# Indoor Temperature & Humidity Sensor eQ-3 AG HmIP-STH

**URL:** https://aio.lv/en/product--eq-3-150181a0--1501594
**Data updated:** 2026-01-03 12:48 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** eQ-3
**Manufacturer code:** 150181A0
**EAN:** 4047976501816
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 47.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 39.66 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eq-3-150181a0--1501594

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The eQ-3 AG HmIP-STH is an indoor temperature and humidity sensor featuring a compact design with dimensions of 86mm x 20mm x 86mm. It operates on a 1.5V alkaline LR03/micro/AAA battery, ensuring reliable performance. This sensor provides accurate readings for both temperature and humidity, making it ideal for monitoring indoor climate conditions. Its easy installation and integration into smart home systems enhance convenience and comfort.

## Long description

The Homematic IP Indoor Temperature & Humidity Sensor (eQ-3 AG HmIP-STH) measures room temperature and relative humidity for integration into Homematic IP smart home systems. The compact, flat wireless sensor (86 × 20 × 86 mm) operates on a single 1.5 V alkaline LR03/AAA battery and can be powered for up to two years. It can be installed nearly anywhere within the radio range, including into 55 mm single and multi-gang frames from other manufacturers; the required mounting material and adhesive strips or screws are supplied. The device is compatible with the Homematic IP Access Point and app, the Homematic CCU2 central control unit, and selected partner solutions.
Advantages
The sensor provides accurate, continuous measurement of indoor temperature and humidity and communicates wirelessly for easy integration with Homematic IP radiator thermostats and floor heating actuators to regulate room climate. Its compact design and long battery life allow flexible placement without frequent maintenance. Installation is straightforward using the included adhesive strips or screws, and the unit fits common 55 mm frames from third-party manufacturers.
Suitable for
Monitoring room temperature and relative humidity in living rooms, bedrooms and offices
Integration with Homematic IP radiator thermostats for automated temperature control
Connection to Homematic IP floor heating actuators for zonal heating regulation
Placement in flush-mount frames of compatible manufacturers (55 mm single or multi-gang)
Key specifications
Model: eQ-3 AG HmIP-STH (MPN 150181A0, EAN 4047976501816)
Dimensions: 86 × 20 × 86 mm
Power supply: 1 × 1.5 V alkaline LR03/micro/AAA battery (up to 2 years service life)
Measured values: room temperature and relative humidity
Connectivity: wireless Homematic IP radio (for use with Access Point, CCU2, and partner solutions)
Mounting: adhesive strips or screws; compatible with 55 mm frames from other manufacturers
How to use
Install one AAA battery and place the sensor within the Homematic IP network using the Access Point or by pairing with a CCU2. Mount the sensor on a wall or in a compatible frame using the supplied adhesive strips or screws; position it away from direct sunlight, heat sources and drafts for representative measurements. Once paired, configure the sensor via the Homematic IP app or CCU2 and link it to radiator thermostats or floor heating actuators to enable automatic climate control based on measured temperature and humidity.
Usage recommendations
Place the sensor at typical room height (about 1.5 m) on an interior wall, avoid locations near radiators, windows or kitchen stoves, and replace the battery when the app or control unit indicates low battery to ensure uninterrupted measurement and regulation.

## Specifications

| Feature | Value |
|---|---|
| Type | Built-in |
| Weight | 0.085 kg |
| Battery technology | Alkaline |
| Package weight | 163 g |
| Material | Plastic |
| Battery type | LR03/micro/AAA |
| Operating temperature (T-T) | 5 - 35 |
| Number of batteries supported | 2 |
| Height | 86 mm |
| Sensor type | Temperature & humidity sensor |
| Width | 86 mm |
| Depth | 20 mm |
| Purpose | Indoor |
| Package depth | 112 mm |
| Package height | 48 mm |
| Package width | 122 mm |
| Battery voltage | 1.5 V |
| RF transmission frequency | 868.3 MHz |
| Built-in display | No |

## FAQ

### How much does the Indoor Temperature & Humidity Sensor eQ-3 AG HmIP-STH cost, and is it available for purchase?

The price is 47.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 46 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 08.07.2026 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 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

### Where can I download the instructions for Indoor Temperature & Humidity Sensor eQ-3 AG HmIP-STH?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/1501594/57982720_large.webp