CE Certified MQTT Temperature & Humidity Sensors

High-Precision Environmental Measurement Gateways & IoT Hardware Systems Designed for Global Industrial, Server-Room, and Infrastructure Monitoring Networks.

Featured Industrial Environmental Sensors

Explore our CE-certified hardware inventory offering robust Ethernet, Wi-Fi, LoRa, and multi-gas atmospheric parameters for smart architectures.

Custom APEM-5930 Power over Ethernet Sensor
PoE Ethernet

Custom APEM-5930 Power over Ethernet Sensor Manufacturers, Factory

Integrated Power over Ethernet temperature and humidity module with built-in dew point calculations.

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Custom APEM-5930G Ethernet Data Logger
Carbon Monoxide / IAQ

Custom APEM-5930G Ethernet IAQ & Carbon Monoxide Data Logger

Advanced industrial datalogger tracking indoor air quality, carbon monoxide levels, ambient temp, and humidity.

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China APEM-5930G Sensor
SO2 & NO2

China APEM-5930G Sensor for Temperature, Humidity, SO₂ & NO₂

Highly sensitive electrochemical evaluation unit for harsh environments requiring gas and microclimate logs.

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Custom APEM-5930G TVOC O3
TVOC & Ozone

Custom APEM-5930G Multi-Parameter Sensor for TVOC, O₃, Temp, Humidity

Provides real-time volatile organic compound measurements and precise ozone monitoring over Ethernet networks.

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OEM APEM-5736 LoRa Sensor
LoRa Wireless

OEM APEM-5736 LoRa Temperature & Humidity Sensor (Long Battery Life)

Sub-GHz low power wide area network transmitter designed for agricultural and commercial warehouses.

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High-Performance APEM-5930G Ethernet
High Performance

Custom APEM-5930G Ethernet IAQ & CO Sensor - Reliable China Factory

Industrial grade sensor utilizing Swiss imported chips for stable, long-term carbon monoxide analysis.

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China APEM-5930G Ethernet Monitoring
Network Gateway

China APEM-5930G Ethernet IAQ & CO Sensor - Temperature Monitoring

Reliable server rack safety unit featuring concurrent monitoring of physical metrics and hazardous carbon monoxide gases.

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OEM APEM-5930W Ethernet Sensor
Wired/WiFi Dual

OEM APEM-5930W Ethernet Temperature & Humidity Sensor Manufacturer

Flexible network implementation combining physical wired connections and secondary Wi-Fi signal failovers.

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Why Custom MQTT Protocols Define the Future of Industrial IoT

In modern automated systems, standard data delivery structures struggle with high latencies and intensive network overhead. MQTT (Message Queuing Telemetry Transport), working on a publish/subscribe principle, provides a lightweight communication framework perfect for remote sensor devices. By packaging atmospheric data (temperature, humidity, dew point, atmospheric pressure) into minimized JSON strings, MQTT sensors dramatically reduce network bandwidth demands compared to traditional polling protocols like HTTP.

At Beijing Yingchuanglihe Electronic Technology Co., Ltd. (YCLIsensors), our CE-certified MQTT temperature and humidity systems integrate industrial-grade Swiss and German semiconductor chips. By deploying hardware calibrated inside advanced wind tunnels and environmental simulation labs, we provide direct edge-to-broker compatibility, allowing smooth data transmission directly into Amazon Web Services (AWS) IoT Core, Microsoft Azure IoT Hub, Node-RED databases, and localized SCADA engines.

CE EN 61326-1 Industrial Compliance

Every single sensor model leaving our production lines undergoes complete certification tests under international standards. This guarantees complete EMI (Electromagnetic Interference) safety, ensuring measurements are not distorted by heavy industrial frequency converters, switching relays, or magnetic fluctuations typical of factories and smart grid control rooms.

"By ensuring strict compliance with CE, FCC, and RoHS standards, YCLIsensors delivers verified accuracy, device safety, and stable communication for hazardous environments, data centers, and pharmaceutical facilities globally."

Industrial Manufacturing Edge from YCLIsensors China

Combining localized hardware supply chain advantages with rigorous quality control to manufacture reliable industrial environmental sensors.

Advanced SMT Line Integration

Operating 5 fully automated Surface Mount Technology (SMT) production lines. Advanced pick-and-place equipment ensures consistent assembly, preventing microscopic soldering defects and delivering long-term physical reliability.

Imported Sensirion & Bosch Elements

While based in Beijing, we design our electronics around high-grade capacitive polymer sensing elements from Switzerland (Sensirion) and piezo-resistive elements from Germany (Bosch), ensuring low drift over years of operation.

