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Humidity & Temperature Transmitter for Wall or Outdoor Mounting SE-MQ series
- Power supply:12-36V DC
- Humidity sensing element:Polymer humidity capacitor
- Signal output for humidity:0~5V DC or 0~10V DC or 4-20mA or RS485 signal
- Repeatability:+-0.3%RH
- Drift rate per year:+-0.5%RH
- Storage temperature range:40..80Celsius

Full range temperature compensated! The best quality and good price!
Selectech capacitive humidity element based humidity & temperature transmitters are ideal solution for detecting relative humidity and temperature in applications such as HVAC in residential & commercial buildings.
The capacitance element based transmitter is one of the most stable transmitters available and no recalibration required, transmitters are temperature compensated and calibrated.
Selectech transmitters are problem-free and accurate with long-term reliability by apply unique HydroProbe® digital technology, our transmitters are developed for high-precision measurement of relative humidity & temperature and transmitters are available for wall & duct & outdoor mounting.
All Selectech transmitters can be equipped with industrial-class LED display, LED shows both humidity and temperature.
Specs&Description:
Power supply |
12-36V DC |
|
Humidity working range |
0..100%RH |
|
Humidity sensing element |
Polymer humidity capacitor |
|
Signal output for humidity |
0~5V DC or 0~10V DC or 4-20mA or RS485 signal |
|
Accuracy of humidity |
+-2%RH(10-95%RH, 25Celsius); <+-5%RH(-40..80Celsius) |
|
Repeatability |
+-0.3%RH |
|
Hysteresis |
+-0.3%RH |
|
Sensitivity for humidity |
0.1%RH |
|
Drift rate per year |
+-0.5%RH |
|
Temperature sensor |
DS18B20 |
|
Accuracy for temperature |
+-0.3Celsius(at 25Celsius) |
|
Output for temperature |
0~5V DC or 0~10V DC or 4-20mA or RS485 signal |
|
Measuring temperature range |
Customer can select measuring temperature range by dialing switches on PCB board: 0~50Celsius, -20~80Celsius, -40~60Celsius |
|
Storage temperature range |
-40..80Celsius |
|
Case |
ABS |
|
Electrical connection |
Screw connector Max1.5mm2 |

Ordering guide:
SE-MQ3005, output 0~5V DC for humidity & temperature both, without LED display
SE-MQ3105LED, output 0~5V DC for humidity & temperature both, with LED display
SE-MQ3010, output 0~10V DC for humidity & temperature both, without LED display
SE-MQ3110LED, output 0~10V DC for humidity & temperature both, with LED display
SE-MQ3020, output 4~20mA for humidity & temperature both, without LED display
SE-MQ3120LED, output 4~20mA for humidity & temperature both, with LED display
SE-MQ3485, RS485 signal for humidity & temperature both, without LED display
SE-MQ3485LED, RS485 signal for humidity & temperature both, with LED display



1.Established in 2005, about 10 years of history;
2.Owns main factories, supply diversification products and One stop service service
3.Certificates of ISO9001, UL, CE, SGS,EMC,CQC,Reach,etc
4.Six years Gold member in Alibaba, Aliexpress etc
5.Production capability more than 100 thousands pcs/ month;
6.Monthly export more than 50 times delivery;
7.Exported to more than 20 countries and regions;
8.We provide an excellent combination between prices, quality & respond,delivery,after-sales!
