# Wireless Mini Entry Alarm GreenBlue GB3400 — battery powered portable entry sensor, compact design

**URL:** https://aio.lv/en/product--greenblue-gb3400--7125698
**Data updated:** 2026-05-06 17:38 (EEST)
**Category:** Control Systems
**Manufacturer:** GreenBlue
**Manufacturer code:** GB3400
**EAN:** 5902211101611
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 17.76 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--greenblue-gb3400--7125698

## 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

The GreenBlue GB3400 is a wireless mini entry alarm designed as a battery powered portable sensor for doors, windows or small openings. Its compact form enables easy placement for short-term or permanent use, providing immediate audible alerts on unauthorized entry. Ideal for home, office or travel to enhance security with simple installation and no wiring.

## Long description

The GreenBlue GB3400 is a wireless mini entry alarm designed as a battery-powered portable sensor for doors, windows and other small openings. Its compact design allows for quick placement without wiring, delivering an immediate audible alert when the sensor detects unauthorized opening. The device is suitable for short-term use during travel and temporary stays as well as for permanent placement in homes, offices or storage areas where a simple, independent alarm is required.
Advantages
The GB3400 combines compact dimensions with battery operation to provide a maintenance-light security solution that requires no electrical installation. Its wireless nature and small footprint make it unobtrusive and easy to relocate. The unit produces a clear audible alarm on activation and is designed for straightforward one-person installation and removal. Low power consumption extends battery life, and the durable casing supports everyday indoor use.
Suitable for
Doors and entryways in homes and apartments
Windows, balcony and patio doors
Office rooms, cabinets and small storage areas
Temporary protection when travelling or staying in rentals
Supplementary alarm for sheds, garages or garden houses
Key specifications
Power source: battery powered for independent operation
Type: wireless magnetic entry sensor with audible alarm
Design: compact and portable housing for easy placement
Installation: adhesive or screw mounting options for doors or frames
Alarm output: immediate audible alert on contact break
Intended use: indoor environments such as homes, offices and travel accommodations
How to use
Mount the sensor and the magnet element on corresponding parts of the door and frame or window sash and frame, maintaining the recommended alignment and distance between the two parts. Install batteries according to the polarity markings, then test the unit by opening the protected entry to trigger the alarm. For temporary use, attach the sensor with adhesive pads; for long-term installation, secure the device with screws if provided. Periodically check the battery and test the alarm to ensure reliable operation.
Usage recommendations
Place the sensor on solid, dry surfaces and avoid locations exposed to heavy direct moisture or extreme temperatures. Verify alignment after repeated door or window movement and replace batteries promptly when alarm volume weakens. Use the device as a supplementary alarm and not as a substitute for comprehensive security systems when higher levels of protection are required.

## FAQ

### How much does the Wireless Mini Entry Alarm GreenBlue GB3400 cost, and is it available for purchase?

The price is 21.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 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

## Image

https://aio.lv/img/cache/product/7125698/51499004_large.webp