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Blynk Platform Overview
Getting Started with Blynk
Core Features
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Build and publish branded iOS and Android apps.
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Create dashboards and control devices in real time.
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Build no-code apps, provision devices, push OTA updates and use Blynk as network co-processor.
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Featured Hardware
From the Blog
Blynk Data Converters: Integrate Any IoT Device Without Firmware Changes
Agriculture
Smart farming and irrigation control.
Industrial & Manufacturing
Equipment health and process automation.
High-End Consumer Goods
Branded IoT apps for connected devices.
Logistics
Fleet tracking and asset visibility.
Energy & HVAC
Smart metering and air monitoring.
Smart Cities
Environmental sensing and public infrastructure.
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Energy, water, and space optimization.
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Seamless integration of smart devices for enhanced living.
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featured hardware

Milesight Ultrasonic Distance Sensor EM400-UDL Cat M

With IP67-rated enclosure for professional and demanding applications
Where to Buy
Blynk logo
Kit

About

Equipped with prolonged battery life and robust IP67 rated enclosure, EM400-UDL is the perfect fit for professional and demanding applications.

  • Great Flexibility with Multiple Versions
  • Non-Contact Distance Measurement
  • Value-added Temperature and Tilt Monitoring
  • Various Professional Applications
  • Long-Lasting Battery Life of up to 10 Years
  • Rugged and Reliable IP67 Rated Enclosure
  • Positioning Function Enabled by GNSS Modules (NB-loT Version)

‍

Details

Core Components:
No items found.
Accessories:
CPU:
Channels:
Memory:
Connectivity:
LoRaWAN
Programming Language:
Supported Blynk Tech:
No items found.
Applications:
Smart Farming
Industrial IoT
Smart Factory
Smart Buildings
Asset Tracking
Cold Chain Logistics
Construction
Healthcare
Smart Cities
Transportation
Smart Irrigation Management

Measurement:

  • Distance Range:
    • C050: 25 ~ 500 cm
    • C100: 25 ~ 1000 cm
  • Accuracy: ± (1+0.3%*S) cm, S=distance (-15°C ~ 60°C)
  • Resolution: 1 mm
  • Device Position Status: Normal/Tilt
  • Temperature Range: -40 ~ 125°C
  • Temperature Resolution: 0.1°C

Wireless Transmission:

  • Frequency:CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1
  • Tx Power:
    • 16 dBm (868 MHz)
    • 20 dBm (915 MHz)
    • 19 dBm (470 MHz)
  • Sensitivity: -137 dBm @300bps
  • Mode: OTAA/ABP Class A
  • Cellular Band:
    • Cat M1: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85
    • Cat NB2: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B28/B66/B71/B85
  • SIM Slot: 1 (Micro SIM-3FF)
  • Application Mode: TCP/UDP/MQTT/AWS/Milesight IoT Cloud

Operation:

  • Power On & Off: NFC, Power Button (Internal)
  • Configuration: Mobile App (via NFC)

Physical Characteristics:

  • Power Supply: 2 x 9000 mAh ER26500 Li-SOCL2 Batteries
  • Battery Life: Over 10 years (10-min Interval, 25°C)
  • Operating Temperature: -30°C ~ 70°C
  • Relative Humidity: ≤95% (non-condensing)
  • Ingress Protection: IP67
  • Dimension: 118 × 65 × 80 mm
  • Material: ABS + PC (Flame Retardant)
  • Color: Black gray (C050/C100), Gray (W050/W100/S050)
  • Installation: On the Flat Surfaces with Screws
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Use a ready-made blueprint project, or a firmware example to build your own functionality.
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Firmware Example
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Mobile Apps
Build branded iOS and Android IoT apps in days — feature-rich and brand-ready.
Web Console
Control fleets and users with one secure IoT dashboard.
CLOUD
Run on a managed IoT cloud with enterprise security, 24/7 monitoring, and SLA uptime.
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Connect any device via Wi-Fi, Cellular, LoRaWAN, or Satellite — with ready AWS/Azure integrations.
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