Wireless Temperature and Humidity Sensor Probe

Zigbee based temperature sensor for data centers and server rooms
Wireless Temperature & Humidity Sensor for Data Centers

wireless temperature & humdity sensor

Click for a 360 virtual tour of the wireless temperature sensor
The industry standard set by ASHRAE is to monitor each rack's environment with 6 temperature and 1 humidity sensor. Data Center operators are confronted with 2 key issues when monitoring temperature at a rack level using the ASHRAE standards: cabling and IP addresses. Traditional wired sensors are not an option: they require cabling and IP addresses. Wireless technology enables to overcome those issues: no cabling required and one IP address for many sensors.

This sensors can monitor 2 metrics: temperature and humidity. For humidity, 1 temperature and humidity sensor per rack is required when following the ASHRAE standard. Humidity should be kept within a 40-60% rH is critical to safeguard the hardware in the racks. ASHRAE recommends 6 temperature sensors per rack: 3 in the front of the rack and 3 at the back of the rack. The front of the rack monitors the intake temperature, the back of the rack the outtake temperature. The delta between intake and outtake temperature should never exceed 20C/35F. For temperature only, the wireless temperature sensors can be used.
The sensors communicate over AES encrypted Zigbee protocol (2.4 Ghz) with the wireless hub that connects to the base unit. A wireless hub can accomodate up to 15 temperature+humidity sensors or up to 30 temperature only sensors. The sensors have to be in a 10m/30ft line a sight range of the wireless hub.

For easy installation in a rack, the sensors have a magnet at the back allowing them to snap into the rack. The sensors are powered using a coin battery (not included) and have a 1 year battery life span.


Technical Specifications - Wireless Temperature & Humidity Sensor Probe (ENV-W-THUM)
Wireless Temperature & Humidity sensor Temperature Resolution: 0.1C (0.18)F precision
Temperature Accuracy: +/- 0.5C (+/- 0.9 F) over 0C to +60C
Readings in Celsius or Fahrenheit
Relative Humidity Measurement Range: 0 to 100 % RH
Relative Humidity Resolution or precision: 0.1 % RH and 1 % RH
Relative Humidity Accuracy: +/- 2 % RH between 10 % RH to 90 % RH and +/- 4 % RH below 10 % RH and above 90 % RH
Relative Humidity Long Term Stability: < 1 % RH/year
Battery life time: 1 year
Battery type: coin - CR2450 (not included)
Data update frequency: Every 3 minutes
Wireless protocol: Zigbee
Up to 15 wireless temperature & humidity sensors per wireless hub supported
Maxmimum distance to Wireless Hub: 10m or 30ft with direct line of sight
Certified SensorGateway operating temperature range: 0C to +60C (32F to +140F)
Operating humidity range: < 90% rH (non-condensating)
Dimensions: 55 mm (2.1") x 30 mm (1.1") x 13 mm (0.5")
Housing: Orange plastic case with status led
Magnetic or adhevise mounting
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Battery status page
1 year battery life
the standard coin battery (CR2450) can be easily replaced. battery status is indicated in the SensorGateway
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Wireless sensors using Zigbee
Compared to RF, Zigbee coexists better with other wireless technologies. It has demonstrated a super tolerance to extreme interference, has a better reliability. The Zigbee sensors communicate using 128bit AES encryption.
Zigbee Logo
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Externally mounted temperature sensor
External temperature & humidity sensor
the sensors report temperature, humidity and dew point
for higher accuracy, the temperature & humidity sensor is mounted outside the sensor
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Supports up to 15 wireless sensors per hub
only one IP address needed for the base unit to which the wireless hub. The wireless hub supports up to 15 temperature & humidity sensors or 30 temperature sensors
Wireless hub for the wireless sensors
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Magnet to fix wireless sensors
Easy mounting
the sensors come with a magnetic and double sided adhesives to easily mount them on any support