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Power dissipation:1w Power supply: 1.1-3.6V DC – typically 3.3V DC Resolution: 16bit Temperature measuring range: -40-125 ° C Temperature measurement resolution: 0.01 ° C Temperature measurement accuracy: ± 0.2 ° C Humidity measurement range: 0-100% RH Humidity measurement resolution: 0.01 RH Humidity measurement accuracy: ± 1.8% RH
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RP2040 microcontroller with 2MB of flash memory On-board single-band 2.4GHz wireless interfaces (802.11n) Micro USB B port for power and data (and for reprogramming the flash) 40 pin 21mmx51mm ‘DIP’ style 1mm thick PCB Exposes 26 multi-function 3.3V general purpose I/O (GPIO) 23 GPIO are digital-only, with three also being ADC capable