Descrição
The Elsys EMS Desk is a LoRaWAN desk occupancy sensor for hybrid offices, co-working spaces and libraries. Mounted under the desk, it detects whether the desk is in use and also measures temperature and humidity, without a camera. It gives facility teams real desk utilisation data for hot-desking and space planning, on a battery that lasts up to 5 years.
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Key features
- Desk occupancy detection up to 50 cm with a 60° field of view horizontally and vertically.
- Temperature and humidity at desk level.
- Small and discreet: 74.9 × 21.2 × 20.8 mm, 15 g, adhesive tape included.
- Battery life up to 5 years on 1 × AA 3.6 V lithium battery (ER14505), depending on settings.
- NFC set-up from a smartphone or by downlink; LoRaWAN 1.0.4 Class A with end-to-end encryption.
Which frequency plan do I need?
| LoRaWAN region | Typical markets | Supported by Elsys |
|---|---|---|
| EU868 | Europe, Middle East, Africa | Yes |
| US915 | North and South America | Yes |
| AU915 | Australia, New Zealand, parts of Latin America | Yes |
| AS923 | Asia-Pacific | Yes |
| IN865 | India | Yes |
| KR923 / HK923 | South Korea / Hong Kong | Yes |
This shop lists one EMS Desk variant (SKU EMS-DESK). Contact us to confirm the frequency plan for your country before ordering.
Mounting
Mount the sensor underneath the desk, 10–20 cm from the front edge, with the opening pointing towards the person at the desk. Let it calibrate overnight, and keep it away from radiators, hot objects and air vents, which can disturb detection.
Technical specifications
| Measurements | Desk occupancy, temperature, humidity |
| Detection | Up to 50 cm, 60° horizontal and vertical field of view |
| Wireless | LoRaWAN 1.0.4, RP2-1.0.3, Class A; OTAA, ABP, ADR |
| Security | End-to-end encryption (AES-CTR), data integrity (AES-CMAC) |
| Link budget / RF power | 137 dB (SF7) to 151 dB (SF12); max 14 dBm EIRP |
| Power | 1 × AA 3.6 V Li-SOCl2 (ER14505), not included; up to 5 years |
| Environment | Indoor, IP20, 0 to 50 °C, 0–85 % RH non-condensing |
| Dimensions / weight | 74.9 × 21.2 × 20.8 mm, 15 g |
| Compliance | RED 2014/53/EU, RoHS 2011/65/EU, WEEE 2012/19/EU |
Source: Elsys EMS Desk LoRa product page (current EMS2 Desk generation).
Sensor and software: what you get
On the sensor: occupancy, temperature and humidity readings. In software: desk and space utilisation in VemSpace, with a 60-day free trial (see software plans).
Installation and accessories
Connect through a LoRaWAN gateway such as the Milesight UG65. For meeting rooms add the Elsys ERS; for desks and seats with a different technology see the Milesight VS341.
Frequently asked questions
Where do I mount a desk occupancy sensor?
Under the desk, 10–20 cm from the front edge, pointing towards the person sitting or standing at the desk.
How long does the EMS Desk battery last?
Up to 5 years, depending on settings and environment.
Does the EMS Desk use a camera?
No. It detects occupancy without images and is anonymous.
Which LoRaWAN frequencies are supported?
Elsys lists EU868, IN865, US915, AU915, AS923, KR923 and HK923.