COMET system - Advanced features - Relative humidity

For 30 years COMET system has been producing advanced measuring technology for environmental monitoring in industry, health and research, agriculture, IT datacenters and metrology.
We are an authorized distributor of the Czech producer of dataloggers, thermometers, sensors and monitoring systems COMET. We provide sales and calibration of most products of this brand. COMET system products can be purchased directly in our e-shop including calibration.

Comet U3120 temperature and humidity data logger
Immediately in stock
206,59 € excl. VAT
229,54 €
249,97 € incl. VAT
249,97 € incl. VAT
Temperature range (max) | 70 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet U3120 datalogger allows you to measure temperature, humidity and dew point and store the measured data in internal memory at a…


Low cost temperature and humidity sensor Comet P3110E, 4-20mA output
Immediately in stock
134,93 € excl. VAT
163,27 € incl. VAT
163,27 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet T3110E is a low cost room temperature and relative humidity sensor for outdoor and indoor use. The instrument is designed to…

Temperature and humidity data logger Comet U3121 - ELKA
Immediately in stock
184,31 € excl. VAT
204,79 €
223,02 € incl. VAT
223,02 € incl. VAT
Temperature range (max) | depends on the type of sensor |
---|---|
Temperature range (min) | depends on the type of sensor |
Humidity measurement range | depends on the type of sensor |
Datalogger Comet U3121 has one input for external temperature and humidity sensor with ELKA connector. The operation of the data logger is…

WiFi temperature and humidity sensor Comet W3710
Immediately in stock
340,12 € excl. VAT
411,55 € incl. VAT
411,55 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 10 to 95% |
The Comet W3710 wireless sensor is equipped with a built-in temperature and relative humidity sensor. It is particularly suitable for…


Thermometer, hygrometer Comet P8611 PoE with Ethernet output
Immediately in stock
165,27 € excl. VAT
199,98 € incl. VAT
199,98 € incl. VAT
Temperature range (max) | 105 °C |
---|---|
Temperature range (min) | -55 °C |
Humidity measurement range | Podle zvolené sondy |
The Comet P8611 is an Ethernet sensor with one cinch connector for connecting a temperature or temperature and humidity probe (only for 2…


Comet U3120 IoT temperature and humidity datalogger
In stock
from
510,98 € excl. VAT
from 618,29 € incl. VAT
from 618,29 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 0 to100% |
The Comet U3120M and U3120G data loggers are IoT wireless data loggers with built-in GSM modem. After purchasing a SIM card, immediate…


Wireless thermometer with hygrometer Comet W3810 Sigfox IoT
Immediately in stock
191,62 € excl. VAT
231,86 € incl. VAT
231,86 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet W3810 Wireless Thermometer and Hygrometer works using the Sigfox radio network to transmit temperature and humidity measurements…


Datalogger Comet U3430 with built-in temperature, humidity and CO2 sensors
In stock
374,85 € excl. VAT
453,57 € incl. VAT
453,57 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 0 to 5000 ppm |
The datalogger is designed to record temperature, humidity and CO2. When the set limits are exceeded, alarms are indicated by LED, LCD and…

WiFi temperature and humidity sensor Comet W3711
Immediately in stock
263,07 € excl. VAT
318,31 € incl. VAT
318,31 € incl. VAT
Temperature range (max) | depends on the type of sensor |
---|---|
Temperature range (min) | depends on the type of sensor |
Humidity measurement range | depends on the type of sensor |
The Comet W3711 wireless WiFi sensor can be used wherever there is a WiFi signal. This makes it ideal for use in buildings, warehouses,…


Datalogger Comet U4440 for measuring temperature, humidity, CO2 and atmospheric pressure
In stock
445,91 € excl. VAT
539,55 € incl. VAT
539,55 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 0 to 5000 ppm |
The datalogger is designed to record temperature, humidity, atmospheric pressure and CO2. When the set limits are exceeded, alarms are…


Thermometer with hygrometer Comet T3610 PoE with Ethernet output
Immediately in stock
333,33 € excl. VAT
403,33 € incl. VAT
403,33 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 0 to100% |
The Comet T3610 thermometer with hygrometer can measure not only temperature and humidity but also dew point and calculated quantities such…


