DRAGINO · Sensor · LoRa · LoRaWAN pH Sensor with Solar · SPH01-LS-EU868

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 analyse 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 electrode made of pure metal. It can determine the pH value of the soil with high accuracy and stable value. The SPH01-LS probe can be buried in the soil for a long time.

The LoRa radio technology used in the SPH01-LS enables the device to transmit data and achieve extremely long ranges at low data rates. It offers spread spectrum communication with extremely long range and high noise immunity with minimal power consumption.

The SPH01-LS supports BLE configuration and wireless OTA updates, making it easier for the user to use.

The SPH01-LS is powered by an 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 switching on.

Features: 

LoRaWAN 1.0.3 Class A
Bänder: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
Ultra-low power consumption
Monitoring of the soil pH value with temperature compensation
. Monitoring of the soil temperature
Monitoring of the battery level
Support for pH calibration by the end user
Supports Bluetooth v5.1 and LoRaWAN remote configuration
Supports wireless OTA update of the firmware
Waterproof IP66 housing
IP68 protection for the sensor controller
AT commands for changing parameters
Downlink for changing the configuration
Solar panel + 3000mAh Li-on battery (SPH01-LS)

Applications: 

Intelligent agriculture 

Technical data:

Supply voltage: Built-in battery, 2.5v ~ 3.6v
Operating temperature: -40 ~ 85°C

pH value of the soil:

• 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 metres

Bottom temperature:

• Range -40?~85?
• Resolution: 0.1?
• Measurement accuracy: <±0.5?(-10?~40?),<±0.8? (others)
• IP68 protection
• Length: 3.5 metres

LoRa Spec:

• Frequency range, band 1 (HF): 862 ~ 1020 Mhz
• Max. +22 dBm constant RF output vs.
• RX sensitivity: up to -139 dBm.
• Excellent blocking immunity

Power consumption:

• Sleep mode: 5uA @ 3.3v
• LoRa transmit mode: 125mA @ 20dBm, 82mA @ 14dBm