LSS252331 Schneider ENOcean Wireless Temp Humidity Sensor 868MHz
Solar
The Schneider Electric LSS252331 is a wireless room temperature and
humidity sensor from the EcoStruxure Building Expert ENOcean
platform. Operating on the self-powered ENOcean radio protocol at
868.3 MHz, it harvests energy from ambient light via a solar cell
and an integrated backup battery, eliminating the need for power
wiring entirely. It wirelessly transmits high-accuracy temperature
(0–40°C, ±0.4°C) and humidity (0–100%, ±3%) readings to compatible
ENOcean receivers and building automation controllers, enabling
truly cable-free room sensing.
Its compact square form factor (84 × 84 × 25 mm) in pure white RAL
9010 ABS housing mounts directly to any flat surface with minimal
disruption to existing finishes — ideal for refurbishment projects
where chasing cables is not acceptable.
Discontinued September 30, 2023; after-sales service continues
until end of life.
Technical Specifications
| Part Number | LSS252331 |
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| Series | EcoStruxure Building Expert ENOcean |
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| Product Type | Wireless Temperature + Humidity Sensor |
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| Radio Protocol | ENOcean |
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| Transmission Frequency | 868.3 MHz |
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| Transmission Range | 30 m (with walls) / 300 m (open space) |
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| Temperature Measurement Range | 0–40°C |
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| Temperature Accuracy | ±0.4°C |
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| Temperature Resolution | 0.15°C |
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| Humidity Measurement Range | 0–100% |
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| Humidity Accuracy | ±3% |
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| Humidity Resolution | 0.4% |
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| Power Supply | Solar cell + backup battery (self-powered) |
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| IP Rating | IP30 (EN 60529) |
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| Housing Material | ABS (acrylonitrile butadiene styrene) |
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| Color | Pure white RAL 9010 |
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| Dimensions (H × W × D) | 84 × 84 × 25 mm (3.3 × 3.3 × 1.0 in.) |
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| Weight | 0.05 kg (0.11 lb) |
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| Operating Temperature | -25 to 65°C |
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| Certifications | CE, ETSI EN 301 489-1, ETSI EN 300 220-3, EN 61000-6-2, R&TTE
Directive |
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| Warranty | 18 months |
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| Installation Type | Indoor, surface mounting |
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| Commercial Status | Discontinued Sep 30, 2023 (no replacement announced) |
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Applications
- Widely used in EcoStruxure Building Expert deployments in small
commercial buildings across Europe, where the 868 MHz ENOcean band
is the dominant wireless building automation frequency
- Ideal for heritage buildings and historic properties where drilling
for cable routes is prohibited or prohibitively expensive
- Perfect for open-plan offices undergoing HVAC rezoning, allowing
deployment and repositioning as zone boundaries change without any
rewiring
- Provides excellent value density for small building owners managing
operational budgets with dual temperature and humidity output in a
single compact device
- Post-discontinuation demand remains strong for existing EcoStruxure
Building Expert installations requiring sensor replacement or
expansion