Flexible OEM/ODM Customization

Our Beijing-based R&D engineers modify device firmware to support custom register mappings, alternative Modbus/MQTT payload formatting, specialized probe lengths, and multi-protocol network options.

18+
Years of Industry Expertise
1,500+
R&D / Production Sqm
5+
Automated Production Lines
100+
Specialist Staff Members

Macro Environmental Infrastructure Solutions

Connecting sensor hardware to enterprise-grade analytics software via MQTT, Modbus TCP, and ethernet channels.

Smart Data Center Rack Protection

Modern hyperscale data centers require precise monitoring of humidity levels to prevent electrostatic discharges or water condensation on motherboard arrays. APEM series Ethernet sensors log temperatures, humidity, and dew points directly, communicating with centralized building management tools via MQTT or SNMP protocols.

  • Supports standard Power over Ethernet (PoE) to minimize wiring complexity.
  • Configurable alert settings trigger automated ventilation and fan speed changes.
  • Compact chassis profiles integrate easily inside standard 19-inch rack frames.

Pharmaceutical Cleanroom & Storage Verification

Vaccines, biological samples, and chemical reagents demand tight microclimate management. Our temperature and pressure sensor range provides precise tracking of physical changes, ensuring compliance with strict GMP/FDA storage standards.

  • Optional external wire probes allow remote measurements inside isolated glove boxes.
  • Built-in data logging stores records locally in case of network outages.
  • CE-certified calibration verifies measuring accuracy across wide temperature ranges.

Comprehensive Hardware Ecosystem

YCLIsensors manufactures a complete line of environmental sensors: Ethernet temperature + humidity + dew point meters, barometric pressure modules, multi-gas sensors (TVOC, O₃, CO, H₂S, SO₂, NO₂), RS485 systems, low-power LoRa WAN units, IoT monitoring software, and water leakage detectors.

Our Technological Milestones & History

For close to two decades, Yingchuanglihe has developed cutting-edge IoT hardware, progressing from serial transmitters to advanced autonomous vehicle integration.

2007

YCLIsensors established. Launched our first intelligent environmental monitoring terminal using TCP/IP protocols along with initial configuration software.

2008

Collaborated with Mocha Software to launch the TH-5939 series supporting SNMP network management protocols.

2009

Partnered with Switzerland's COMLAB to supply the TH-5869 protective Ethernet monitor for the Beijing-Kowloon and Beijing-Shanghai high-speed rail networks.

2010

Cooperated with Founder Technology to launch the APEM-6100, one of the earliest environmental sensors to use Power over Ethernet (PoE) technology.

2012

Partnered with Foxconn to establish our sensor specifications as standard for clean manufacturing workshops.

2015

Partnered with Baidu to deploy the next-generation APEM-5900 at Baidu's Yangquan Data Center, upgrading software to handle multi-parameter networks.

2018 - 2019

Introduced integrated outdoor cabinet monitors, successfully deployed in expressway infrastructure projects with Huawei and China Merchants Huaruan.

2021

Designed and supplied high-reliability road-test equipment solutions for autonomous vehicle testing hubs in Beijing.

2023 - 2024

Supported infrastructure builds for AI supercomputing centers. Created divisions with Beijing Enterprises Water Group and Beijing University of Civil Engineering to develop Beidou-integrated telemetry solutions.

Production, R&D, and Global Exhibitions

A look into our manufacturing processes, testing facilities, and exhibitions worldwide.

Production Facility Room 1

Automated SMT Production Lines

Production Facility Room 2

Advanced Calibration Labs

Production Facility Room 3

Strict Quality Inspection

Production Facility Room 4

SMT Pick-and-Place Machinery

Production Facility Room 5

High Precision Temperature Chambers

Production Facility Room 6

Custom Packaging & Warehousing

Global Exhibitions & Tradeshow Presence

Exhibition 1
Exhibition 2
Exhibition 3
Exhibition 4
Exhibition 5
Exhibition 6
Exhibition 7
Exhibition 8

Certified Reliable Equipment

Our systems carry valid CE, FCC, RoHS, and ISO certifications to meet international import and deployment specifications.

Company Operations & Quality Management Certificates

Quality Standard Certificate 1
Quality Standard Certificate 2
Quality Standard Certificate 3
Quality Standard Certificate 4

Safety & Compliance Product Certificates

Safety Certificate 1
Safety Certificate 2
Safety Certificate 3
Safety Certificate 4

Global B2B Procurement & Custom Sourcing Guide

We streamline industrial sensor procurement for global engineers, system integrators, and distributors.

01. Requirement Definition

Specify required variables (temperature, relative humidity, atmospheric pressure, TVOCs) and network interface preferences (PoE Ethernet, WiFi, RS485, Modbus, or MQTT publish settings).

