Energy Meters

Eastron SDM120CTM-40mA DIN Rail Energy Meter The SDM120CTM-40mA is a compact 1-module (18mm) single-phase multifunction DIN rail energy meter. It provides precise measurement of key electrical parameters including active energy (kWh), reactive energy, voltage, current, power, power factor, frequency, and more. Designed for use in residential, solar PV, industrial, and utility applications, the meter supports bi-directional energy monitoring, making it ideal for solar and other renewable energy systems. The device operates with 40mA current transformers (CTs) and is compatible with a wide range of external CTs for flexible installation. It features 2 pulse outputs and Modbus RS485 communication for easy remote monitoring and system integration. Key Features 1 DIN module width (18mm) 40mA CT-operated (external current transformer) Bi-directional measurement (import/export) Multi-parameter monitoring: kWh, W, V, A, PF, Hz, demand, etc. LCD display with backlight for clear readings 2 Pulse outputs for energy data logging RS485 Modbus RTU communication Wiring configuration: 1P2W (Single Phase, 2 Wire)

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Optimize and monitor your energy system with the SUN-SMART-CTO1 combined with the SUN-SMART-TXO1. Designed for precision, efficiency, and reliable communication, this smart energy monitoring kit is perfect for residential, commercial, and industrial applications.Key FeaturesSUN-SMART-CTO1 – Smart Energy Meter (CT) Model: L1/N (Single Phase) or L1/L2/L3/N (Three Phase) Operating Voltage: 85–300 V AC (L-N) Frequency: 50Hz (45–55Hz) / 60Hz (55–65Hz) Secondary Current: 50mA Self Consumption: ≤2 W AC Voltage Withstand: 4 kV / 1 min Accuracy: ±0.1 V, ±0.01 A, ±0.01 Hz, ±1 W Communication: LoRa / RS485, up to 200m barrier-free Display: LCD shows Voltage, Current, Active Power, Reactive Power, Frequency, Power Factor, and Energy Installation: DIN-Rail Mounting Dimensions: 53 x 96 x 64 mm | Weight: 0.15 kg Operating Temp: 0–60°C | Humidity: 0–75% | IP Rating: IP20 Warranty: 5 Years | Standards: IEC/EN61010-1 SUN-SMART-TXO1 – LoRa Transmission Module Input Voltage: DC 5V Communication: LoRa, up to 200m barrier-free Frequency Range: 863–870 MHz | Built-in Antenna Gain: 0.79 dBi @ 868 MHz Display: N/A (Transmitter only) Operating Temp: 0–60°C | Humidity: 0–100% | IP Rating: P20 (IP65 after installation) Dimensions: 137.8 x 31.3 x 31.3 mm | Weight: 45.8 g Warranty: 2 Years | Standards: IEC/EN 62368-1 Why Choose the SUN-SMART Kit? Complete Monitoring Solution: Works seamlessly as a set for accurate measurement and remote transmission of energy data. Easy Installation: DIN-rail mounting for the meter and compact design for the transmitter. Reliable Communication: LoRa provides long-distance wireless transmission without barriers. Wide Compatibility: Supports single and three-phase systems with high accuracy. Durable & Safe: Built to international standards with excellent protection and operational reliability.

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