Dragino WeightScale-LB/LS/LB2 – LoRaWAN IoT Weight Sensor

The Dragino WeightScale-LB/LS is a LoRaWAN IoT Weight Sensor for Internet of Things solution. It is designed to precisely measure weight and then upload the data to an IoT server via the LoRaWAN wireless protocol.

The WeightScale-LB/LS provides a complete, all-in-one hardware solution. It integrates a high-precision weighing platform with a LoRaWAN transmission node into a single, ready-to-use unit. Customers receive a fully assembled and tested device, eliminating the need for external hardware purchases and complex integration work.

The WeightScale-LB/LS is available in two standard configurations to meet common application requirements: a 30cm x 40cm platform with 150KG capacity and a 40cm x 50cm platform with 300KG capacity. These standard versions allow customers to easily evaluate the solution for their specific use cases.

The LoRaWAN wireless technology used in the Weight Scale-LB enables data transmission over extremely long ranges at low data rates, providing ultra-long-range spread spectrum communication and high interference immunity while minimizing current consumption.

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

The WeightScale-LB/LS is powered by an 8500mAh Li-SOCI2 battery or solar powered + Li-ion battery, designed for long-term use up to 5 years depending on configuration. The WeightScale-LB2 is powered by a 19000mAh battery.

Each WeightScale-LB/LS is pre-loaded with a unique set of keys for LoRaWAN registration. Simply register these keys to your local LoRaWAN server, and the device will automatically connect after power-on.

• LoRaWAN 1.0.3 Class A
• Ultra-low power consumption
• Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
• Support Bluetooth v5.1 and LoRaWAN remote configure
• Support wireless OTA update firmware
• Uplink on periodically
• Downlink to change configure
• 8500mAh Li-SOCI2 Battery (Weight Scale-LB)
• Solar panel + 3000mAh Li-ion battery (Weight Scale-LS)
• 19000mAh Li-SOCI2 Battery (Weight Scale-LB2)
• Standard Evaluation Models: 30cm x 40cm, 150KG and 40cm x 50cm, 300KG versions for easy solution assessment
• Customizable Platform: Support for custom shape, size, capacity, and multi-sensor configurations for specialized applications

Common DC Characteristics:

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

Temperature Sensor:

• Range: -40 to + 80°C
• Accuracy: ±0.2 @ 0-90 °C
• Resolution: 0.1°C
• Long Term Shift: <0.03 °C/yr

Humidity Sensor:

• Range: 0 ~ 99.9% RH
• Accuracy: ± 2%RH ( 0 ~ 100%RH)
• Resolution: 0.01% RH
• Long Term Shift: <0.25 %RH/yr

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, or 19000mAh for LB2
• 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