
Relatively inaccurate if you want decent ppm readings. This is more useful for simply detecting the presence of NH3 than for getting accurate readings. Another disadvantage is the very long warm-up time of several hours. That being said, if you just want to build an NH3 detector, this will work. Keep in mind that a good NH3 sensor costs over $400.

π° Govee Water Detectors, Adjustable 100dB Audio Alarm Sensor, Highly Sensitive Leak and Drip Alert, Ideal for Kitchen Bathroom Basement (Battery Included)
9 Review

π° Ensure Your Family's Safety: DIY Lead in Drinking Water Test Kit for City or Well Water - Quick 10 Minute Test - Single Pack
9 Review

Xiaomi Mi Smart Sensor Set
45 Review

Wireless Aqara Water Leak Sensor white CN
12 Review

π§οΈ Premium Quality Disposable Rain Ponchos for Adults / Kids (6 Pack) - 50% Thicker Emergency Ponchos for Ultimate Waterproof Protection
8 Review

π½οΈ S.O.S. Rations Emergency 3600 Calorie Food Bar (Cinnamon & Coconut, 2 Pack)
8 Review

Clear Disposable Emergency Rain Poncho with Hood for Adults - 20 Pack
8 Review

Be Prepared For Anything With Quakehold! 70500 Evacuation Essentials Kit
9 Review