DAISY-THUM-CCylindrical Daisy Chained
Temperature & Humidity Sensor
for data center white spaces
ISO17025 calibrated
Cylindrical Daisy Chained
Temperature & Humidity Sensor
for data center white spaces
ISO17025 calibrated
Temperature & Humidity Sensor
for data center white spaces
ISO17025 calibrated
Up to 40 sensors on a single string, one base unit & one IP address.
ISO17025 calibrated temperature, NIST traceable humidity.
Free hanging from the ceiling in hot & cold aisles.
No wireless interference, no batteries to replace.
±0.5°C / ±0.9°F accuracy, 0.02°C / 0.36°F resolution.
Plug & play — no PC or software required.
SNMP, Modbus TCP & BACnet IP ready via the base unit.
ISO17025 calibrated temperature, NIST traceable humidity.
Free hanging from the ceiling in hot & cold aisles.
No wireless interference, no batteries to replace.
±0.5°C / ±0.9°F accuracy, 0.02°C / 0.36°F resolution.
Plug & play — no PC or software required.
SNMP, Modbus TCP & BACnet IP ready via the base unit.
Placement quick reference — cold aisle, at server inlet height:
Height: 1.5m / 5ft above the floor
Spacing: 2m / 6ft between sensors
Cadence: every 3rd to 4th rack
Open Protocols — Any BMS
SNMP, Modbus TCP and BACnet IP straight out of the base unit. Integrates with any BMS, DCIM or NMS over standard protocols — no proprietary gateway, no cloud dependency, no vendor lock-in.
Standards Based Placement
Where to hang each sensor: 1.5m / 5ft above the floor at server inlet height, 2m / 6ft apart in the cold aisle, per ASHRAE guidance.
Continuous Data, No Batteries
Wired and powered from the base unit: an unbroken measurement history with no battery replacements, no dropouts and no sensors silently going dark.
ISO17025 Calibrated
Temperature calibrated to ISO 17025 and humidity NIST traceable — measurements you can put in front of an auditor.
Up to 40 Sensors, One IP
A single DAISY-STARTER controller chains up to 40 sensors on one base unit — one IP address for a whole aisle.
Built for Hot & Cold Aisles
Free hanging from the ceiling, the cylindrical form factor measures the air where it actually enters the racks.
Raise Set Points Safely
Cooling is 30-40% of facility energy. Real inlet data across the aisle is what lets you raise set points toward the ASHRAE ceiling without gambling on the hottest rack.
Cabling & Voltage Budget
CAT6/7 up to 100m / 330ft with a 9V minimum at the sensor — and the DAISY-BOOSTER to lift the string back to 14V on long runs.
Technical Specifications
Full accuracy, range, electrical, mounting and physical specifications for the DAISY-THUM-C.
Designed for Hot & Cold Aisles
With daisy chained sensors, data center operators monitor their racks at a lower cost of ownership than most wired and wireless alternatives. Using just one base unit and one IP address, up to 40 temperature & humidity sensors are deployed across your cold and hot aisles.
The cylindrical enclosure is designed to hang free from the ceiling on its cable rather than sit on a rack door, so the sensor sees the air in the aisle itself and installation does not depend on the cabinet type.
The cylindrical enclosure is designed to hang free from the ceiling on its cable rather than sit on a rack door, so the sensor sees the air in the aisle itself and installation does not depend on the cabinet type.
Continuous Data, No Battery Replacements
An environmental record is only worth what its gaps allow. Wireless sensors interrupted by WiFi or LED interference, and battery powered sensors that quietly reach end of life, leave holes exactly where an auditor or a post-incident review will look.
The DAISY-THUM-C is wired and powered from the base unit, so the measurement runs unbroken from commissioning onward.
The DAISY-THUM-C is wired and powered from the base unit, so the measurement runs unbroken from commissioning onward.
- Unbroken history: continuous readings you can report compliance hours against, not a series of samples with gaps.
- No battery replacements: no battery inventory, no replacement schedule, no truck rolls, no sensors silently going dark.
- No radio planning: no RF survey, no channel planning and no dead spots behind containment panels.
- Nothing added to your attack surface: no wireless devices to bring into your security posture.
- Lower cost of ownership: one cable run and one IP address per aisle, with no recurring battery or gateway cost.
Customize your sensor: color / enclosure / logo
custom color & logo
Not a fan of orange? Want the sensors to match the color of your mission critical infrastructure equipment? Want to reflect your corporate color? Want to feature your own logo?
custom enclosure
Need the sensors in a custom enclosure to fit your application? Together with our partners, we can help to design special enclosures to meet your requirements.
Contact us for pricing & more info
Custom Sensor Design
Do you need the sensor to be customized to meet specific requirements?
Do you need features added or changed?
Do you need different enclosures?
Do you need to combine multiple sensors?
Whatever your project is, let us know what you need. Together with our engineering team we can make the product that you need.
Contact us to discuss your project & requirements
Do you need features added or changed?
Do you need different enclosures?
Do you need to combine multiple sensors?
Whatever your project is, let us know what you need. Together with our engineering team we can make the product that you need.
Contact us to discuss your project & requirements
RS485 (Modbus RTU) version
Looking to integrate this sensor with your own gateway or industrial control system? For large accounts customers or OEMs we now do offer a RS-485 version of this sensor. It has the same specs as the normal sensor. However rather than talking to our base unit and then communicate over industrial protocols with 3rd party systems, this version allows for native integration bypassing our base units.
It offers the same features as our regular sensors but with following differences:
- RS485 Modbus RTU output
- individually addressable using dial switch
- 256 addresses available
- 12-24v DC input
Contact us for pricing & more info
It offers the same features as our regular sensors but with following differences:
- RS485 Modbus RTU output
- individually addressable using dial switch
- 256 addresses available
- 12-24v DC input
Contact us for pricing & more info