# Outdoor/Internal Electronic Thermometer Terdens MARS SAFE Weather Station (model 3786)

**URL:** https://aio.lv/en/product--terdens-3786--11833424
**Data updated:** 2026-03-09 14:45 (EET)
**Category:** Weather Station
**Manufacturer:** Terdens
**Manufacturer code:** 3786
**EAN:** 5901733003786
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 55.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 46.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--terdens-3786--11833424

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Terdens MARS SAFE is an electronic outdoor/internal thermometer and weather station (model 3786) designed to measure and display indoor and outdoor temperatures. The device supports combined use as a home weather station with clear temperature readouts, likely wireless outdoor sensor connectivity and compact placement for monitoring home or small-office climate conditions.

## Long description

Terdens MARS SAFE Weather Station (model 3786) is an electronic indoor/outdoor thermometer designed to provide clear, at-a-glance temperature information for home or small-office environments. The compact unit displays indoor and outdoor temperatures and is intended for combined use as a simple weather station for monitoring ambient conditions. The device is suitable for placement on a table or shelf and is compatible with wireless external sensors for outdoor temperature measurement.
Advantages
The device offers separate indoor and outdoor temperature displays for quick comparison, a compact footprint that allows flexible placement in living spaces, and straightforward operation suited to everyday use. Wireless sensor connectivity enables outdoor temperature readings without running cables, while the clear numeric display supports easy readability from a short distance. The unit’s design emphasizes functional monitoring of room climate and external conditions.
Suitable for
Monitoring indoor room temperature in living rooms, bedrooms, nurseries, or offices
Tracking outdoor temperature near windows, balconies, or patios when paired with an external sensor
Checking temperature differences between indoor and outdoor environments
Compact climate monitoring for small apartments, home offices, and cabins
Key specifications
Function: electronic indoor and outdoor thermometer with weather station features
Display: clear numeric readout for indoor and outdoor temperatures
Sensor connectivity: supports wireless external sensor for outdoor measurements
Placement: tabletop or shelf mounting; compact housing for small spaces
Power: battery-powered (batteries required — check user instructions for type and installation)
How to use
Install batteries according to the user instructions and place the indoor unit on a stable surface within the living space. Position the external wireless sensor outdoors in a shaded, well-ventilated location away from direct sunlight and sources of heat to ensure accurate readings. Allow several minutes for the sensors to pair and stabilize; the display will then show current indoor and outdoor temperatures. Consult the device manual for instructions on resetting, changing measurement units if available, and maintaining reliable wireless connection between the base unit and external sensor.
Usage recommendations
For reliable outdoor measurements, mount the external sensor in a shaded area sheltered from rain and direct solar radiation, and avoid placing it too close to walls or heat sources. Regularly check and replace batteries to maintain continuous operation and accurate readings.

## FAQ

### How much does the Terdens MARS SAFE Electronic Outdoor/Internal Thermometer 3786 cost, and is it available for purchase?

The price is 55.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 06.07.2026 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/11833424/67233939_large.webp