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The KC-321C ambient humidity meter is equipped with an advanced technology sensor to measure ambient parameters of the installations. It measures the ambient temperature and humidity, wet bulb temperature and dew point and, in addition, it can change the units of measurement.

The device adopts a low consumption design with LCD display and data retention. This handy device is portable, easy and safe to use and with a fast response.

The external temperature sensor is used to measure the surface of the object and also the internal temperature. These readings can be used to calculate the condensation point of the surface.

This appliance has a range of applications: storage and transportation of food, antique preservation, file management, construction equipment, agriculture, building inspection, plumbing repair, heating, ventilation And air conditioning.

medidor humedad ambiental





Gral. Pack.


Unit Pack.


Technical sheet

Technical information: THERMO – HYGROMETER

A- Temperature and humidity sensor.
B- LCD screen.
C- Power button.
D- Data hold button.
E- Ambient temperature change / Dew point button.
F- Battery compartment.
G- MAX / MIN button.
H- Wet bulb temperature and temperature probe.
I- Change of temperature unit.
J- External temperature probe.

Product name:
Measuring range ambient temperature T1:
Temperature range of external probe T2:
Humidity Rangee:
Ambient temperature accuracy T1:
Accuracy of external probe T2:
Moisture Accuracy:
Temperature Sensitivity:
Moisture sensitivity:
Default temperature unit:
Response time:
Auto Off LCD:
Auto off:
Power supply:
Intensity of work:
Operating temperature:
Operating Humidity:
Storage conditions:

Thermo – hygrometer
-10 ° C ~ 50 ° C
-10 ° C ~ 70 ° C
0 ~ 99%
± 1 ° C
± 1.5 ° C
5% ~ 95% ± 3 ° C (25 ° C)
20 minutes (with auto off mode off)
External temperature probe
A 9V battery (6F22 / 6LR61)
0 ° C ~ 40 ° C
5% ~ 95% RH (non-condensing)
-30 ° C ~ 60 ° C, <85% RH (without battery)
192mm x 61mm x 31mm

– Do not drop the product or use it forcibly.
– Do not disassemble the product to avoid breakdowns.
– Insert the protective cap when not in use.
– Do not place the product with corrosive gas.
– Keep the device clean.
– Avoid dust and water.
– Do not immerse the product in water as it will be damaged.
– Please remove the battery if you will not use it for a while.

The product is warranted to be free from defects in material, workmanship for a period of one year from the date of purchase.

Notice: The guarantee does not apply under the following conditions:

1 – Unauthorized disassembly may invalidate the warranty.
2 – We are not responsible for any damages resulting from abrasion, water, falls or disassembly.

Tips: Many parts of the product can be recycled, please go to your local regulator for recycling instead of throwing it away.