Target: Liquid
Model: ZW-NH101
Detection range: 0~1000 mg/L
Detection principle: Electrochemical type ammonia nitrogen water quality detection sensor
Characteristics: Fast response, high sensitivity, low power consumption, linear output, Analog signal output
Resolution and accuracy: Resolution 1 mg/L
Sensitivity 0.1mV/mg/L
Response time: ≤30 s
Notes: No temperature compensation No display two-point calibration

ZW-NH101 Manual download
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The ZW-NH101 ammonia nitrogen water quality detection module is a general-purpose module, which uses the electrochemical principle to detect the ammonia nitrogen concentration in the solution to be tested. It has good selectivity and stability.Using digital signal output, it is easy to use.
ZW-NH101 is a universal module designed and manufactured with mature electrochemical detection technology and sophisticated circuit design.


It is widely used in the detection of ammonia nitrogen content in the fields of laboratory scientific research, farmland irrigation, domestic sewage and industrial wastewater.


Low power consumption, wide linear range, excellent repeatability and stability.


Operating Voltage 12V(DC) Current <5mA
Power consumption <25mW Detection range 0~1000 mg/L
Detection Temperature range 10~50 ℃   Resolution 0.1 mg/L
Output RS485(5V TTL) Dimension 66×25×21.22mm
Response time ≤30S linearity linear
Temperature range 10~50 ℃ Life span 3 years

* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.

Technical Support:

Customized technical design and function, LOGO and package are available without extra charge (including molding fee) for mass volume.

The sensors don't have sleeping mode. It can be set in program if needed.

All Winsen products go through strict inspections and tests to make sure they are 100% qualified before shipping out.

The sensor has been fully tested (not calibrated) before leaving the factory. However, after transportation and storage, the environment conditions change, and the surface of the sensor absorbs moisture, mixed gas, pollution matters, etc. It is recommended that customers perform aging and calibration after sensors become stable according to the program and use occasions of the whole device.

15﹪-90﹪RH without condensation,greater or less than this range or long-term high temperature and high humidity will affect the life of the sensor.

Our sensors are certified with CE, 3C, ROHS, anti-explosion, fire prevention, and coal mining safety according to different applications. And we provide assistance for new certification.

Many factors can cause the sensor to fail such as broken wires in transportation, poisoning, falling off of the sensitive material, damage to the heating wire (device), etc. Please find specific cause in each category with Winsen’s aftersales.

Winsen provides professional consultation and service before and after sales. We will recommend the best fitting sensor for your demand. If you have any problem, don’t hesitate to email us to

Due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. But we will reply to your inquiry in 24 business hours.