485-Interface Sensor Modbus-RTU Protocol Sensor for HVAC & Meteorological Monitoring

• Customization: Available
• Installation Type: Wall-Mounted Type
• Contact: Contactless
• Model NO.: WSD485
• Output Signal Type: Digital Type
• Production Process: Injection
• Material: Engineered Plastic
• Measuring Medium: Temperature and Humidity
• Customized: Customized
• DC Power Supply (Default): 5V DC
• Maximum Power Consumption: ≤0.05W
• Humidity Accuracy: ±4%Rh(5%Rh~95%Rh 25℃)
• Temperature Accuracy: ±0.5℃(25℃)
• Communication Protocol: Modbus-RTU Communication Protocol
• Output Signal: 485 Signal
• Temperature Display Resolution: 0.1℃
• Parameter Setting: Configurable Via PC Software
• Transport Package: Carton Packaging
• Trademark: ThinkSonic
• Origin: China
• Production Capacity: 50000000 Pieces/Years
• Package Size: 25.50cm * 10.00cm * 7.00cm
• Package Gross Weight: 0.750kg

Product Description

Product Introduction

Product Overview

This built-in temperature and humidity sensor features a compact design. Equipped with imported industrial-grade microprocessor chips and high-precision temperature sensors, its circuit ensures excellent reliability and high accuracy.The sensor adopts a 485 communication interface and standard ModBus-RTU protocol, supporting configurable communication address/baud rate and offering a long communication distance. Reverse connection protection is also included, preventing device damage from incorrect wiring.

Key Performance

485 comms interface, standard ModBus-RTU, configurable address/baud rate, max comms cable length 2000m;

Temperature accuracy ±0.5℃, humidity accuracy ±4%RH, high precision and low drift;

Adopts specialized EMC anti-interference components to resist strong on-site electromagnetic interference; industrial-grade processing chip for broad applicability;

Power reverse connection protection: no device damage from positive/negative pole reversal.

Housing Display

Probe Dimensions 1

Probe Dimensions 2

Technical Specifications

No.	Item	Description
1	DC Power Supply (Default)	5V DC,Maximum Power Consumption≤0.05W
2	Accuracy	Humidity	±4%RH(5%RH~95%RH,25℃)
		Temperature	±0.5℃(25℃)
3	Operating Temperature of Acquisition Box	-40℃~+80℃,0%RH~100%RH
4	Communication Protocol	Modbus-RTU Communication Protocol
5	Output Signal	485 Signal,Temperature Display Resolution:0.1℃
6	Humidity Display Resolution	0.1%RH,Temperature and Humidity Refresh Time:1S
7	Long-term Stability	Temperature	≤0.1℃/y
		Humidity	≤1%RH/y
8	Response Time	Temperature	≤15s (1m/s wind speed)
		Humidity	≤4s (1m/s wind speed)
9	Parameter Setting	Configurable via PC Software

Application Scenarios

Suitable for Internet of Things (IoT), vehicle transportation, automatic control, dehumidifiers, Heating, Ventilation and Air Conditioning (HVAC), testing and detection equipment, data loggers, weather stations, household appliances, temperature and humidity regulation, medical and other related temperature and humidity detection and control fields. 

Installation and Interface Instructions

Power Input: 5V DC. When wiring the 485 signal lines, note that the A and B lines must not be reversed, and addresses of multiple devices on the bus must not conflict.

Communication Protocol

Basic Communication Parameters

Encoding	8-bit binary
Data Bits	8 bits
Parity Bit	None
Stop Bit	1 bit
Error Check	CRC (Cyclic Redundancy Check)
Baud Rate	Factory default is 9600bit/s

Company Profile

Xiamen Xinde loT Technology Co., Ltd.

Xiamen Xinde loT Technology Co., Ltd. has long been committed to the applied research of ultrasonic measurement technology. Its independently developed non-contact ultrasonic oil level monitoring products have been exported to overseas markets and occupy an internationally leading position in the field of oil level monitoring. With distributors all over the country, its products are exported to overseas markets and deeply favored by high-end customers.

The company has multiple patents and has been awarded the honorary titles such as "Technology Giant", "Innovative Pilot Enterprise", "Specialized, Refined, Peculiar and Innovative Enterprise" and "National High-Tech Enterprise". R&D personnel account for more than 60% of the total staff. The core R&D members have over ten years of industry experience, endowing the company with strong R&D capabilities.

The company has won the recognition and trust of numerous users with its superior product quality and comprehensive technical services.

FAQ

Q1: What is your company's core business?
A: THINKSONIC TECHNOLOGY CO., LTD. specializes in R&D and manufacturing of precision sensors and IoT solutions. Our product lines cover:
- Automotive IoT: Ultrasonic level sensors, Vehicle Telematics Units, Active Safety Video Terminals
- Structural Monitoring: Settlement/inclination sensors, Hydrostatic level gauges, Strain/pressure gauges, Data loggers with wireless transmission

Q2: Are you a manufacturer or trading company?
A: We are a manufacturer with in-house R&D center and production facilities in Xiamen, China. All products are independently designed and strictly quality-controlled.

Q3: What is your minimum order quantity (MOQ)?
Standard products start from 10 units. MOQ for customized items varies by project complexity - contact us for evaluation.

Q4: How long is your lead time?
A: Standard products: 15-30days after order confirmation. , a bit longer for customized products. But we are very flexible on the lead time, it will depend on the specific orders.

Q5: Can you customize products?
A: Yes. We offer: Logo printing; Packaging redesign; Technical parameter adjustments; Private labeling

Q6: Can I get samples?
A: We have to charge both samples and freight cost, and when you place orders, we'll refund your sample cost. 

Q7: How to handle after-sales issues?
A: Our support includes:  Online troubleshooting   Technical documentation & video guides

Q8: How to visit your factory?
A: Welcome to schedule an audit: 1.Submit visit request via "Contact Supplier" 2.We'll send official invitation letter within 48h 3.Virtual factory tour available via video call