# Indoor electronic thermometer with hygrometer Terdens 3618 — temperature and humidity measurement

**URL:** https://aio.lv/en/product--terdens-3618--12081208
**Data updated:** 2026-03-12 22:00 (EET)
**Category:** Digital thermometers
**Manufacturer:** Terdens
**Manufacturer code:** 3618
**EAN:** 5901733003618
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 13.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--terdens-3618--12081208

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Terdens 3618 is an indoor electronic thermometer with an integrated hygrometer designed to measure air temperature and relative humidity. The compact device provides continuous monitoring of indoor climate parameters for home, office or laboratory use. It is intended for tracking comfort levels, plant care, storage conditions and general environmental monitoring where temperature and humidity readings are required.

## Long description

Terdens 3618 is an indoor electronic thermometer with integrated hygrometer designed to display air temperature and relative humidity for rooms, offices and other indoor spaces. The compact instrument provides continuous digital readouts that help track comfort conditions, plant care requirements and storage environments. The device measures and displays both temperature and humidity on a single screen to support everyday monitoring of indoor climate.
Advantages
The device combines temperature and humidity measurement in a small footprint suitable for tabletop or shelf placement. Its digital display offers clear numerical readings for quick interpretation, and the built-in sensor provides continuous monitoring without manual effort. The compact design supports placement in homes, offices or hobby spaces where unobtrusive climate tracking is needed. The instrument is battery powered and intended for simple, maintenance-light use.
Suitable for (tasks / use cases)
Monitoring room comfort and indoor climate in living areas and bedrooms
Tracking humidity and temperature for indoor plants and greenhouses
Maintaining storage conditions for sensitive items such as paper, textiles or electronics
General environmental monitoring in offices, workshops and hobby rooms
Key specifications
Measured parameters: air temperature and relative humidity
Display: digital readout showing temperature and humidity simultaneously
Mounting: tabletop or shelf placement (compact form factor)
Power source: battery operated for portable indoor use
Sensor type: integrated environmental sensor for continuous monitoring
How to use
Place the thermometer with hygrometer on a stable surface away from direct sunlight, heat sources and drafts for representative indoor readings. Insert the required batteries according to the device instructions, switch the unit on, and allow several minutes for the internal sensor to stabilize before taking readings. Read the temperature and relative humidity values directly from the digital display. For more accurate trend monitoring, position the device in the area where you want to assess conditions and check readings periodically.
Usage recommendations
To ensure reliable measurements, avoid placing the device near windows, radiators or ventilation outlets. Replace batteries when display dims and clean the housing occasionally with a dry cloth. For plant care or storage-sensitive items, use the thermometer and hygrometer readings to adjust humidification or heating strategies and to document conditions over time.

## FAQ

### How much does the Terdens 3618 indoor thermometer with hygrometer cost, and is it available for purchase?

The price is 15.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 03.07.2026 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 Terdens 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 Terdens 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/12081208/67565334_large.webp