| Parametrics | ATM90E26 GTEM | ATM90E32 IPEM | ATM90E36 IPEM | ATM90E32 IPEC |
|---|---|---|---|---|
| Active Energy Accy (%) | 0.1 | 0.1 | 0.1 | 0.1 |
| ADC Channels | 3 | 6 | 7 | 6 |
| ADC Resolution (bits) | 16 | 16 | 16 | 16 |
| Automated Controlling of Relays | - | - | - | Yes |
| Automated Controlling of Smart Battery Charging | - | - | - | Yes |
| Automated Controlling of Solar Power Diversion | - | - | - | Yes |
| Board PSU Operating Voltage Range (AC RMS) | 5 to 20 V | 5 to 20 V | 5 to 20 V | 5 to 20 V |
| Crystal Frequency (ATM) | 8.192 MHz | 16.384 MHz | 16.384 MHz | 16.384 MHz |
| Current Monitoring Channels | 1 | 3 | 4 | 3 |
| Current Range (RMS) | 0 to 65.535 A | 0 to 65.535 A | 0 to 65.535 A | 0 to 65.535 A |
| DAC Output (CT Power Linked) | - | - | - | Yes |
| Data Dumping over DMA (SPI-Master) | - | - | Yes | - |
| Direct Memory Access (DMA) | - | - | Yes | - |
| Discrete Fourier Transform (DFT) Function | - | - | Yes | - |
| Dynamic Range | 5000:1 | 6000:1 | 6000:1 | 6000:1 |
| Energy Metering Analog Front-End Channels | 3 | 6 | 7 | 6 |
| Enhanced Poly-Phase High-Performance | - | Yes | Yes | Yes |
| ESP32 ATM90 Default Interface | SPI | SPI | SPI | SPI |
| ESP32 BT Frequency Range | 2402 MHz to 2480 MHz | 2402 MHz to 2480 MHz | 2402 MHz to 2480 MHz | 2402 MHz to 2480 MHz |
| ESP32 External UART2 Interface | - | Yes | Yes | Yes |
| ESP32 WLAN Frequency Range | 2412 MHz to 2462 MHz | 2412 MHz to 2462 MHz | 2412 MHz to 2462 MHz | 2412 MHz to 2462 MHz |
| Expansion Port (JST 6W SH) | - | - | - | Yes |
| External UART Port for 3G, Telemetry, Etc. | - | Yes | Yes | Yes |
| Frequency Detection Range | 45 to 65 Hz | 45 to 65 Hz | 45 to 65 Hz | 45 to 65 Hz |
| Full Three Phase Power Monitoring (3P3W, Y or Δ) | - | Yes | Yes | Yes |
| Increased Functionality (ATM90E36) | - | - | Yes | - |
| LED/GPO Active | Yes | Yes | Yes | Yes |
| LED/GPO Harmonic | - | Yes | Yes | Yes |
| LED/GPO ReActive | Yes | Yes | Yes | Yes |
| LED/GPO Fundamental | - | Yes | Yes | Yes |
| Low Temperature Drift | - | Yes | Yes | Yes |
| Mean Power Monitoring | - | Yes | Yes | Yes |
| Meter Type | Single Phase | Three Phase (3P3W, Y or Δ) | Three Phase (3P3W, Y or Δ) | Three Phase (3P3W, Y or Δ) |
| MPWM / MPPT Output (CT Power Linked) | - | - | - | Yes |
| Operating Ambient Temperature Range | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C |
| Operating Ambient Temperature Range 24C64 | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C |
| Operating Ambient Temperature Range ESP32 | –40°C to +125°C | –40°C to +125°C | –40°C to +125°C | –40°C to +125°C |
| Operating Ambient Temperature Range SMPS | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C |
| Operating Ambient Temperature Range UART | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C |
| Operating Voltage - Board AC RMS | 8 to 12V | 8 to 12V | 8 to 12V | 8 to 12V |
| Parameter Diagnosis Function | - | - | Yes | - |
| Power Factor Range | -1.00 to +1.00 | -1.00 to +1.00 | -1.00 to +1.00 | -1.00 to +1.00 |
| PWM Output (CT Power Linked) | - | - | - | Yes |
| Reactive Energy Accy (%) | 0.2 | 0.2 | 0.2 | 0.2 |
| Sag Detection | Yes | Yes | Yes | Yes |
| Single Phase Power Energy Monitoring | Yes | Yes | Yes | Yes |
| Single Point Calibration | Yes | N/A | N/A | N/A |
| Split Phase Monitoring | - | Yes | Yes | Yes |
| Stand-Alone Operation, and/or IoT MQTT Integrated | Yes | Yes | Yes | Yes |
| Temp Coefficient Type (ppm/degC) | 15 | 6 | 6 | 6 |
| Three x Single Phase Power Monitoring | - | Yes | Yes | Yes |
| Total Harmonic Distortion (THD) Function Current | - | - | Yes | - |
| Total Harmonic Distortion (THD) Function Voltage | - | - | Yes | - |
| UART Port (Flashing) | Yes | - | - | - |
| USB Wemos D1 Compatible (Flashing Debug) | - | Yes | Yes | Yes |
| Voltage Monitoring Channels | 1 Line | 3 Line | 3 Line + 1 (Neutral) | 3 Line |
| Voltage Range (RMS) | 0 to 655.35 V | 0 to 655.35 V | 0 to 655.35 V | 0 to 655.35 V |
| Voltage Sensor Inputs ATM Maximum (AC RMS) | 20 V | 20 V | 20 V | 20 V |