# Environmental Sensor Homematic IP 155105A0

**URL:** https://aio.lv/en/product--eq-3-155105a0--4345806
**Data updated:** 2026-01-12 19:30 (EET)
**Category:** Heating Radiators
**Manufacturer:** eQ-3
**Manufacturer code:** 155105A0
**EAN:** 4047976551057
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 99.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 82.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eq-3-155105a0--4345806

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

The Homematic IP 155105A0 is a wireless environmental sensor that measures temperature. It operates on battery power (AA, 1.5V) and features a compact design with dimensions of 58mm width, 97mm depth, and 71mm height. Ideal for smart home applications, it provides accurate environmental data for better home automation.

## Long description

The Environmental Sensor Homematic IP 155105A0 is a battery-powered wireless sensor designed to measure ambient temperature for smart home heating and automation systems. Manufactured by eQ-3, model 155105A0 (EAN 4047976551057), it provides temperature readings for integration with Homematic IP networks and compatible smart thermostatic systems. The compact housing measures 58 mm in width, 97 mm in depth and 71 mm in height, and it is powered by a single AA 1.5V battery, enabling flexible placement where wired power is not available.
Advantages
The sensor offers wireless temperature measurement with easy battery operation, enabling installation without wiring. Its compact dimensions allow inconspicuous placement near radiators, on shelves or walls. Being part of the Homematic IP ecosystem, the device can supply temperature data to smart heating controls and automation routines. The straightforward form factor and standardized battery type simplify replacement and maintenance.
Suitable for
Monitoring room temperature for radiator control and smart thermostats
Residential zones where wireless temperature sensing is required
Temporary or permanent sensor placement in rooms without access to mains power
Key specifications
Brand: eQ-3
Model / MPN: 155105A0
EAN: 4047976551057
Power supply: AA battery, 1.5 V
Measured parameter: Temperature
Dimensions (W × D × H): 58 mm × 97 mm × 71 mm
Wireless connection: Homematic IP compatible
How to use
Install one AA 1.5 V battery following the device’s battery compartment markings. Add the sensor to your Homematic IP system according to the central control unit or app instructions, using the device’s model number 155105A0 as a reference if required. Place the sensor at room level away from direct sunlight, heat sources or drafts to obtain representative ambient temperature readings. Once paired, verify that temperature data is received by the controller and assign the sensor to the appropriate room or radiator control group within the app.
Usage recommendations
For reliable temperature control, mount the sensor on an interior wall at typical occupant height and avoid locations near radiators, windows or direct sunlight. Replace the AA 1.5 V battery when battery status in the Homematic IP app indicates low charge, and follow local regulations for battery disposal.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.205 kg |
| Battery type | AA |
| Operating temperature (T-T) | 0 - 50 |
| Height | 71 mm |
| Connector(s) | M30 x 1.5mm |
| Width | 58 mm |
| Depth | 97 mm |
| Connectivity technology | Wireless |
| Product colour | White |
| Maximum operating distance | 300 m |
| Battery voltage | 1.5 V |
| Temperature measurement range | 0 - 50 |
| International Protection (IP) code | IP20 |
| Power source type | Battery |
| Built-in display | Yes |
| Measuring environmental conditions | Temperature |

## FAQ

### How much does the Environmental Sensor Homematic IP 155105A0 cost, and is it available for purchase?

The price is 99.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 21 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 01.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Environmental Sensor Homematic IP 155105A0 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 eQ-3 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 eQ-3 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/4345806/58871742_large.webp