WN1821_C Console with 4.9" LCD Display and Built-in CO₂ Detector

Features Indoor weather monitoring including carbon dioxide detection 4.9" LCD display & built-in Wi-Fi gateway A dedicated display center for Ecowitt ecosystem sensors (more detail on compatibility table); Measurement: CO2; Temperature & Humidity; Barometric; WN1821 has built-in Photoacoustic NDIR CO₂ Sensor for detecting CO₂ concentration, while WN1820 can work with WH45 Transmissive NDIR CO₂ detection, or WH46 Photoacoustic NDIR CO₂ to activate CO₂ function. Both of display has built-in temperature and humidity, and air pressure.   Display content:  Time&Week; Date or CO2 PPM Level, Backup Battery status ; Wi-Fi and RF signal status;  Indoor Temperature and Humidity, or WN34 or WN35 or WH51 ( up to 8 channels); Multi channel Temperature/Humidity sensors with Min&Max record. 8 * Soil moisture (WH51), 8 * leaf wetness (WN35), 8 * multi channels sensor (WN30/WH31/WN34S/WN34L/WN36) can be displayed on LCD seamlessly.  Cloud server content:  Data and graph record: Relati