Huidu HD-S70 Seven-Element Environmental Sensor – RS485
$ 340.00
HD-S70 combines seven environmental measurements in a louvered sensor housing. It provides RS485 output using Modbus RTU, with a 10–30 V DC power supply and a listed communication distance up to 2000 m.
1000 in stock
HD-S70 Seven-Element Sensor Transmitter
The Huidu HD-S70 collects temperature, humidity, noise, PM2.5, PM10, atmospheric pressure and light intensity in one louvered housing. It is designed for environmental monitoring systems that receive sensor data over RS485 using Modbus RTU.
| Parameter | Specification |
|---|---|
| Temperature range | −40°C to +120°C |
| Humidity range | 0–99% RH |
| Noise range | 30–120 dB |
| PM2.5 and PM10 range | 0–1000 µg/m³ |
| Particulate resolution | 1 µg/m³ |
| Particulate consistency | Listed as ±10%; dual-frequency collection and automatic calibration |
| Atmospheric pressure range | 0–120 kPa |
| Light intensity range | 0–200000 lux |
| Communication | RS485; Modbus RTU |
| Communication distance | Up to 2000 m, as listed in the product information |
| Power supply | 10–30 V DC |
| Maximum power consumption | 0.8 W for RS485 output |
| Housing | Louvered; UV-resistant material |
Using the Seven Measurements
PM2.5 and PM10 are collected simultaneously, while the light module uses a photosensitive probe. The combined measurements allow a monitoring system to collect ambient conditions through a single transmitter. Match the host device to the Modbus RTU communication settings in the specification.
The V4.2 specification confirms the temperature and humidity ranges and DC supply values shown above. Measurement ranges describe the sensing limits; refer to the installation instructions when selecting a mounting position.
Dimensions Reference
Specification Download
Download the HD-S70 specification (PDF)
Frequently Asked Questions
Which seven elements does the HD-S70 measure?
It measures temperature, humidity, noise, PM2.5, PM10, atmospheric pressure and light intensity.
What power supply does the S70 require?
The V4.2 specification lists a 10–30 V DC supply and maximum power consumption of 0.8 W for RS485 output.
Does it communicate using Modbus RTU?
Yes. It uses Modbus RTU over RS485, with a listed communication distance of up to 2000 m.
What are the temperature and humidity ranges?
The V4.2 specification lists −40°C to +120°C for temperature and 0–99% RH for humidity.
What are the particulate and light measurement ranges?
PM2.5 and PM10 are measured over 0–1000 µg/m³ with 1 µg/m³ resolution. The light intensity range is 0–200000 lux.
| Weight | 2 kg |
|---|
Be the first to review “Huidu HD-S70 Seven-Element Environmental Sensor – RS485”
You must be logged in to post a review.
Will I be charged with customs and taxes?
The prices displayed on our site are tax-free (in US Dollars), which means you may be required to pay import duties and taxes once you receive your order. Import taxes, duties, and related customs fees will be determined by your local customs office when your order arrives at its final destination.
Please note that these additional charges and taxes are your responsibility, and we do not take any responsibility for them. We are not liable for paying or reimbursing any customs duties, taxes, or related fees. For more details on these charges, please contact your local customs office.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations..
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound..
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)..
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item..
Related products
Reviews
There are no reviews yet.