# Relay module Ajax Relay Horizontal Black — 7–24 V, 39×18×33 mm

**URL:** https://aio.lv/en/product--ajax-38204--10996874
**Data updated:** 2025-12-07 16:14 (EET)
**Category:** Home Automation
**Manufacturer:** Ajax
**Manufacturer code:** 38204
**EAN:** 4823114015854
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 45.49 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 37.60 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ajax-38204--10996874

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Ajax Relay Horizontal Black is a compact relay module for home automation and security installations. Designed for horizontal mounting, it accepts a nominal input voltage of 7–24 V and has dimensions 39 × 18 × 33 mm. The device provides remote switching of circuits, convenient integration into control systems, and saves installation space in panels or enclosures.

## Long description

Low-current relay to control appliances remotely. Relay provides flexible settings and low power consumption, with a dry contact isolated from the device power supply so it can be used in both low-voltage and household networks. The device supports bistable and pulse modes, and can be connected to a power supply unit with a backup battery. Compact dimensions (39×33×18 mm) and an external antenna enable easy placement in a junction box, electrical panel, or switching unit body while maintaining stable connectivity.
Advantages
Versatile control options and low energy use make Relay suitable for a wide range of equipment. An isolated dry contact ensures compatibility with different power systems. Quick connection to the hub by scanning a QR code in the Ajax app simplifies setup. The Jeweller radio protocol provides frame synchronization, device authentication and encryption to maintain reliable and secure communication between system components. Professional installation is available through certified Ajax partners.
Key specifications
 Type: low-current relay with dry contact
 Operating modes: bistable and pulse
 Connectivity: external antenna for stable radio link
 Compatibility: suitable for low-voltage and household networks
 Dimensions: 39×33×18 mm
 Setup: QR code pairing with Ajax app
 Protocol: Jeweller (synchronization, authentication, encryption)
How to use
Install the Relay inside a junction box, electrical panel or switching unit body and connect the controlled appliance to the dry contact according to the wiring rules for the target network. Power the device from an appropriate supply, optionally using a power supply unit with a backup battery. Pair the Relay with the hub by scanning the QR code in the Ajax app; configuration and mode selection (bistable or pulse) are done through the app. Verify stable radio connection and test switching operations before finalizing the installation.
Recommendations
For reliable operation and to disclose all device features, use professional installation services from a certified Ajax partner. Follow local electrical safety regulations when connecting the relay and the controlled equipment.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.025 kg |
| Operating temperature (T-T) | 0 - 64 |
| Height | 33 mm |
| Width | 39 mm |
| Depth | 18 mm |
| Nominal input voltage | 7 - 24 |
| International Protection (IP) code | IP20 |
| Housing colour | Black |
| Mounting position | Horizontal |
| Lifetime (cycles) | 200000 |

## FAQ

### How much does the Ajax Relay Horizontal Black — relay module 7–24 V cost, and is it available for purchase?

The price is 45.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 57 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 09.07.2026 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 Ajax 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 Ajax 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

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