Milesight
EM300-TH Temperature & Humidity Sensor
Learn more about damp & mould compliance →Temperature & humidity
Temperature
Humidity
What It Does
Built for temperature & humidity.
A temperature and humidity sensor, IP67-rated with a five-year battery. The core measurement behind damp and mould risk — the sensor that underpins Awaab's Law monitoring. LoRaWAN decoder: Milesight EM300-TH payload decoder & codec (GitHub)
Highlights
Awaab's Law monitoring
Tracks temperature and humidity continuously, providing the logged evidence that social landlords need to demonstrate compliance with Awaab's Law damp and mould duties.
Ten-year battery life
A single ER18505 Li-SOCl₂ cell lasts over ten years at a 10-minute reporting interval — fit it once and it will still be reporting when the next inspection cycle comes around.
IP67, EN12830 certified
Fully dust-tight and waterproof, with EN12830 certification confirming suitability for temperature-sensitive environments such as plant rooms, storage areas and external locations.
Specification
Datasheet (PDF) ↓- Temperature range
- −30 °C to +70 °C
- Temperature accuracy
- ±0.6 °C (−30 °C ~ 0 °C), ±0.3 °C (0 °C ~ 70 °C)
- Temperature resolution
- 0.1 °C
- Humidity range
- 0–100% RH
- Humidity accuracy
- ±3% RH (10–90% RH @ 25 °C), ±5% RH (0–10% and 90–100% RH @ 25 °C)
- Humidity resolution
- 0.5% RH
- Battery
- 1 × 4,000 mAh ER18505 Li-SOCl₂ (8,000 mAh version optional)
- Battery life
- Over 10 years (SF7, EU868 & US915, 10-min interval @ 25 °C)
- LoRaWAN frequency
- CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1&2&3&4
- Dimensions
- 88.5 × 85.3 × 27 mm
- Weight
- 95.6 g (with 1 battery)
- IP rating
- IP67
- Operating temperature
- −30 °C to +70 °C
- Certifications
- CE, FCC, ISED, RCM, Telec, ISACA, EN12830, RoHS
- SKU
- EM300-TH-EU868
Complete The Setup
You will also need a gateway.
Every LoRaWAN sensor needs a gateway to reach the internet. One gateway covers a whole building — the Milesight UG65 is the standard choice for most sites.
On The Platform
A device on its own, or part of the bigger picture.
Buy this device and run it yourself, or have it monitored on the Planetic platform — live dashboards, standards tracking and automatic alerts, with the compliance evidence kept for you.
Questions
Good to know.
- Do I need anything else to use this device?
- Every LoRaWAN sensor needs a gateway to reach the internet. One gateway covers a whole building — the Milesight UG65 is the standard choice for most sites. The gateway itself does not need a sensor to run.
- Is the price ex VAT?
- Yes — all prices shown are ex VAT. VAT is added at checkout where applicable.
- Can I have it monitored on the Planetic platform?
- Yes. Buy the device outright and run it yourself, or have it monitored on Planetic — live dashboards, standards tracking and automatic alerts, with compliance evidence kept for you.
Get Started
Ready to order, or want to talk it through?
Add it to your cart for checkout, or book a call and we will confirm quantities and the gateway you need for the building.