# Temperature and humidity Wi‑Fi controller Sonoff THR320D 20A LDC for remote monitoring and automatic control

**URL:** https://aio.lv/en/product--sonoff-sonoff-thr320d--5648048
**Data updated:** 2026-01-21 10:59 (EET)
**Category:** Other goods
**Manufacturer:** Sonoff
**Manufacturer code:** SONOFF-THR320D
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 30.35 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 25.08 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sonoff-sonoff-thr320d--5648048

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Sonoff THR320D 20A LDC is a Wi‑Fi temperature and humidity controller designed for remote monitoring and automatic control of heating, ventilation, or other appliances. The device supports 20A switching, connects via Wi‑Fi for app control, and uses temperature and humidity sensors to trigger actions. Suitable for home automation, greenhouse climate control, and appliance protection.

## Long description

Smart Wi‑Fi temperature and humidity controller SONOFF THR320D converts a conventional thermostat into a smart controller, enabling automated environmental control and remote monitoring of temperature and humidity. It supports multiple sensor types for different applications, offers dry contact output for integration with existing systems, and can handle high-load devices up to 20 A. The unit stores up to six months of temperature and humidity history and supports LAN control so basic operation continues when Wi‑Fi is unavailable.
Advantages
The controller uses a V0 class flame-retardant polycarbonate casing and includes a varistor to absorb peak voltages from lightning strikes or unstable power supply. An upgraded RJ9 4P4C sensor connector supports hot-plugging for a stable and reliable connection. The device provides timely push notifications when measured values or output states change and can export six months of hourly temperature and humidity history in .xlsx format. It integrates with eWeLink, can be added to Home Assistant via an add-on, supports IFTTT for cross-brand automation and offers voice control and web-based management.
Suitable for
Automating and remotely monitoring home heating systems and electric floor heating
Environmental monitoring for baby rooms or nurseries
Monitoring water temperature for aquariums
Controlling irrigation and soil moisture for plants and greenhouses
Integrating with boilers or systems that use dry (volt-free) contacts
Key specifications
Power input/output: 100–240 V AC, 50/60 Hz
Maximum load current: 20 A
Dry contact output rating: 5–30 V DC, 1 A max
Wireless: Wi‑Fi IEEE 802.11 b/g/n, 2.4 GHz
Casing material: V0 class flame‑retardant polycarbonate (PC)
Sensor connector: RJ9 4P4C, hot-plug supported
Mounting options: DIN rail or panel
Measurement footprint: approx. 98 mm × 54 mm (depth not specified)
How to use
Install the controller on a DIN rail or panel and connect power (100–240 V AC). Attach the appropriate sensor (temperature & humidity, waterproof temperature, or soil moisture) using the RJ9 4P4C connector. Configure the device using the eWeLink app or web control, set temperature and humidity thresholds, and create automations or scenes as needed. For integration with existing systems, connect the device’s dry contact output to the external controller or boiler input; note the dry contact only switches the circuit and does not supply power. LAN control ensures local operation continues if Wi‑Fi is lost.
Usage recommendations
Place sensors in representative locations for accurate readings (avoid direct sunlight, heating vents or splashing water unless using the waterproof sensor). Use the appropriate sensor type for the application (waterproof sensor for aquariums, soil moisture sensor for plants). Export historical data periodically if long-term records are needed and ensure any high-load equipment connected does not exceed the 20 A rating.

## FAQ

### How much does the Wi‑Fi temperature & humidity controller Sonoff THR320D 20A LDC cost, and is it available for purchase?

The price is 30.35 € (valid at the time of publication and already includes all taxes). The item is available for order — 26 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Thursday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Sonoff products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Sonoff service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/5648048/43762507_large.webp