an advanced electrochemical sensor. It features customizable audio, visual, and vibration alarms, is USB rechargeable, and built with water, dust, and explosion resistance. Calibrated and certified for UK & USA standards, it includes a 1-year warranty, making it a reliable, portable safety essential for home or work.

Specifications

ASIN	B07CMG69XQ
Alarm	LED, Buzzer & Vibration
Best Sellers Rank	420,654 in DIY & Tools ( See Top 100 in DIY & Tools ) 270 in Carbon Monoxide Detectors 4,749 in Scanners & Testers
Brand	FORENSICS DETECTORS FD
Colour	Yellow
Country of Origin	China
Customer Reviews	4.2 4.2 out of 5 stars (214)
Included Components	Gas Detector, USB Recharge Cable, Sling, User Manual, Calibration Cap and Calibration Certificate
Item Dimensions D x W x H	4.3D x 5.8W x 11H centimetres
Item Weight	130 Grams
Manufacturer	Forensics Detectors
Manufacturer Warranty Description	1 year manufacturer.
Material	ABS
Model Number	FD-90A-CO
Operating Humidity	<95%RH
Power source	Battery Powered
Product Style	Modern
Sensor Type	Electrochemical
Unit Count	1.0 Count

Reviews

N**.

Wirklich leicht zu bedienen, Akku hällt wirklich eine Ewigkeit, Alarm ist trotz BoseA20 deutlich hörbar und die Schwellensicht auch individuell einzurichten wenn dies wer benötigt. Echt den Preis wert

16.08.2022

G**L

E' possibile e facile fissare il livello di allarme per la presenza di monossido di carbonio CO al livello desiderato, e fatte tutte le verifiche del caso, l'allarme funziona molto bene. Batteria ricaricabile, che dura alcuni giorni e si ricarica in poche ore. Sono molto soddisfatto del'acquisto, anche se l'oggetto e' un po' caro. Arrivato puntualissimo dagli USA, senza alcuna spesa addizionale

3.02.2020

A**L

As an HVAC technician, I always check my customer's equipment to ensure they are not in danger of CO poisoning. I use a Forensics Detectors Professional Combustion Analyzer as well as this handy tool to check room air for any possibility of CO production or leakage from combustion appliances. I find this model very handy, and keep it turned on and clipped to my service bag while I'm working in the customers home. I'm glad I discovered Forensics Detectors, their products are great quality, easy to use, and are cost effective.

15.01.2026

C**R

Works as intended. I will update the review after I’ve owned it for a while.

14.03.2026

S**N

Ein sehr guter und zuverlässiger CO warner. Benutze ihn seit Jahren bei der Arbeit, die Messergebnisse sind immer 100% richtig. Kann ich nur empfehlen 👍

5.03.2025

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157101CFA

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In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

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