Digital thermometer, hygrometer with recording Comet D3120
Immediately in stock
258,68 € excl. VAT
313 € incl. VAT
313 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
The Comet D3120 thermometer is designed for measuring and recording room temperature and relative humidity with the possibility of direct…

Datalogger Comet U3631 temperature, humidity and with connector for external temperature probe
Immediately in stock
271,06 € excl. VAT
327,98 € incl. VAT
327,98 € incl. VAT
Temperature range (max) | 70 °C |
---|---|
Temperature range (min) | -30 °C |
Ext. temperature range sensors (max) | 260 °C, závisí na typu sondy |
Ext. temperature range sensors (min) | -90 °C, závisí na typu sondy |
Humidity measurement range | 0 to100% |
The Comet U3631 datalogger is designed to record temperature, humidity and dew point temperature using internal sensors plus temperature…

Comet T3110 temperature and humidity sensor with 4-20mA output
Immediately in stock
216,77 € excl. VAT
262,29 € incl. VAT
262,29 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
Comet T3110 is a room temperature and relative humidity sensor with 4-20mA current output. It can further convert the measured temperature…


Thermometer, hygrometer Comet P8541 with Ethernet output
Immediately in stock
156,89 € excl. VAT
189,84 € incl. VAT
189,84 € incl. VAT
Temperature range (max) | 105 °C |
---|---|
Temperature range (min) | -55 °C |
Humidity measurement range | Podle zvolené sondy |
The Comet P8541 thermometer has four channels for connecting temperature and humidity digital probes. The measured values can be easily…


Comet D3631 thermometer and hygrometer with recording
Upon request
274,25 € excl. VAT
331,84 € incl. VAT
331,84 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -10 °C |
Ext. temperature range sensors (max) | 250 °C, závisí na typu připojené sondy |
Ext. temperature range sensors (min) | -50 °C, závisí na typu připojené sondy |
Humidity measurement range | 5 to 95 % |
The Comet D3631 thermometer is designed for measuring and recording room temperature and relative humidity with the possibility of direct…


WiFi temperature and relative humidity sensor Comet W3745
Immediately in stock
360,48 € excl. VAT
436,18 € incl. VAT
436,18 € incl. VAT
Ext. temperature range sensors (max) | 400 °C, závisí na typu sondy |
---|---|
Ext. temperature range sensors (min) | -190 °C, závisí na typu sondy |
Humidity measurement range | 0 to100%, závisí na typu připojené sondy |
The Comet W3745 WiFi sensor is designed to measure temperature and relative humidity from one external combination probe with ELKA…

Comet T3117 temperature and humidity sensor with 4-20mA output
usually in stock
241,52 € excl. VAT
292,24 € incl. VAT
292,24 € incl. VAT
Temperature range (max) | 125 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet T3117 sensor is designed to measure temperature and humidity, stem length 700mm. It can further convert the measured temperature…

Comet T3411 temperature and humidity sensor with RS485 output
In stock
247,50 € excl. VAT
299,48 € incl. VAT
299,48 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet T3411 is designed to measure temperature and relative humidity using a built-in sensor. It can further convert the measured…

Comet C4141 thermometer, hygrometer and barometer with external probe on cable
Immediately in stock
from
281,44 € excl. VAT
from 340,54 € incl. VAT
from 340,54 € incl. VAT
Temperature range (max) | 105 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 5 to 100% |
The Comet C4141 is designed to measure temperature, relative humidity and atmospheric pressure (it also measures the pressure tendency over…


Thermometer, hygrometer and barometer Comet D4130
Upon request
345,31 € excl. VAT
417,83 € incl. VAT
417,83 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
The Comet D4130 is designed to measure and record temperature, relative humidity and atmospheric pressure (it also measures the pressure…

Comet U4130 temperature, humidity and pressure data logger
Upon request
301,80 € excl. VAT
365,18 € incl. VAT
365,18 € incl. VAT
Temperature range (max) | 70 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet U4130 stores temperature, relative humidity and atmospheric pressure in an internal memory that can store up to 500,000 values.…


Web Sensor Comet T3511 temperature and humidity sensor with Ethernet output
usually in stock
from
303,79 € excl. VAT
from 367,59 € incl. VAT
from 367,59 € incl. VAT
Temperature range (max) | 105 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
Web Sensor Comet T3511 with external temperature and humidity probe. It communicates via Ethernet and can further convert the measured…

