# Hygrometer Thermometer GreenBlue GB540 — indoor 0–50°C / outdoor -20–65°C, DCF clock, outdoor sensor 60 m, black

**URL:** https://aio.lv/en/product--greenblue-gb540--2125962
**Data updated:** 2026-01-21 10:52 (EET)
**Category:** Weather Station
**Manufacturer:** GreenBlue
**Manufacturer code:** GB540
**EAN:** 5902211113348
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Compact hygrometer-thermometer GreenBlue GB540 measures indoor temperature 0–50°C and outdoor -20–65°C with one wireless outdoor sensor (range up to 60 m). Features built-in display, DCF radio clock with alarm, moon phase, weather forecast and trend display. Battery powered (AA, receiver 2, sensor 2), practical for home or office climate monitoring.

## Long description

The Greenblue 60133 Black is a combined hygrometer and thermometer designed for monitoring indoor and outdoor humidity and temperature. The unit provides separate measurement ranges for outdoor and indoor temperature, shows trends for both humidity and temperature, and integrates clock and alarm functions. The compact black housing measures approximately 160 mm wide, 35 mm deep and 115 mm high and is powered by standard LR6 (AA) batteries, allowing flexible placement in living spaces, work areas or near entry points.
Advantages
The device displays current indoor and outdoor temperature and relative humidity with trend indicators to show rising or falling values. Built-in clock and alarm functions add utility beyond basic environmental readings. The unit uses common AA batteries and has a compact profile that fits on shelves or can be positioned on tabletops. The black finish provides a neutral appearance suitable for most interiors.
Suitable for (tasks / use cases)
Monitoring room humidity and temperature in living rooms, bedrooms and offices
Tracking outdoor temperature near windows, balconies or entrances
Using trend information to assess changes in indoor climate for HVAC adjustments
Keeping a simple clock and alarm in the same compact device
Key specifications
Outdoor temperature measurement range: -20 to 65 °C
Indoor temperature measurement range: 0 to 50 °C
Built-in display for simultaneous readings
Trend display for hygrometer and thermometer readings
Clock and alarm functions integrated
Power supply: LR6 (AA) batteries
Product colour: Black
Approximate dimensions: 160 mm (W) × 35 mm (D) × 115 mm (H)
How to use
Install LR6 (AA) batteries in the battery compartment following polarity markings. Place the main unit indoors on a stable surface or mount it according to the manufacturer’s instructions if wall placement is required. Position the outdoor sensor or the unit where it can measure exterior conditions without direct exposure to rain or intense sunlight. Read the display for current indoor and outdoor temperature and humidity values; observe trend indicators to understand recent changes. Set the clock and alarm using the device controls to enable timekeeping functions.
Usage recommendations
For accurate readings, avoid placing the device near heat sources, air vents or in direct sunlight. Replace batteries promptly when low to maintain display and trend functions. Use the trend indicators together with regular checks to determine whether ventilation, heating or humidification is required.

## Specifications

### Packaging data

| Feature | Value |
|---|---|
| Battery included | No |
| Outdoor sensor | Yes |
| Number of outdoor sensor | 1 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 115 mm |
| Width | 160 mm |
| Depth | 35 mm |
| Receiver dimensions (WxDxH) | 50 x 30 x 95 |

### Power

| Feature | Value |
|---|---|
| Battery type | LR6, AA |
| Power source | Battery |
| Number of batteries (sensor) | 2 |
| Number of batteries (receiver) | 2 |

### Features

| Feature | Value |
|---|---|
| Product colour | Black |
| Alarm clock | Yes |
| Temperature measurement range (inside) (T-T) | 0 - 50 |
| Temperature measurement range (outside) (T-T) | -20 - 65 |
| DCF radio clock | Yes |
| Alarm function | Yes |
| Clock function | Yes |
| Clock/Date display | Yes |
| Temperature measurement units | °C |
| Measuring functions | Outdoor thermometer, Outdoor hygrometer, Indoor thermometer, Indoor hygrometer |
| Weather forecast | Yes |
| Outdoor sensors range | 60 m |
| Moon phase | Yes |
| Measuring functions trend display | Thermometer, Hygrometer |
| Weather station extremum data | Thermometer, Hygrometer |

### Display

| Feature | Value |
|---|---|
| Built-in display | Yes |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 GreenBlue 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 GreenBlue 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: temperature measurement range (outside) (t-t), temperature measurement range (inside) (t-t), built-in display, alarm function, clock function, temperature measurement units, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/2125962/65633729_large.webp