4 layers19.8 × 50.9 mm

Zigbee air quality monitor
nobodyguy/zigbee_air_quality_monitor_hardware
Opensource HA compatible air quality monitor with CO2, temperature and humidity measurements
35 parts2Apache-2.0
Boards in 1 GitHub repository, designed in KiCad, that use the SMD0603-035 by TECHFUSE (-40℃~+85℃ 1.4Ω 100ms 200mΩ 350mA 40A 500mW 6V 750mA 0603 Resettable Fuses ROHS). See how each wires it, with its parts, size, README and files; the SMD0603-035’s symbol, footprint and pinout are on its own page.

nobodyguy/zigbee_air_quality_monitor_hardware
Opensource HA compatible air quality monitor with CO2, temperature and humidity measurements