# Indoor/outdoor temperature and humidity sensor Milesight EM300TH915M freestanding, 4000 mAh battery, up to 5 years

**URL:** https://aio.lv/en/product--milesight-em300-mcs-868m--10457263
**Data updated:** 2026-03-07 15:19 (EET)
**Category:** Smart Sensors
**Manufacturer:** Milesight
**Manufacturer code:** EM300-MCS-868M
**EAN:** 6974225035779
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 79.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 66.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--milesight-em300-mcs-868m--10457263

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

Milesight EM300TH915M is a freestanding indoor/outdoor temperature and humidity sensor designed for environmental monitoring. It measures ambient temperature and relative humidity, runs on a 4000 mAh battery with up to 5 years battery life, and has compact dimensions (88 × 87 × 27 mm). Suitable for building monitoring, HVAC checks, storage areas and smart home integration.

## Long description

Milesight EM300TH915M is a freestanding indoor/outdoor temperature and humidity sensor for environmental monitoring. The compact device (88 × 87 × 27 mm) measures ambient temperature and relative humidity using a high-sensitivity Sensirion sensor, offers IP67-rated protection, local data storage for historical records, and operates on a 4000 mAh battery designed to last up to 5 years under typical conditions. It supports reliable wireless communication with retransmission capability and can be configured or powered on/off via NFC from a mobile phone or PC.
Advantages
The sensor delivers high measurement accuracy — approximately ±0.3 °C for temperature and ±3% RH for humidity — suitable for precise environmental monitoring. IP67 waterproofing allows use in exposed indoor or sheltered outdoor locations. Built-in storage retains up to 2800 historical records that cannot be manually deleted, supporting traceability and auditability. Retransmission support improves data delivery reliability when network interruptions occur, and the long-life 4000 mAh battery reduces maintenance frequency. NFC-based configuration simplifies setup and operation without the need to open the enclosure.
Suitable for
Building and facility environmental monitoring
HVAC performance checks and control verification
Storage rooms, warehouses and archives where temperature and humidity must be recorded
Smart home and IoT integrations requiring compact, battery-powered sensors
Temporary outdoor installations in sheltered locations due to IP67 enclosure
Key specifications
Measured parameters: ambient temperature and relative humidity
Temperature range: -30 °C to 70 °C
Humidity range: 0% to 100% RH
Temperature accuracy: approximately ±0.3 °C (Sensirion sensor)
Humidity accuracy: approximately ±3% RH
Enclosure protection: IP67
Battery: 4000 mAh, up to 5 years typical battery life
Local data storage: up to 2800 historical records (non-manually deletable)
Configuration and control: NFC from mobile phone or PC
Mounting: freestanding form factor; compact dimensions 88 × 87 × 27 mm
Communication: supports retransmission for reliable data delivery
How to use
Place the Milesight EM300TH915M on a stable surface or in a sheltered outdoor location where the sensor is exposed to representative ambient air. Use NFC on a compatible mobile phone or PC to switch the device on and configure measurement intervals, thresholds and network parameters according to your monitoring needs. Ensure the sensor is positioned away from direct heat sources, vents and reflective surfaces to avoid biased readings. If wall or bracket mounting is required, use appropriate hardware while maintaining the device orientation recommended in the installation guide.
Usage recommendations
For accurate and long-term performance, store the sensor where airflow is representative of the monitored space, perform periodic checks against a calibrated reference if regulatory accuracy is required, and replace the 4000 mAh battery before end-of-life to avoid gaps in data collection. Use the device’s local storage and retransmission features to preserve records when network connectivity is intermittent.

## Specifications

| Feature | Value |
|---|---|
| Sensor type | Temperature & humidity sensor |
| Purpose | Indoor/outdoor |
| Standard interfaces | NFC |
| Protection features | Waterproof |
| Temperature measuring range | -30 - 70 |
| Humidity measuring range | 0 - 100 |
| Battery life (max) | 5 year(s) |

### Features

| Feature | Value |
|---|---|
| Type | Freestanding |
| International Protection (IP) code | IP67 |

### Battery

| Feature | Value |
|---|---|
| Battery capacity | 4000 mAh |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 27 mm |
| Width | 88 mm |
| Depth | 87 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | -30 - 70 |

## FAQ

### How much does the Milesight EM300TH915M temperature & humidity sensor cost, and is it available for purchase?

The price is 79.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 10.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Milesight EM300TH915M temperature & humidity sensor be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Milesight products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Milesight service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: type, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/10457263/62170683_large.webp