02. Protocol & SDK Alignment

Our software engineering team ensures direct configuration with your platforms, providing custom JSON payloads, Modbus maps, and MQTT topic configurations before shipping.

03. Rigorous Lab Testing

Each custom production batch undergoes complete calibration inside wind tunnels, verifying accuracy, connection stability, and compliance with CE safety standards.

Fast Shipping & Continuous Technical Support

YCLIsensors utilizes rapid express channels (DHL, FedEx, UPS) and air freight options to guarantee reliable delivery cycles worldwide. We provide ongoing technical support with customer inquiries responded to within 8 hours.

Frequently Asked Questions

Expert technical answers regarding MQTT configurations, CE validation, and environmental sensor operations.

What are the main advantages of using MQTT over Modbus TCP or HTTP for environmental sensors?
MQTT uses a publish/subscribe communication pattern with minimal header size, reducing network traffic. Unlike Modbus, which requires continuous polling from a master client, an MQTT sensor can publish data only when a change exceeds a preset threshold (report-by-exception). This reduces bandwidth and makes it ideal for networks with multiple devices.
How does YCLIsensors guarantee CE compliance for industrial environments?
Our sensors undergo testing in accredited labs to meet the EN 61326-1 standard for electrical equipment. This testing evaluates ESD (Electrostatic Discharge) protection, surge immunity, and radio frequency interference safety, ensuring reliable operation when installed near high-power motors, switchgear, or heavy machinery.
Can these sensors be powered directly via Ethernet cables (PoE)?
Yes. Many models, such as the APEM-5930 series, support IEEE 802.3af/at Power over Ethernet (PoE). This allows a single Cat5e/Cat6 network cable to supply both DC power (12V to 48V) and network data, simplifying installation in server rooms, warehouses, and cleanrooms.
Do you offer customizable options for external probe lengths and multi-parameter sensing?
Yes. We offer customization through our R&D team. We can supply external cables (typically 1 to 3 meters), change internal programming to alter communication parameters, and build integrated devices that measure temperature, humidity, dew point, pressure, and gas parameters (like TVOC, Ozone, CO, or H₂S) in a single housing.
What is the typical measurement accuracy and calibration schedule?
Our sensors utilize imported elements from Switzerland and Germany, providing typical accuracies of ±0.3°C for temperature and ±3% RH for relative humidity. For high-precision projects, we can supply calibrated sensors that achieve ±0.1°C accuracy. We recommend checking and recalibrating the units every 12 to 24 months, depending on the exposure to dust or chemical vapors.

Explore Our Full Sensor Range

Integrate reliable telemetry hardware into your infrastructure using our diverse array of environmental sensors.

OEM APEM-5930G Ethernet VOCs
VOCs & Formaldehyde

OEM APEM-5930G Ethernet VOCs & Formaldehyde Temp Humidity Data Logger

Evaluates organic pollutants and formaldehyde levels. Relays air quality updates via standard network protocols.

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China LoRaWAN Indoor Environmental Sensor
LoRaWAN Pro

China LoRaWAN Indoor Environmental Sensor APEM-5616 Pro Factory

Industrial wide-area network device optimized for low energy draw and long wireless range inside buildings.

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Custom APEM-5930P Ethernet Sensor
Barometric Pressure

Custom APEM-5930P Ethernet Sensor: Temp, Humidity, Pressure

Logs atmospheric pressure alongside temperature and humidity, useful for cleanroom and isolation cell monitoring.

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China APEM-5930G Multi-Parameter
All-in-One Gas

China APEM-5930G Multi-Parameter Sensor for TVOC, O₃, Temp, Humidity

Consolidates TVOC, ozone detection, and ambient microclimate tracking into a single Ethernet device.

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China APEM-5930E Ethernet
External Probes

China APEM-5930E Ethernet Temp Humidity Sensor with Optional Probes

Features a separate probe connection to isolate the main transceiver electronics from harsh measurement zones.

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CE Certification APEM-5930G
CE Certified

CE Certification APEM-5930G Ethernet Indoor Air Quality & Ozone Logger

Fully tested and certified indoor air quality station tracking ozone level variations over active networks.

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China APEM-5930G Ethernet Data Logger
Precision Telemetry

China APEM-5930G Ethernet IAQ & CO Data Logger - High-Performance

Accurate real-time datalogger built for industrial facilities needing to monitor air quality levels.

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OEM APEM-5930G Ethernet Multi-Parameter
OEM Custom

OEM APEM-5930G Ethernet Multi-Parameter Sensor (TVOC, O₃, Temp, Humidity)

Configurable sensor board that integrates VOC, ozone, temperature, and humidity sensors for custom monitoring setups.

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