Can this unit be left on continuously and once it detect amonia an alarm will sound?

It can, but really would rely on a battery powered unit for any kind of life safety application. There are hardwired units with alarms that would probably be a wiser choice. That’s my 2 cents

Can i use for aquarium?

No, only for gas or air environments.

Can you use in fish tank, pond

No, its for measuring ammonia in the air, like you might find in a poultry farm. I think there are test strips or kits available for measuring ammonia en water.

Is the pump and probe sold separately required for measurement?

No, the meter will respond to ammonia en the air surrounding it. However, if you want to check the concentration in a confined space before entering, the pump and probe would be necessary.

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Ammonia Gas Detector | UK Calibration Certificate | USB Recharge | Sound, Light and Vibration Alarms | 0-100ppm NH3 |

Ammonia Gas Detector | UK Calibration Certificate | USB Recharge | Sound, Light and Vibration Alarms | 0-100ppm NH3 |

Product ID: 75846604

Details

Alarm
LED Buzzer &
Brand
FORENSICS FD
Colour
Yellow
Item weight
130 Grams
Operating humidity
<95%RH
Power source
Battery

🔋48+ hours USB rechargeable battery

🚨Tri-mode alarms: sound, light & vibration

⚛️Electrochemical NANO-GAS sensor

QAR 2027

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Description

🚨 Stay Ahead of Danger with Precision & Power!

BUILT TO BRAVE THE ELEMENTS - Water-resistant, dustproof, and explosion-proof design means rugged durability on the job.
CERTIFIED ACCURACY YOU CAN TRUST - Factory calibrated with a UK calibration certificate and NIST traceability for professional-grade reliability.
LONG LASTING POWER MINIMAL DOWNTIME - USB rechargeable 1500mAh battery delivers over 48 hours of continuous monitoring—stay protected longer.
PRECISION DETECTION AT YOUR FINGERTIPS - 0-100 ppm NH3 range with ultra-fine 0.1 ppm resolution ensures no toxic gas goes unnoticed.
MULTI SENSORY ALERTS FOR INSTANT RESPONSE - Adjustable audio, visual, and vibration alarms keep you instantly informed in any environment.

The FORENSICS DETECTORS FD-90A-NH3 is a professional-grade ammonia gas detector featuring an advanced electrochemical nano-gas sensor with 0-100 ppm detection range and 0.1 ppm resolution. Factory calibrated with a UK certificate and NIST traceability, it offers reliable, real-time alerts via sound, light, and vibration. Designed for harsh environments, it’s water-resistant, dustproof, and explosion-proof, powered by a USB rechargeable 1500mAh battery providing over 48 hours of continuous use—ideal for occupational safety in farms, chemical plants, and industrial settings.

Specifications

Alarm	LED, Buzzer & Vibration
Asin	B07BD4M5KZ
Battery Average Life	10 Hours
Best Sellers Rank	1,148,793 in DIY & Tools (See Top 100 in DIY & Tools) 530 in Gas Detectors
Brand	FORENSICS DETECTORS FD
Colour	Yellow
Country Of Origin	China
Customer Reviews	2.7 2.7 out of 5 stars (4) 2.7 out of 5 stars
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-NH3
Number Of Items	1
Operating Humidity	<95%RH
Part Number	FD-90A-NH3
Power Source	Battery Powered
Product Style	Modern
Sensor Type	Electrochemical
Unit Count	1.0 count
Upper Temperature Rating	50 Degrees Celsius

Reviews

User

Wouldn't depend on this for life safety

Thought it worked okay during the first flock we had it. Still maybe does ok the first poultry barn we wear it in, but after that it gets lower and further off from right in every barn after. And it always goes back to zero good when we go between the 6 barns.For a meter to do a good job consistently, it has to have a pump so it gets the same airflow all the time. Even when this one seems like it is working, it reads higher when walking then standing still.

3.03.2026

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QAR 2027

Duties & taxes included

In stock

Sold byAmazon QATARDelivered 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 QATAR.

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TrustScore 4.5 | 7,300+ reviews

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