Comet T3113 temperature and humidity sensor with 4-20mA output
In stock
232,73 € excl. VAT
281,60 € incl. VAT
281,60 € incl. VAT
Temperature range (max) | 125 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet T3113 sensor is designed to measure temperature and humidity in air ducts, stem length 150mm. It can further convert the measured…


Comet T3111 temperature and humidity sensor with 4-20mA output
usually in stock
from
234,33 € excl. VAT
from 283,54 € incl. VAT
from 283,54 € incl. VAT
Temperature range (max) | 105 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet T3111 sensor is designed to measure temperature and humidity using an external probe. The instrument comes standard with a T+RV…


Temperature, humidity, CO2 multilogger with barometer Comet M1323
Upon request
928,94 € excl. VAT
1 124,02 € incl. VAT
1 124,02 € incl. VAT
Temperature range (max) | 600 °C, depends on the type of sensor |
---|---|
Temperature range (min) | -200 °C, depends on the type of sensor |
Humidity measurement range | depends on the type of sensor |
CO2 measurement range | 2000 ppm |
Multilogger Comet M1323 is maximally equipped for professional use. It can measure temperature, humidity, CO2, barometric pressure, voltage…


Comet T0213D temperature and humidity sensor with 0-10V output
Upon request
228,34 € excl. VAT
276,29 € incl. VAT
276,29 € incl. VAT
Temperature range (max) | 125 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet T0213D sensor is designed to measure temperature and relative humidity in the air duct using a built-in sensor, the length of the…

Comet T0213 temperature and humidity sensor with 0-10V output
In stock
228,34 € excl. VAT
276,29 € incl. VAT
276,29 € incl. VAT
Temperature range (max) | 125 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet T0213 sensor is designed to measure temperature and relative humidity in the air duct using a built-in sensor, the length of the…


Comet H7530 temperature, humidity and pressure sensor, Ethernet output and two relays
In stock
453,89 € excl. VAT
549,21 € incl. VAT
549,21 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet H7530 sensor is designed for online monitoring of temperature, humidity and atmospheric pressure using a built-in sensor and two…

Comet T7410 temperature, humidity and pressure sensor with RS485 output
In stock
356,49 € excl. VAT
431,35 € incl. VAT
431,35 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet T7410 sensor is designed to measure temperature, relative humidity and atmospheric pressure using a built-in sensor. It can also…

Comet T3311 temperature and humidity sensor with RS232 output
In stock
174,05 € excl. VAT
210,60 € incl. VAT
210,60 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet T3311 is designed to measure temperature and relative humidity using a built-in sensor. It can further convert the measured…


Comet D4141 thermometer, hygrometer and barometer with external probe on cable
In stock
from
360,48 € excl. VAT
from 436,18 € incl. VAT
from 436,18 € incl. VAT
Temperature range (max) | 105 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
The Comet D4141 is designed to measure and record temperature, relative humidity and atmospheric pressure (it also measures the pressure…


Thermometer, hygrometer Comet C3633 with probe for surface temperature measurement
Immediately in stock
257,49 € excl. VAT
311,56 € incl. VAT
311,56 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
The Comet C3633 is a high-precision thermometer and hygrometer with acoustic and optical alarm of measured values. It is designed to…


Thermometer, hygrometer Comet D3121 with external probe on cable
Immediately in stock
from
272,26 € excl. VAT
from 329,43 € incl. VAT
from 329,43 € incl. VAT
Ext. temperature range sensors (max) | 105 °C |
---|---|
Ext. temperature range sensors (min) | -30 °C |
Humidity measurement range | 0 to100% |
Thermometer, hygrometer Comet D3121 with external probe on the cable is designed for direct measurement and recording of temperature,…


Web Sensor Comet T7610 PoE temperature, humidity and pressure sensor with Ethernet output
In stock
444,71 € excl. VAT
538,10 € incl. VAT
538,10 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 0 to100% |
Web Sensor Comet T7610 temperature, humidity and atmospheric pressure. It communicates via an Ethernet network that can be powered at the…

WiFi temperature, humidity, pressure and CO2 sensor Comet W4710
In stock
535,33 € excl. VAT
647,75 € incl. VAT
647,75 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to 95% |
CO2 measurement range | 5000 ppm |
The Comet W4710 WiFi sensor is versatile with internal sensors for measuring temperature, relative humidity, barometric pressure and CO2.…


