NEO-1D is a sensor and data logger with an e-ink display that wirelessly monitors temperature, humidity, VPD, heat index, and dew point for up to 3+ years on battery power. Ideal for climate-sensitive environments with 24-hour monitoring, real-time alerts, logs, and reports.
-25°C to 60°C operating range. ±0.2°C accuracy across 0–90°C.
0% to 100% relative humidity with typical precision loss near saturation.
Derived "feels-like" temperature combining air temperature and RH.
Condensation risk indicator — essential for HVAC and storage applications.
Vapor pressure deficit — critical for greenhouses and horticulture.
Low-energy radio with 328 ft (100 m) broadcasting range and 4 dBm transmit power.
Upgradable to iMatrix Massive Mesh for networks of hundreds or thousands of sensors.
Over-the-air firmware updates via the Micro Gateway — no physical handling required.
| Device type | Temperature and humidity sensor with display |
|---|---|
| Measures | Temperature, humidity, heat index, dew point, air VPD |
| Temperature range | -4°F to 140°F (-25°C to 60°C) |
| Temp accuracy | ±0.2°C @ 0–90°C typical |
| Humidity range | 0% to 100% |
| Dimensions | 3.19 × 1.77 × 0.87 in (81 × 45 × 22 mm) |
| Weight | 2.13 oz (60.5 g) |
| Waterproof rating | IP66 (waterproof, dust proof) |
| Network type | Bluetooth Low Energy |
| BLE certification | Bluetooth Cert (EPL 0.3.2019) |
| Broadcasting range | 328 ft (100 m) |
| Tx Power | 4 dBm |
| On-device storage | 100,000 readings + external flash |
| Battery | 1200 mAh (ER14250) |
| Battery life | Up to 3+ years |
| Display | E-ink display screen |
| Features | BLE-based · measures, stores, uploads · 6 months of on-device logging · Massive-Mesh upgradable |
| Certifications | CE · FCC |
We recommend the iMatrix Micro Gateway to automatically scan, connect, and send NEO-1D data to the cloud. For massive networks, upgrade to the Series-1 Gateway.
0% to nearly 100% RH. Accuracy decreases as you approach 100%. For condensing environments pair with the Neo-1P external probe.
Three ways: read current values directly off the e-ink display, view historical graphs in the iMatrix Cloud web portal, or open the mobile app.
The casing protects against high humidity, but the sensor body cannot be fully submerged. For immersion applications use the Neo-1P probe-extension variant.
Yes — in iMatrix Cloud you can configure reading intervals from seconds to once per day. More frequent readings shorten battery life.