RS-485, Modbus RTU Hybrid wall-mounted sensor
WB-MSW v.4 wall sensor
Temperature, humidity, illumination, noise, CO2 and VOC level, motion sensor, IR-transmitter-receiver
WB-MSW v.4 wall sensor
Retail price
from $56.90 to $294.83
depending on options
In stock 2763 pcs. ,
  • 2,763 pieces are already at the warehouse
  • 5452 more in 2-3 months

Combined digital sensor for temperature, humidity, light, motion, noise, CO2 and volatile organic compounds. Has a built-in receiver and transmitter of IR signals for controlling household appliances. Designed for climate control in residential and office premises.

There are wireless versions: WB-MSW-LORA v.4 and WB-MSW-ZIGBEE v.4.

Main characteristics

  • 8 measured parameters in one housing.
  • Heated temperature and humidity sensor for operation in high humidity conditions.
  • Auto calibration of CO2 and VOC sensors.
  • Controlled sound and light indication.
  • Powerful IR transmitter with a range of up to 10 m.
  • Paintable body.
  • You can select the options you need.
  • Fast and simple integration into the automation and monitoring system.
  • It is possible to apply your company logo.

Supports Fast Modbus, allowing motion sensor events to be instantly delivered to the Wiren Board controller.


Measured parameters:

  • Temperature: -40°С…+80°С (±0.5°С).
  • Humidity: 0…95% (±3%).
  • Illumination: 0.02…145000 lux.
  • Noise level: 39…90 dBA.
  • CO2 concentration: 400…10000 ppm.
  • VOC concentration: 0…60000 ppb.
  • Movement: up to 8 m, angle up to 120°.
  • Transmission of IR commands: up to 10 m.
  • Controlled buzzer.
  • Two-color indication controlled via Modbus.
  • Sensor heating for operation in high humidity conditions.
  • Supply voltage: 9 to 28 VDC.
  • Power consumption: from 0.5 to 4 W.
  • Interface: RS-485, Modbus RTU.
  • Plastic case with the possibility of mounting on a socket box (80x80x19 mm).
Management devices via IR

WB-MSW v.4 has an infrared transceiver for recording signals from IR remote controls of household devices and further control of household appliances: air conditioners, TVs, thermal curtains etc.

The sensor's non-volatile memory can store up to 80 IR commands. Commands are recorded using the remote control equipment.

Working with IR commands is described in detail in documentation.

Level control CO2

CO2 (carbon dioxide) is a colorless gas with a slight sour odor, heavier than air. It is always present in the air and is harmless to humans in small quantities. CO2 does not support breathing, so at high concentrations it negatively affects a person’s condition and can lead to death from suffocation.

WB-MSW v.4 uses a non-dispersive infrared (NDIR) sensor to measure CO2 concentration. It allows measurements with an error of 100 ppm + 5% of the measured value.

VOC control

Volatile organic substances (VOCs, VOC) are substances released into the atmosphere in the form of gases: evaporation of varnishes/paints and elements of interior decoration (phenol, formaldehyde, toluene, styrene), alcohols, benzene, rotting vegetables, gases emitted by humans, household gas. High concentrations of hazardous VOCs pose a threat to human life and health.

The VOC sensor determines the total concentration of these substances with a typical error of ±15%.

Fast Modbus support

All Wiren Board devices, in addition to the standard Modbus RTU, can work with its extension Fast Modbus ⚡, which adds new features:

  • instant polling of input states and measured values via events;
  • quick search for devices connected to the controller;
  • resolving address collisions on the bus.

Additional features are enabled automatically - if the device supports extension, the controller driver will work with the device quickly Modbus if the device does not know anything about the extension - it will work using standard Modbus RTU.

Quality control at every stage production

We develop and manufacture all Wiren Board devices ourselves. All devices undergo multi-stage quality control:

  • During development — checking the components used for compliance with the declared characteristics and testing the prototype device at extreme operating conditions.
  • After installing SMD components — automated optical inspection.
  • After soldering the lead components — visual inspection of soldering.
  • After assembling the device — functional testing on an automated stand.
  • When shipped to the warehouse — control of completeness, stickers, appearance.

Thanks to this approach, the failure rate is no more than 0.5% of all released devices. Read more in the article About device reliability.

If the device fails within two years from the date of purchase, we will replace it for free without the need to send it to a service center.


When used with a Wiren Board controller, you can use the mouse in the web interface:

  • configure auto-calibration of the CO2 sensor and self-heating compensation,
  • set the averaging time for noise and motion,
  • enable or disable parameter polling.

When used with other equipment, the sensor can be configured via the RS-485 bus by writing values to Modbus registers. The register table is open, well documented and available on our website.

