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| Parameter | IoTik 32A | IoTik 32B | Arduino UNO R3 | Wemos D1 R1/R2 |
| Microcontroller | ESP32 (ESP-WROOM-32) | ATmega328P | ESP8266E (ESP 12-E) | |
| Processor bitness | 32 bits | 8 bits | 32 bits | |
| Number of CPU cores | 2 | 1 | 1 | |
| Clock rate | 80 ... 240 MHz | 16 MHz | 80 ... 160 MHz | |
| Built-in ROM | 448 Kb | No | No | |
| Built-in RAM | 520 Kb | 2 Kb | 160 Kb | |
| Built-in RAM in real time hours RTC FAST | 8 Kb | No | No | |
| Built-in RAM in real time hours RTC SLOW | 8 Kb | No | No | |
| One-time eFuse programmable memory | 1 Kb | 0.003 Kb | No | |
| Non-volatile Flash memory | 4 Mb | 32 Kb | 4 Mb | |
| Non-volatile EEPROM memory | Instead, 4 MB non-volatile memory is used | 1 Kb | No | |
| Additional coprocessor | Yes, ULP (ultra low power coprocessor) | No | No | |
| Wireless Wi-Fi interface | Yes, 802.11 b/g/n | No | Yes, 802.11 b/g/n | |
| Maximum data transfer rate | 150 Mbps | No | 72.2 Mbps | |
| Wi-Fi operating frequency range | 2.4 … 2.5 GHz | No | 2.4 … 2.5 GHz | |
| Wireless Bluetooth interface | Yes, v4.2 BR/EDR и BLE | No | No | |
| Maximum data transfer rate | 4 Mbps | No | No | |
| Audio codecs support | Yes, CVSD, SBC | No | No | |
| Built-in temperature sensor | Yes | Yes | Yes | |
| Built-in Hall Sensor | Yes | No | No | |
| Number of I/O port outputs | 14 + 4 with ADC + 2 ADC only | 14 + 6 with ADC | 11 | |
| Analog-to-digital converte | Yes, SAR | Yes, SAR | Yes, SAR | |
| ADC bitness | 12 bits | 10 bits | 10 bits | |
| Number of ADC inputs | 6 | 6 | 1 | |
| Digital-to-analog converter | Yes | No | No | |
| DAC bitness | 8 bits | No | No | |
| Number of DAC outputs | 2 | No | No | |
| UART Interface | Yes, 3 шт. (на плате обозначено 2, могут использоваться любые порты) | Yes, 1 pc. | Yes, 2 pcs. (only one accessible) | |
| I2C Interface | Yes, 2 pcs. (1 is labeled on the board, any ports can be used)) | Yes, 1 pc. | Yes, software, any ports can be used | |
| SPI Interface | Yes, 4 pcs. (1 is labeled on the board, any ports can be used) | Yes, 1 шт. | Yes, 2 pcs. (only one accessible) | |
| I2S Interface | Yes, 2 pcs. (not labeled on the board, any ports can be used) | No | Yes, 1 pc. | |
| PWM controller | Yes (any ports can be used) | Yes, 6 ports | Yes, 4 ports | |
| Possibility to connect a memory card | No, external adapter only | Yes, MicroSD, 4-bit mode, up to 32 GB | No, external adapter only | No, external adapter only |
| Infrared signal receiver | No | Yes, 38 kHz | No | No |
| Powered by USB | Yes, 5 V | Yes, 5 V | Yes, 5 V | |
| USB connector type | Type B | Type B | Micro USB | |
| Powered by an external source | Yes, 8 … 30 V | Yes, 6 … 20 V | Yes, 9 … 24 V | |
| Possibility to turn the power on/off | No | Yes, with the help of the button you can turn an external power supply 8 ... 30 V on/off, the power from USB is not affected | No | No |
| Maximum current consumption from USB | 1 A | No data | No data | |
| Maximum load current of 5V voltage converter from an external source | 5 A | 1 A | No data | |
| Maximum load current of 3.3 V voltage converter | 1 A | 0.15 A | 0.5 A | |
| Protection against incorrect polarity when powered from an external source | Yes | Yes | Yes | |
| Short circuit protection | Yes | Yes, but does not work | No data | |
| Operating temperature range | -40 … +85 ºC | No data | No data | |
| Controller board dimensions | 68.6 x 53.3 x 15.8 mm | 68.6 x 53.3 mm | 68.6 x 53.4 mm | |
| Mounting hole diameter | 3.2 mm | 3.2 mm | 3.2 mm | |
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