The Dragino SPH01-NB is a NB-IoT 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-NB 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-NB probe can be buried into soil for long time use.

SPH01-NB supports different uplink methods including MQTT, MQTTs, UDP & TCP for different application requirement, and support uplinks to various IoT Servers.

SPH01-NB supports BLE configure and OTA update which make user easy to use.

SPH01-NB is powered by 8500mAh Li-SOCI2 battery, it is designed for long-term use up to several years.

SPH01-NB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.

Features:  

• NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
• Ultra-low power consumption
• Monitor soil pH with temperature compensation.
• Monitor soil temperature
• Support pH calibration by end user
• Multiply Sampling and one uplink
• Support Bluetooth v5.1 remote configure and update firmware
• Uplink on periodically
• Downlink to change configure
• 8500mAh Battery for long term use
• Nano SIM card slot for NB-IoT SIM 

Applications: 

• Smart Agriculture 

Specification:

Common DC Characteristics:

• Supply Voltage: built in 8500mAh Li-SOCI2 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

NB-IoT Spec: 

NB-IoT Module: BC660K-GL  

Support Bands:  

• B1 @H-FDD: 2100MHz
• B2 @H-FDD: 1900MHz
• B3 @H-FDD: 1800MHz
• B4 @H-FDD: 2100MHz
• B5 @H-FDD: 860MHz
• B8 @H-FDD: 900MHz
• B12 @H-FDD: 720MHz
• B13 @H-FDD: 740MHz
• B17 @H-FDD: 730MHz
• B18 @H-FDD: 870MHz
• B19 @H-FDD: 870MHz
• B20 @H-FDD: 790MHz
• B25 @H-FDD: 1900MHz
• B28 @H-FDD: 750MHz
• B66 @H-FDD: 2000MHz
• B70 @H-FDD: 2000MHz
• B85 @H-FDD: 700MHz 

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:  

• STOP Mode: 10uA @ 3.3v
• Max transmit power:   350mA@3.3v 

DOCUMENTS:

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

Package Includes: 

• SPH01-NB NB-IoT Soil pH Sensor x 1 

• External antenna x 1 

Dimension and weight:

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