Industrial-Grade designed Environmental Monitor.Multiple types of external probes available (Temperature/Humidity/CO2/Soil moisture/Extreme Temperature).Larger capacity lithium battery and integrate external antenna.Larger capacity lithium battery and i-WiFi/Enternet connection (4G connection for GS1-AL4G1RS).WiFi/Enternet connection (4G connectionCost-Effective choice.4.4-inch high-quality LCD screen display.WiFi/4G connection. (4G for WS1 Pro WiFi and SIM version only).WiFi/4G connection. (4G for WS1 Pro WiFiMulitipath external probe extension available (Temperature/Humidity/Soil moisture/Extreme Temperature).Mulitipath external probe extension
