The Dragino SPH01-LB/LS is a LoRaWAN Soil pH Sensor for IoT of Agriculture. It is designed to measure the soil PH and soil temperature, so to send to the platform to analyze the soil acid or alkali level. The probe is IP68 waterproof.

SPH01-LB/LS probe is made by Solid AgCl reference electrode and Pure metal pH sensitive electrode. It can detect soil's pH with high accuracy and stable value. The SPH01-LB/LS probe can be buried into soil for long time use.

The LoRa wireless technology used in SPH01-LB/LS allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.

SPH01-LB/LS supports BLE configure and wireless OTA update which make user easy to use.

SPH01-LB/LS is powered by 8500mAh Li-SOCI2 battery or solar powered + li-on battery it is designed for long term use up to 5 years.

Each SPH01-LB/LS is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.

Features: 

• LoRaWAN 1.0.3 Class A
• Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
• Ultra-low power consumption
• Monitor soil pH with temperature compensation.
• Monitor soil temperature
• Monitor Battery Level
• Support pH calibration by end user
• Support Bluetooth v5.1 and LoRaWAN remote configure
• Support wireless OTA update firmware
• IP66 Waterproof Enclosure
• IP68 rate for the Sensor Probe
• AT Commands to change parameters
• Downlink to change configure
• 8500mAh Li/SOCl2 Battery (SPH01-LB) 
• Solar panel + 3000mAh Li-on battery (SPH01-LS)

Applications: 

• Smart Agriculture 

Specification:

Common DC Characteristics:

• Supply Voltage: Built-in Battery , 2.5v ~ 3.6v
• Operating Temperature: -40 ~ 85°C

Soil pH:

• Range: 3 ~ 10 pH 
• Resolution: 0.01 pH
• Accuracy: ±2% under (0~50 ℃, Accuracy will poor under 0 due to frozen)
• Temperature Compensation Range: 0 ~ 50℃
• IP68 Protection
• Length: 3.5 meters

Soil Temperature:

• Range -40℃～85℃
• Resolution: 0.1℃
• Accuracy: <±0.5℃(-10℃～40℃)，<±0.8℃ (others)
• IP68 Protection
• Length: 3.5 meters

LoRa Spec:

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

Battery:

• Li/SOCI2 un-chargeable battery
• Capacity: 8500mAh
• Self-Discharge: <1% / Year @ 25°C
• Max continuously current: 130mA
• Max boost current: 2A, 1 second

Power Consumption:

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

DOCUMENTS:

• DataSheet, Document Base
  
• User Manual -- Online Latest
• Shared Folder for all Dragino Products

Package Includes:

• SPH01-LB or SPH01-LS LoRaWAN Soil pH Sensor x 1

Dimension and weight:

• Device Size: 195 * 125 * 55 mm
• Device Weight: 420 g