# Ultrasonic Level Sensor Milesight EM400-UDL 0.25–5 m LoRaWAN IP67 for Tanks, Silos, Rivers with Accelerometer and Temperature Sensor

**URL:** https://aio.lv/en/product--milesight-em400-udl-868m--11863479
**Data updated:** 2026-03-09 17:40 (EET)
**Category:** Smart Sensors
**Manufacturer:** Milesight
**Manufacturer code:** EM400-UDL-868M
**EAN:** 6974225035250
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 354.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 292.97 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--milesight-em400-udl-868m--11863479

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Milesight EM400-UDL is an ultrasonic LoRaWAN level and distance sensor designed for continuous measurement from 0.25 to 5 m. Housed in an IP67 enclosure, it suits tanks, silos, rivers and channels. Built-in accelerometer and temperature sensor support diagnostics and environmental compensation. The device provides wireless long-range connectivity for remote monitoring and level control applications.

## Long description

Milesight EM400-UDL is an ultrasonic LoRaWAN level and distance sensor that measures continuous distance from 0.25 to 5 m. The device is housed in an IP67-rated enclosure for protection against dust and temporary immersion, and is intended for remote monitoring of liquid or bulk material levels in tanks, silos, open channels and rivers. Integrated accelerometer and temperature sensor enable device diagnostics and environmental compensation to maintain measurement reliability in changing conditions. Wireless LoRaWAN connectivity provides long-range, low-power transmission suitable for battery-powered installations and distributed monitoring networks.
Advantages
The sensor combines ultrasonic ranging with LoRaWAN communication to offer non-contact level measurement and remote data transmission without wiring. Its IP67 housing and robust mechanical design provide suitability for outdoor and industrial environments. Built-in accelerometer allows detection of impacts or mounting issues, while the temperature sensor enables automatic compensation for temperature-related measurement deviations. Low power consumption and long-range wireless connectivity reduce installation complexity and ongoing maintenance needs.
Suitable for
Monitoring liquid levels in tanks, reservoirs and containers
Measuring bulk material or grain levels in silos
Water level observation in rivers, channels and open basins
Remote telemetry and telemetry networks for environmental and industrial sites
Key specifications
Measurement range: 0.25–5 m (ultrasonic)
Sensing principle: non-contact ultrasonic distance measurement
Communication: LoRaWAN (long-range, low-power wireless)
Ingress protection: IP67 enclosure
Onboard sensors: accelerometer for diagnostics, temperature sensor for compensation
Power: battery-powered operation with low power consumption for extended field deployment
Typical applications: tanks, silos, rivers, channels, outdoor monitoring
How to use
Install the sensor at a fixed mounting point with a clear acoustic path to the measured surface, ensuring the transducer faces the target area and is free from obstructions. Configure LoRaWAN settings and device parameters using the appropriate network server or configuration tool to match gateway and application requirements. Use temperature compensation settings where available to improve accuracy across ambient temperature changes. Periodically check the accelerometer logs for signs of impact or displacement and inspect the enclosure seals to preserve IP67 protection.
Usage recommendations
Mount the sensor where the ultrasonic beam has unobstructed line of sight to the medium surface and avoid installation near turbulence, splashing or heavy dust generation. Allow sufficient dead band below the sensor to account for surface variations and foam. For reliable long-term operation, verify LoRaWAN network coverage at the installation point and plan for periodic inspection of seals and battery status.

## FAQ

### How much does the Ultrasonic Level Sensor Milesight EM400-UDL cost, and is it available for purchase?

The price is 354.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 23.07.2026 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### 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

## Image

https://aio.lv/img/cache/product/11863479/67262044_large.webp