W7811 IoT wireless thermometer, hygrometer, barometer for external sensor, Sigfox COMET

Description

W7811 nThe appliance measures temperature and humidity with an external sensor (named as probe) on the cable (optional).

Compared to the W3811, the W7811 is additionally equipped with an internal atmospheric pressure sensor. This sensor is characterised by its simple and compact design, with the possibility to be installed directly in the measurement room. It is also suitable for measurements in areas where there is a possibility of poor Sigfox reception. The probe can be used with a suitable sensor cap, even in harsh conditions.

The measured values are sent at a configurable time interval (from 10 minutes to 24 hours) via radio transmission over the Sigfox network to the COMET cloud, from which they can be viewed by the user using a PC or mobile device.

The instrument can monitor up to 2 alarm limits of the measured variable. If you exceed these limits, the device will warn you by sending you a message. COMET Cloud sends this alarm message by email to the selected user. The device is suitable for applications that allow a delay in the information provided by Sigfox (maximum 10 minutes).

 

Benefits

• wireless transmission of measured values and alarm status
• battery with low battery indication
• possibility to manage settings remotely from COMET Cloud (maximum 1x per day)
• protection class IP 65
• the availability of the Sigfox network in a given area

Before buying a device, check the availability of the Sigfox network. COMET devices on the Sigfox network can be used anywhere in the RCZ1 area. Read more about Sigfox Radio Zones (RC).

 

Features of W7811

Temperature sensor

• measuring range: depending on the connected Digi/E probe
• accuracy: depending on the connected Digi/E probe
• resolution: 0.1 °C
• response time t90: depending on the connected Digi/E probe

Humidity sensor

• measuring range: depending on the connected Digi/E probe
• accuracy: depending on the connected Digi/E probe
• resolution: 0.1 % RH

Rosišče (dew point)

• measuring range: depending on the connected Digi/E probe
• accuracy: depending on the connected Digi/E probe
• resolution: depending on the connected Digi/E probe

Atmospheric pressure sensor

• measuring range: 600 … 1100 hPa
• Accuracy: ±1.3 hPa at 23 °C from 800 to 1100 hPa
• resolution: 0.1 hPa

 

GENERAL TECHNICAL DATA

• ambient temperature: -30 … +60 °C
• Inputs: internal atmospheric pressure sensor, temperature and humidity probe
• operating frequency: 868 MHz
• maximum transmission power: 25 mW
• Sigfox radiation class: 0U
• radio-configuration area: RCZ1
• typical range of the transmitter: 50 km in open terrain, 3 km in urban areas
• power supply: lithium battery 3.6 V, size AA
• Protection class: IP 54
• dimensions: 126 x 89 x 40 mm
• weight: 150 g
• Warranty: 3 years
• Standards:CE
• Set includes: the W7811, user manual, calibration certificate with traceability, 1x 3.6 V lithium battery, Sigfox connection for 1 year, COMET Cloud for 1 year, FREE COMET Vision analytical software

 

There are several videos to help you set up your device: creating a Cloud profile and monitoring during data transfer.

You can find much more useful information in the Documentation tab.