# Relpol RAT-TPA1B Astronomical Digital Time Switch

**URL:** https://aio.lv/en/product--relpol-2617231--12448447
**Data updated:** 2026-05-18 02:45 (EEST)
**Category:** Smart Switches
**Manufacturer:** Relpol
**Manufacturer code:** 2617231
**EAN:** 5900005301049
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 31.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 26.44 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--relpol-2617231--12448447

## 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 Relpol RAT-TPA1B is a professional astronomical digital time switch designed for precise lighting control based on sunrise and sunset times. This programmable device automates electrical circuits, ensuring energy efficiency and convenience in residential or commercial applications. It features a reliable digital interface for easy scheduling and long-term operation in various electrical installations.

## Long description

The Relpol RAT-TPA1B is a professional astronomical digital time switch engineered for the precise automation of lighting systems based on local sunrise and sunset times. By calculating the exact solar position for a specific geographic location, this device ensures that connected electrical circuits operate in perfect synchronization with natural daylight, eliminating the need for manual adjustments or external light sensors. Its robust design and digital interface make it an ideal solution for enhancing energy efficiency and operational convenience in both residential and commercial electrical installations.
Advantages
This astronomical time switch offers significant benefits by automating lighting schedules without the maintenance requirements of traditional photocells. Because it relies on internal astronomical calculations, it is immune to environmental factors like dirt, fog, or artificial light interference that often cause malfunctions in standard light-sensitive sensors. The device provides high precision in switching operations, which contributes to substantial energy savings by ensuring lights are only active when necessary. Its user-friendly digital interface allows for quick programming and reliable long-term performance, making it a dependable component for modern building automation systems.
Suitable for
Outdoor lighting control for residential buildings and gardens
Street and pathway illumination for commercial properties
Automated control of advertising signage and storefront displays
Public space lighting management
This device may not be suitable for applications requiring rapid, non-scheduled switching or scenarios where lighting must respond to instantaneous changes in ambient light levels, such as sudden cloud cover or storm conditions. It is also not intended for use in high-power industrial machinery control where specialized contactors or safety-rated relays are required.
Key specifications
Operating mode: Astronomical (sunrise/sunset based)
Display: Digital interface
Application: Lighting control and circuit automation
Installation: Standard electrical mounting
To use the Relpol RAT-TPA1B, install the device into the electrical circuit according to the provided wiring diagram. Once powered, access the digital menu to input your specific geographic coordinates or time zone settings. The internal clock will then automatically calculate the daily sunrise and sunset times to trigger the connected load. Periodic checks of the settings are recommended to ensure continued accuracy.
What to consider before purchase
Verify that your local electrical installation supports the device specifications
Ensure you have the correct geographic coordinates for your location for accurate astronomical calculations
Check if the load requirements of your lighting system are compatible with the relay output
For optimal performance and longevity, ensure the device is installed in a protected environment away from extreme moisture or excessive heat. Regularly verify the internal clock settings to maintain precise synchronization with local solar events.

## FAQ

### How much does the Relpol RAT-TPA1B Astronomical Digital Time Switch cost, and is it available for purchase?

The price is 31.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 99 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 Relpol 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 Relpol 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/12448447/68751427_large.webp