Pulse counter EM300-DI

digitalelectronicindustrial

Product Overview
The EM300-DI LoRaWAN® Pulse Counter converts pulse-output signals from passive meters (water, gas, electricity and similar pulse meters) into wireless consumption and event data via LoRaWAN®. It supports dry contact, reed switch and open-collector pulse types, includes temperature and humidity sensing, local buffered storage and NFC provisioning for rapid on-site setup. The device is optimised for remote metering in smart irrigation, industrial water monitoring, building metering and utility retrofits.

Key Features

• LoRaWAN® long-range wireless communication with ultra-low power consumption for wide-area deployments
• High pulse-count accuracy with automatic filtering of interference pulses < 250 µs and user-configurable filtering
• Integrated temperature and humidity sensors for environmental monitoring
• Rugged IP67 enclosure suitable for outdoor and harsh environments
• Local tamper-resistant storage (up to 1,000 records) with retransmission and retrievability for traceability
• Battery powered: single 4000 mAh ER18505 (dual 8000 mAh optional) for multi-year operation
• NFC-based configuration for fast in-field provisioning

Advanced Functions

• Milesight D2D (device-to-device) support for local node interaction to reduce gateway dependency and lower latency
• Configurable alarms: leakage/continuous-flow, abnormal temperature thresholds and other alerts
• Flexible counter management: stop, refresh, clear and accumulated counting; remote configuration via downlink

Applications

• Smart irrigation and agriculture: zone-based water usage monitoring with environmental sensing
• Industrial water monitoring and leakage detection
• Municipal and utility meter retrofit for wireless remote reading
• Smart buildings and facilities: tenant billing, ESG reporting and tamper-evident consumption records

Device-to-Platform Integration
The EM300-DI is compatible with standard LoRaWAN® gateways and network servers. It integrates with Milesight device-management platforms and supports open APIs and webhooks for system integration, bulk deployment, OTA updates and centralized device/firmware management.

Technical specifications

• Wireless Transmission — Technology: LoRaWAN®, Milesight D2D; Antenna: internal; Frequency bands: CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4; Tx Power: 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz); Sensitivity: -137 dBm @300 bps; Mode: OTAA / ABP Class A
• Measurement / GPIO — Port: 1 × GPIO interface (dry contact); Work modes: pulse counter, digital input; Input frequency: ≤ 2000 Hz; Minimum pulse width filtered: 250 µs; Cable length: 1 m (customizable); Connector: 3.5 mm; Applicable meters: reed switch or passive pulse-output meters
• Temperature sensor — Range: -30 °C to +70 °C; Accuracy: 0 °C to +70 °C ±0.3 °C, -30 °C to 0 °C ±0.6 °C; Resolution: 0.1 °C
• Humidity sensor — Range: 0 % RH to 100 % RH; Accuracy: 10 %–90 % RH ±3 % RH, <10 % / >90 % RH ±5 % RH; Resolution: 0.5 % RH
• Storage and data — Local storage up to 1,000 entries; features: data retransmission, retrievability and tamper-resistant records
• Indicators & Controls — LED: 1 internal indicator; Button: 1 internal power/reset button; power/NFC provisioning controls
• Configuration — NFC via mobile app and downlink configuration for fast provisioning
• Advanced features — Milesight D2D protocol, configurable temperature/flow alarms, stop/refresh/clear counter commands
• Power & Battery — Power: 1 × 4000 mAh ER18505 Li battery (dual 8000 mAh optional); Typical battery life: up to 5 years (10 min reporting @25 °C), up to 10 years with dual batteries (application dependent)
• Physical — Operating temperature: -30 °C to +70 °C; Relative humidity: ≤ 95 % non-condensing; Material: ABS+PC (flame retardant), white; Weight: 114.2 g (with 1 battery and wire); Ingress protection: IP67; Dimensions: 105.6 × 85.2 × 27 mm; Installation: wall screw, 3M tape or cable-tie
• Regulatory & environmental — Approvals: CE, FCC, ISED, RCM, TELEC; Environmental: RoHS