component
model
MCU
unknown
t/RH Sensor
Sensirion SHTC3
CO2 Sensor
Winsen MH-Z19E
(or D)
Battery
GMCELL 18650-2400mAh 3.7v
Wi-Fi + Bt
Tuya CB3S
Mainboard
PTH9C51 V3.0
CB3S Wi-FiĀ
SHTC3 t/RH sensor and buttons board (PTH_9BUTTONV4.0)
Sensirion SHTC3