8-bit AVR MCU with USB, 32 KB flash, 16 MHz
| Core | AVR, 16 MHz |
| Flash / RAM | 32 KB / 2.5 KB |
| Supply | 2.7–5.5 V |
32-bit MCU, Arm Cortex-M3, 72 MHz, 64 KB flash
| Core | Cortex-M3, 72 MHz |
| Flash / RAM | 64 KB / 20 KB |
| Supply | 2.0–3.6 V |
8-bit AVR MCU, 32 KB flash, 20 MHz
| Core | AVR, 20 MHz |
| Flash / RAM | 32 KB / 2 KB |
| Supply | 1.8–5.5 V |
8-bit AVR MCU, 8 KB flash, 20 MHz
| Core | AVR, 20 MHz |
| Flash / RAM | 8 KB / 512 B |
| Supply | 2.7–5.5 V |
8-bit AVR MCU, 32 KB flash, 20 MHz
| Core | AVR, 20 MHz |
| Flash / RAM | 32 KB / 2 KB |
| Supply | 1.8–5.5 V |
32-bit MCU, Arm Cortex-M3, 72 MHz, 64 KB flash
| Core | Cortex-M3, 72 MHz |
| Flash / RAM | 64 KB / 20 KB |
| Supply | 2.0–3.6 V |
General-purpose relay, DPDT, 5 A, 24 V DC coil, LED indicator
| Contacts | DPDT, 5 A |
| Coil | 24 V DC |
| Mount | Socket |
Solid-state relay, 2 A, 100–240 V AC, 5 V DC input
| Contacts | SPST-NO, 2 A, 240 V AC |
| Coil | 5 V DC |
| Mount | PCB |
Single-board computer, 4× Cortex-A72, 4 GB RAM, Gigabit Ethernet
| Radio | Wi-Fi 5 dual-band, BT 5.0 |
| Flash | microSD |
| MCU | BCM2711, 4× Cortex-A72, 1.8 GHz |
Hall-effect current sensor, ±20 A, analog output
| Supply | 5 V |
| Interface | Analog, 100 mV/A |
| Range | ±20 A |