Comet M1320 temperature and humidity multilogger
In stock
738,12 € excl. VAT
893,13 € incl. VAT
893,13 € incl. VAT
Temperature range (max) | 600 °C, depends on the type of sensor |
---|---|
Temperature range (min) | -200 °C, depends on the type of sensor |
Humidity measurement range | depends on the type of sensor |
This professional multilogger Comet M1320 allows the connection of two probes with MinDin connectors and two more probes via a terminal…


Web Sensor Comet T7510 temperature, humidity and pressure with Ethernet output
In stock
403,99 € excl. VAT
488,83 € incl. VAT
488,83 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
Web Sensor Comet T7510 with built-in temperature, relative humidity and atmospheric pressure sensors. It communicates via Ethernet and can…


Comet U4440 IoT temperature, humidity, CO2 and pressure data logger
In stock
from
728,94 € excl. VAT
from 882,02 € incl. VAT
from 882,02 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 5000 ppm, 0 to 5000 ppm |
Comet U4440M and U4440G are IoT wireless data loggers with built-in GSM modem. After purchasing a SIM card, immediate connection to the…


Datalogger Comet U3631 IoT temperature, humidity and external probe connector
In stock
from
507,78 € excl. VAT
from 614,41 € incl. VAT
from 614,41 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Ext. temperature range sensors (max) | 260 °C |
Ext. temperature range sensors (min) | -90 °C |
Humidity measurement range | 0 to100% |
The Comet U3631M and U3631G data loggers are IoT wireless data loggers with built-in GSM modem. After purchasing a SIM card, immediate…


Comet U3121 IoT temperature and humidity datalogger for external probe
In stock
from
487,43 € excl. VAT
from 589,79 € incl. VAT
from 589,79 € incl. VAT
The Comet U3121M and U3121G data loggers are IoT wireless data loggers with built-in GSM modem. After purchasing a SIM card, immediate…

Comet T7418 indoor temperature, humidity and pressure sensor with RS485 output
In stock
303,79 € excl. VAT
367,59 € incl. VAT
367,59 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
The Comet T7418 indoor sensor is designed to measure temperature, relative humidity and atmospheric pressure indoors and for building…

Comet T7318 indoor temperature, humidity and pressure sensor with RS232 output
Upon request
238,72 € excl. VAT
288,85 € incl. VAT
288,85 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
The Comet T7318 indoor sensor is designed to measure temperature, relative humidity and atmospheric pressure indoors and for building…

Indoor temperature and humidity sensor Comet T3118, 4-20mA output
In stock
173,25 € excl. VAT
209,63 € incl. VAT
209,63 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
The Comet T3118 indoor sensor is designed for measuring indoor temperature and relative humidity and for energy management in buildings. It…

Comet T3418 indoor temperature and humidity sensor with RS485 output
In stock
216,77 € excl. VAT
262,29 € incl. VAT
262,29 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
The Comet T3418 indoor sensor is designed for measuring indoor temperature and relative humidity and for energy management in buildings. It…

Comet T3318 indoor temperature and humidity sensor with RS232 output
In stock
151,30 € excl. VAT
183,07 € incl. VAT
183,07 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
The Comet T3318 indoor sensor is designed for measuring indoor temperature and relative humidity and for energy management in buildings. It…

Comet T3218 indoor temperature and humidity sensor with 0-10V output
In stock
173,25 € excl. VAT
209,63 € incl. VAT
209,63 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
The Comet T3218 indoor sensor is designed for measuring indoor temperature and relative humidity and for energy management in buildings. It…


Measuring and recording control panel with alarms Comet MS6D
In stock
1 173,65 € excl. VAT
1 420,12 € incl. VAT
1 420,12 € incl. VAT
Temperature range (max) | 1800 °C, depends on the type of sensor |
---|---|
Temperature range (min) | -200 °C, depends on the type of sensor |
Humidity measurement range | 0 to100%, depends on the type of sensor |
CO2 measurement range | depends on the type of sensor |
The Comet MS6D monitoring panel offers measurement of temperature, humidity, pressure, CO2, voltage, current, pulse and other variables. It…