# Presence and light radar sensor OXT T155 — USB power, Wi‑Fi (Tuya) for smart home integration

**URL:** https://aio.lv/en/product--oxt-t155--12049755
**Data updated:** 2026-03-12 19:32 (EET)
**Category:** Smart Sensors
**Manufacturer:** OXT
**Manufacturer code:** T155
**EAN:** 5904496829921
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 20.65 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oxt-t155--12049755

## 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

OXT T155 is a compact radar sensor combining presence detection and ambient light measurement with USB power and Wi‑Fi connectivity using the Tuya platform. Designed for smart home and building automation, it detects motion and monitors brightness to control lighting, HVAC or security systems. Fits retrofit and new installations where wireless integration and low-voltage USB power are required.

## Long description

OXT T155 is a compact presence and light radar sensor designed for smart home and building automation. Powered via USB and connected over Wi‑Fi using the Tuya platform, the device combines passive presence detection with ambient light measurement to enable automated control of lighting, HVAC and security systems. Its small form factor and low-voltage USB power make it suitable for both retrofit and new installations where wireless integration and flexible placement are required.
Advantages
The sensor integrates presence detection and lux measurement in a single unit, reducing the need for separate motion and light sensors. USB power simplifies installation in locations without mains wiring while Wi‑Fi (Tuya) connectivity allows cloud-based control and local automation. Compact dimensions and a discreet design support unobtrusive mounting; sensitivity and detection algorithms are tuned for reliable detection of human presence while minimizing false triggers from pets or environmental changes.
Suitable for
 Automated indoor lighting control in residential rooms, corridors and utility areas
 Occupancy-based HVAC control to improve energy efficiency in apartments and offices
 Integration into Tuya-compatible smart home platforms and scenes
 Retrofit installations where low-voltage USB power is preferred over mains wiring
Key specifications
 Detection type: radar-based presence detection combined with ambient light sensing
 Power: USB-powered (low-voltage supply via USB cable)
 Connectivity: Wi‑Fi compatible with Tuya platform for cloud and local control
 Mounting: compact form factor for wall or ceiling placement in indoor environments
 Output: presence status and lux measurement suitable for automation triggers
How to use
Connect the sensor to a USB power source and follow the Tuya-compatible app workflow to add the device to your Wi‑Fi network. Place the sensor where it has an unobstructed view of the monitored area, avoiding direct exposure to strong light sources that could affect lux readings. Configure presence sensitivity and light thresholds in the app or automation platform to match room size and typical occupancy patterns. Use presence and lux outputs to trigger lights, HVAC setpoints or alarm conditions within the smart home platform.
Usage recommendations
For reliable occupancy detection, mount the sensor at a recommended height and orientation that covers the main activity zone; test and adjust sensitivity settings to reduce false positives. When controlling lighting, combine presence detection with ambient light thresholds to prevent unnecessary switching in well-lit conditions. Ensure the USB power source provides stable output and place the sensor away from large reflective surfaces for accurate lux measurement.

## FAQ

### How much does the OXT T155 presence & light radar sensor cost, and is it available for purchase?

The price is 24.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 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 OXT 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 OXT 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/12049755/67536030_large.webp