# Signal generator Grothe SG 851 — electronic chime/doorbell module, 8–12 V AC input

**URL:** https://aio.lv/en/product--grothe-24012--1950403
**Data updated:** 2026-02-12 09:46 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** Grothe
**Manufacturer code:** 24012
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 44.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 37.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--grothe-24012--1950403

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Grothe SG 851 is an electronic signal generator designed for door chimes and signaling systems. It accepts an 8–12 V AC input and provides electronic tone generation for use with compatible chime speakers or doorbell installations. Suited for residential and light commercial applications, it enables reliable audible signals, simple integration into existing wiring, and compact mounting.

## Long description

Grothe SG 851 is an electronic signal generator designed for door chimes and small signaling systems. The unit accepts 8–12 V AC input and produces electronic tones suitable for connection to compatible chime speakers or doorbell transducers. Its compact form factor and straightforward electrical interface allow installation in residential and light commercial doorbell circuits where reliable audible signalling is required.
Advantages
The SG 851 offers stable tone generation across the specified AC supply range and a compact enclosure that fits into common mounting locations. It simplifies replacement or upgrade of mechanical chime modules by providing an electronic alternative with consistent sound output. Installation requires minimal wiring changes when integrated with existing low-voltage doorbell transformers and push-button circuits.
Suitable for
 Replacement of mechanical door chime modules in homes
 Small office or retail doorbell and entry alert systems
 Integration into multi-button chime systems with compatible speakers
 Retrofit projects where a compact electronic module is needed
Key specifications
 Input voltage: 8–12 V AC
 Function: electronic tone generation for chime/doorbell use
 Output type: audio signal for connection to chime speakers or transducers
 Mounting: compact enclosure suitable for flush or concealed installation
 Application: residential and light commercial signalling
How to use
Connect the SG 851 to the low-voltage AC supply (8–12 V AC) provided by a doorbell transformer and wire the push-button circuit to the module input according to the installation environment. Attach the audio output to the compatible chime speaker or transducer. Verify wiring polarity and secure mounting before applying power. After installation, test the unit by pressing the doorbell push-button and confirm the tone generation and audibility level.
Usage recommendations
Install the module in a dry, accessible location and ensure the doorbell transformer matches the 8–12 V AC input range. Use compatible chime speakers or transducers rated for low-voltage doorbell systems to achieve optimal sound. If unsure about wiring or transformer capacity, consult a qualified electrician to prevent damage and ensure compliance with local electrical regulations.

## FAQ

### How much does the Signal generator Grothe SG 851 cost, and is it available for purchase?

The price is 44.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 23.07.2026 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. 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 Grothe 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 Grothe 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/1950403/47518727_large.webp