Adot4

Analog Datalogger

 

Adot4

Feature and Application

Introduction

Adot4 is an analog datalogger with both LTE-M and NB-IoT wireless transmission technologies, which is designed to meet the needs of geotechnical engineering applications. It is a reliable choice for automated safety monitoring in civil engineering, water conservancy, construction and other fields. This datalogger can be used to measure analog instrument signals such as voltage, current, resistance and various thermometers. It has a sturdy waterproof outer case and low power consumption design to ensure accurate and continuous data collection even in harsh environments.
The Adot4 analog datalogger is equipped with a built-in 32GB Micro SD card, providing sufficient storage capacity for over one million data records, making data analysis during long-term monitoring more comprehensive and ensuring that no critical data is missed. This datalogger is renowned for its excellent cost performance and reliability and has undergone rigorous testing and quality verification to deliver accurate and consistent measurement.

Applications

Key Features

Low-Power Consumption

MQTT Protocol

Powered by four 18650 Li-ion batteries, Adot4 operates up to 6 months (RSSI < 15) to 12 months (RSSI ≥ 15) with hourly measurements.

Supports MQTT for versatile data acquisition and integration.

LTE-M and NB-IoT wireless transmission

Simple Operation

Real-time monitoring enabled via LTE-M / NB-IoT and dot cloud integration.

Data uploads to the dot cloud via simple Micro SD card setup.

Best Suited

Construction Site and Civil Engineering Project

Water Conservancy Project

Bridge Engineering

Slope Safety

Web Monitoring Tool and Software

The “dot Cloud” adopts a web-based architecture and primarily provides the NB-IoT datalogger developed by Sanlien Technology.

Web Monitoring Tool and Software

dot Cloud

The “dot Cloud” adopts a web-based architecture and primarily provides the NB-IoT datalogger developed by Sanlien Technology.

Product Specification

Measurement Type

Analog sensor

ADC

24-bit resolution

Channel

4

Differential Voltage measurement

±10 V

Single-Ended Voltage measurement

0-5 V

Current Loop measurement

4-20 mA

Wheatstone Bridge measurement

Full Wheatstone Bridge

Temperature measurement

RTD / PT100 / 3K Thermistors

Power Output

5 V/130 mA or 12 V/130 mA

LPWAN

LTE-M / NB-IoT

Network Protocol

MQTT

Storage

32 GB Micro SD Card (expandable)

Power Supply

18650 Li-ion battery x4
(Supports 5‒18 Vdc charging via solar panel or external source)

Power Consumption

6 months (RSSI <15) ;
12 months (RSSI ≥15)
one measurement per hour

Dimension (L x W x H)

160 x 160 x 70 mm
(excluding antenna)

*All prices, features, and specifications are subject to change without prior notice.