Milesight IoT controller UC500 Series (NB-IoT)

The Milesight UC50x Series (UC501 / UC502) is a rugged, multi-interface cellular controller designed for reliable data acquisition from a wide range of sensors and industrial equipment. Equipped with multiple I/O options - including analog input, digital input/output, RS232/RS485, and SDI-12 - the UC50x series serves as a powerful bridge between field devices and the cloud, greatly simplifying deployment and connectivity for NB-IoT and Cat-M networks.

With NFC-based configuration, the UC50x can be set up quickly without opening the enclosure, reducing installation time and maintenance effort. For outdoor and remote applications, the controller offers flexible power choices including built-in solar panel, high-capacity battery options, or DC input, ensuring long-term autonomous operation.

The UC50x is built to withstand harsh environments with its IP68-rated waterproof enclosure and durable M12 connectors, providing exceptional protection against dust, water, and challenging weather conditions. With support for multiple IoT protocols, local data storage, retransmission functions, and intelligent alarms, the UC50x series delivers reliable and continuous monitoring for mission-critical applications.

Features

Multi-Interface & Sensor Flexibility

• Connects directly to multiple wired sensors through GPIO, Analog Input, RS232, RS485, and SDI-12
• Supports digital input, digital output, and pulse counting
• Two analog input channels with switchable 4 - 20 mA / 0 -10 V modes
• One SDI-12 port compliant with SDI-12 V1.4 standard
• Ideal for integrating environmental sensors, industrial meters, and remote monitoring devices

Built for Harsh Outdoor Environments

• IP68 waterproof enclosure (survives 1 m underwater for 7 days)
• Industrial-grade M12 connectors for reliable field wiring
• Suitable for outdoor, industrial, agricultural, and remote field deployments

Smart & Flexible Power Options

• Optional solar-powered version with built-in 6 V / 1.7 W solar panel
• High-capacity battery choices:
  • 2 × 2550 mAh rechargeables (ICR18650)
  • 3 × 9000 mAh replaceable ER26500 Li-SOCl₂ batteries
• DC 5-24 V external power input via M12
• Switchable power outputs: 3.3 V or 5/9/12 V to drive external sensors
• Supports timed power supply for sensors to reduce energy consumption

Easy & Fast Configuration

• NFC wireless setup via mobile app-no cables needed
• Internal Power/Reset button
• Supports configuration via NFC, downlink commands, or internal USB-C console

Reliable Cellular Data Transmission

• Supports NB-IoT and Cat-M1 global bands
• Multiple protocols: TCP, UDP, MQTT, AWS IoT
• Local storage for up to 10,000 data records
• Automatic data retransmission to prevent data loss
• Built-in threshold alarms, change alarms, and cumulative reporting for power saving

High Compatibility & Platform Integration

• Works smoothly with major IoT cloud platforms
• Supports transparent data pass-through via RS232/RS485
• Fully compatible with Modbus RTU and custom sensor protocols

Technical Documents

• Datasheet
• User Guide

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