Reading the readings

If a Wiren Board controller is used, the measured values are available in the controller's web interface and can be used in automation scripts or transferred to a higher-level system. Only the included channels are displayed in the device card.

The module also transmits all data via Modbus RTU (RS-485), which can be read by any equipment or software that supports this protocol: third-party controllers, HMI panels or SCADA.


Legal purchase terms

General provisions

1. These terms of sale is developed on the basis of the RF Civil code, RF Law on February 7, 1992 № 2300-1 "On consumer protection", decrees of the Government of the Russian Federation of September 27, 2007 № 612 "On approval of rules of sale of goods remote way" and other normative-legal acts. These rules regulate the procedure for retail purchase and sale of Goods through the online store, being a public offer addressed to individuals and legal entities ("Buyers").

2. the Buyer accepts the terms and conditions set out in these terms and conditions by placing an Order on the online store's website.
An order is considered to have been executed properly if the Buyer provides the Seller with the following information: the buyer's last Name, first Name, phone number, address to deliver the Product, Product name, quantity.

2.1. the Buyer grants the Seller the right to use all personal data transmitted in the Order in order to fulfill its obligations to the Buyer, form and develop a loyalty program for Buyers, and inform Buyers about the news of the online store. The right of use in these terms is understood as the Seller's right to: collect, record, systematize, accumulate, store, clarify (update, change), extract, use, depersonalize, block, delete, destroy data with the right to transfer such data to third parties without further notice to the Buyer.

3. when selling goods remotely, the Seller offers the Buyer services for the delivery of Goods by delivery Services. In this case, the specific delivery Service for each Order is determined by the Buyer when placing the order.
Delivery is available on weekdays from 9: 00 to 18: 00. Delivery times depend on the selected region and range from 1 to 14 business days (not counting the day of the order). The delivery period may be extended in cases stipulated by the delivery Service's operating rules. Delivery is carried out without demonstration. If you do not agree with the delivery terms, You have the right to cancel your order at any time before receiving it.
For more information about regional delivery rates, please visit the website of courier services: SDEK, KSE, EMS.
If the Buyer refuses the Product, the Buyer is charged the cost of delivery in accordance with the tariff in accordance with paragraph 21 of the Decree of the Government of the Russian Federation of 27.09.2007 No. 612 "on approval of the rules for the sale of goods by remote means".
When receiving the Product from the delivery Service, the Buyer must check the appearance of the product packaging (for the absence of deformation, opening). When receiving the Goods, the Buyer puts his signature in the delivery receipt in the box: "I confirm that the shipment was received in closed form, there are no external damages to the packaging, bandages, seals, and the weight of the shipment corresponds to the weight determined when it was received."
If any defects are found on The product packaging, the Buyer must make a note of this in the delivery box on the courier's receipt. After receiving the Order and putting the signature of the Buyer in the receipt in the delivery column without specifying claims to the appearance of the product packaging, claims to external packaging defects (its opening and possible incompleteness of the Product) are not accepted.

4. Payment for ordered Products is made:
By Bank transfer on the invoice issued for the Buyer.A plastic card based on the link generated for the Buyer.

5. Order processing is made in the working days from 10:00 to 18:00 Moscow time. If you place your order after 18:00 Moscow time, our managers will contact you on the next business day after 10:00 am.

6. the Product is of good quality, you can return it within fourteen days from the date of receipt of the Order, provided that the product has not been used.
To do this, you need to write an email with a request for a refund/exchange to
Please note that if the Buyer refuses the Product, the Seller returns the amount paid by the Buyer for the Product, with the exception of the Seller's expenses for delivery of the returned Product from the Buyer, no later than 10 days from the date of submission of the corresponding claim.

7. the Warranty period for the Product is set at 24 months from the date of shipment.

8. the Risk of accidental loss or accidental damage to the Product passes to the Buyer at the time of transfer of the Product and the Buyer's signature in the documents confirming the delivery of the Order. Ownership of the Product passes to the Buyer at the time of transfer of the Product, subject to full payment.

9. the legislation of the Russian Federation applies to the relations between the Buyer and the Seller.

10. the Seller reserves the right to make changes to these terms of sale, and therefore the Buyer undertakes to regularly monitor changes in the Rules posted on the website of the online store. The Seller must post a notice of changes to these terms of sale no later than 7 (seven) calendar days before their effective date.

11. the Buyer guarantees that all the terms of these terms of sale are clear to him, and he accepts them unconditionally and in full.

12. the Invalidity of any provision of these Rules does not entail the invalidity of the remaining provisions.

13. all disputes arising between the Parties will be resolved through negotiations. if an agreement is not reached, the dispute will be referred to the arbitration court of Moscow in accordance with the current legislation of the Russian Federation.