Introducing a brand-new line of air quality sensors

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26/3/19 Let us introduce a brand-new line of air quality sensors combining broad connectivity, measurements of six quantities at once and compact on-wall installation.   

Basic characteristics

The RW/RLW sensor line is designed for measurements of interior air quality in houses, office buildings, schools and other similar buildings. The sensor itself is placed in a compact on-wall plastic box with IP20 protection with easy installation. Aside from the default design, customers can also purchase a special "Anti-Vandal" version made from durable anodized aluminium. A variant for interiors with higher aesthetic requirements is also available. 

All four models offered can be used to measure temperature, relative air humidity, VOC and barometric pressure with -THC models being able to also measure the carbon dioxide concentration with a LED indication (green = low CO2 concentration, red = high CO2 concentration). Currently, we are also developing a dust sensor for measuring the concentration of dust particles. 

Model overview
Model Temperature Humidity CO2 VOC Bar. pressure Dust*
RLW-TH × ×
RLW-THC ×
RW-TH × ×
RW-THC ×

*dust sensor is under development

Broad connectivity

Sensors feature an onboard web server and support communication through RS485 interface (Modbus RTU protocol) Sensors can also communicate wirelessly via Wi-Fi (Modbus TCP, REST API interface) - the initial configuration can be performed in AP mode with the device subsequently operating in client mode. RLW-TH and RLW-THC models then support the LoRaWAN wireless technology featuring a combination of long signal range and very low energy consumption. The product will be delivered with a free Mervis database licence. 

Model RS485 Wi-Fi LoRaWAN
RLW-TH
RLW-THC
RW-TH ×
RW-THC ×

 


A screenshot of the web server interface

Technical parameters

Basic characteristics
Power supply 5-24V DC, 250ma
(microUSB/terminal box)
Dimensions 120×80×25 mm
Installation on-wall installation box (IP20)

 

Measurement parameters
Air temperature -40°C / +85°C
Relative air humidity 0-90% RH non-condensing
CO2 concentration 0 - 10 000 ppm
VOC concentration IAQ Index 0-500
Barometric pressure 300 - 1100 hPa
Solid particle concentration 
(PM10, PM2.5)
0,0 - 999,9 μg/m3

 

Inputs & Outputs
Digital output max. 24V DC 50mA

 

Communication interfaces
Wi-Fi (AP client) 802.11 b/g/n 2,4 GHz (REST API)
LoRaWAN Class A, 14dBm, SF 7-12, 868 MHz 
(ABT support, OTAA activation)
RS485 Modbus RTU

Further info



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