["The Dragino SPH01-LS is a LoRaWAN soil pH sensor for IoT in agriculture. It is designed to measure soil pH and soil temperature and send it to the platform to analyze the acidity or alkalinity of the soil. The probe is IP68 waterproof. The SPH01-LS probe consists of a solid AgCl reference electrode and a pH-sensitive pure metal electrode. It can determine the pH value of the soil with high accuracy and stable value. The SPH01-LS probe can be buried in the ground for a long time. The LoRa wireless technology used in the SPH01-LS allows the device to send data and achieve extremely long ranges at low data rates. It offers spread spectrum communication with extremely long range and high interference immunity with minimal power consumption. The SPH01-LS supports BLE configuration and over-the-air OTA updates, making it easier for users to use. The SPH01-LS is powered by a 8500mAh Li-SOCI2 battery or a solar powered + Li-on battery and is designed for long-term use of up to 5 years. Each SPH01-LS is pre-loaded with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN servers and it will automatically connect after power on. LoRaWAN 1.0.3 Class A Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865 Ultra-low power consumption Soil pH monitoring with temperature compensation. Soil temperature monitoring Battery level monitoring End-user pH calibration support Supports Bluetooth v5.1 and LoRaWAN remote configuration Supports OTA wireless firmware update Waterproof IP66 housing IP68 protection for the sensor probe AT commands to change parameters Downlink to change configuration Solar panel + 3000mAh Li-on battery (SPH01-LS)", "Range: 3~10 pH", "Resolution: 0.01 pH", "Accuracy: ±2% below (0~50?, Accuracy will be poor below 0 due to frozen)", "Temperature compensation range: 0 ~ 50?", "IP68 protection", "Length: 3.5 meters"]