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

🔋USB rechargeable with 10h battery life

🚨Multi-mode alarms: sound, light & vibration

⚛️Electrochemical NANO-GAS sensor

$757.60

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Description

🚨 Stay Ahead of Danger with Precision & Power!

TRIPLE ALERT SYSTEM - Customizable audio, visual, and vibration alarms ensure you never miss a critical gas leak.
CERTIFIED CONFIDENCE - Comes with a UK calibration certificate signed and verified in Europe—trust your readings every time.
PLUG PLAY PROTECT - USB rechargeable with 10-hour battery life—stay powered and ready wherever your work takes you.
BUILT TO BRAVE THE ELEMENTS - Water-resistant, dustproof, and explosion-proof design built for the toughest environments.
PRECISION DETECTION ZERO COMPROMISE - Detects ammonia from 0 to 100 ppm with ultra-fine 0.1 ppm resolution for unmatched safety.

The Ammonia Gas Detector FD-90A-NH3 features a cutting-edge electrochemical nano-gas sensor calibrated to detect ammonia levels from 0 to 100 ppm with 0.1 ppm resolution. It offers multi-mode alarms (sound, light, vibration) for immediate alerts, is water-resistant, dustproof, explosion-proof, and USB rechargeable with a 10-hour battery life. Certified with a UK calibration certificate and backed by a 1-year warranty, it’s engineered for professional-grade safety and reliability.

Specifications

ASIN	B07BD4M5KZ
Alarm	LED, Buzzer & Vibration
Battery Average Life	10 Hours
Best Sellers Rank	1,155,015 in DIY & Tools ( See Top 100 in DIY & Tools ) 531 in Gas Detectors
Brand	FORENSICS DETECTORS FD
Colour	Yellow
Country of Origin	China
Customer Reviews	2.7 2.7 out of 5 stars (4)
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

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$757.60

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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