Desk Presence Sensor


The LoRaWAN Desk Occupancy Sensor from Elsys measures both indoor environment and desk availability.

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The LoRaWAN® desk presence sensor from Elsys measures both indoor environments and desk availability. Designed to detect occupancy, the Elsys EMS Desk has a discrete, compact form factor and is ideal for mounting under desks.

This desk presence sensor combines temperature, humidity, accelerometer and body heat sensors in one device. It’s completely wireless, battery operated compact design is ideal for indoor use to give you a full overview of occupancy and conditions in workplace facilities, ideal for open-plan offices and hot-desking environments.

Save both money and office space by installing Elsys EMS Desk sensors. Easily retrofitted and unobtrusive, they are ideal for mounting under desks or tables making it possible to better utilise seating areas and other office spaces. Since people are often standing or sitting still whilst using a desk or break room table, the ERS Desk is equipped with a thermopile to detect presence based on body heat in addition to motion.


  • LoRaWAN® Certified CM
  • Thermopile IR sensor
  • Temperature sensor
  • Humidity sensor
  • Light sensor
  • Motion detection sensor (PIR)
  • Configuration over the air
  • Discrete and minimalistic design



Expected Battery Life Up to 10 years (Depending on configuration and environment)


Wireless Technology LoRaWAN® 1.0.3
Wireless Security LoRaWAN® End-to-End encryption (AES-CTR), Data Integrity Protection (AES-CMAC)
Supported LoRaWAN® features OTAA, ABP, ADR, Adaptive Channel Setup
Available Frequency EU868 (others are available on request)


Weight 10g excluding batteries
Dimensions 21.2mm x 74.9mm x 20.8mm
Enclosure Plastic, PC/ABS
Field of View 60°
Operating temperature 0°C ~ 50°C
Humidity 0 to 85% RH (non-condensing)

Key documents & information

Discounted Trade Pricing: Contact us for trade pricing, to place an order or to discuss your IoT projects.

All of our products are available to customers throughout Europe. For more information on shipping costs, currency conversions and lead times, please contact our technical sales team.

Our technical sales team are also happy to advise customers on the best LoRaWAN occupancy and environment sensors to suit specific project requirements.

Our experts are on hand to help you every step of the way
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Additional information

Weight 10 g
Dimensions 21.2 × 74.9 × 20.8 mm



Measurements Taken

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Power Source

AA Batteries



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