# Module ACO CDN-WZ for line short-circuit and uniphone fault detection (MPN 8689)

**URL:** https://aio.lv/en/product--aco-8689--11789784
**Data updated:** 2026-03-09 07:09 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** ACO
**Manufacturer code:** 8689
**EAN:** 5905997381291
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 45.99 €
**Prices and availability valid until:** 2026-07-09 23:59
**Price without VAT (21%):** 38.01 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--aco-8689--11789784

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

ACO CDN-WZ module (MPN 8689) is designed to detect line short-circuits and faults in an indoor uniphone (abonent unit). The device monitors wiring integrity and signals detected faults for maintenance or safety actions. Intended for use in communication and alarm installations to identify wiring failures, reduce troubleshooting time, and ensure reliable operation of connected uniphones.

## Long description

The ACO CDN-WZ module is designed to detect line short-circuits and faults in indoor uniphones used in communication and alarm installations. The module continuously monitors wiring integrity between the uniphone (abonent unit) and the central system, identifying short-circuits and other wiring faults and providing clear signaling for maintenance or safety actions. The device supports rapid identification of line failures to reduce troubleshooting time and help maintain reliable operation of connected uniphones.
Advantages
The module provides continuous, automatic monitoring of subscriber lines and quickly signals short-circuits and wiring faults without manual polling. Its compact design enables installation inside distribution panels or near uniphone units, minimizing cable runs and simplifying wiring layout. Clear fault detection helps technicians locate and address problems faster, improving system uptime and safety compliance in communication and alarm setups.
Suitable for
Indoor uniphone (abonent unit) installations in residential and commercial buildings
Communication systems where line integrity must be monitored
Alarm and security installations requiring rapid detection of wiring faults
Maintenance workflows aimed at reducing troubleshooting time
Key specifications
Function: detection of line short-circuits and wiring faults for indoor uniphones
Mounting: compact module suitable for installation in distribution panels or near devices
Monitoring: continuous line integrity monitoring with fault signaling
Compatibility: designed for use with indoor uniphone subscriber units in communication and alarm setups
Environment: intended for indoor use within communication and alarm installations
How to use
Install the module according to wiring diagrams provided by the system designer or installer, placing it between the central unit and the uniphone subscriber line so it can monitor the line conductors. Ensure secure electrical connections and proper mounting inside an appropriate enclosure or distribution panel. After installation, power the system and verify that the module reports normal line status; simulate faults if required to confirm correct signaling and integration with alarm or monitoring equipment.
Usage recommendations
For reliable operation, use the module in dry indoor environments and follow standard installation practices for communication and alarm systems. Regularly inspect connections and test fault signaling during maintenance cycles. Coordinate placement to minimize cable lengths and avoid electromagnetic interference sources.

## FAQ

### How much does the ACO CDN-WZ module for line and uniphone fault detection cost, and is it available for purchase?

The price is 45.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 01.07.2026 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 ACO 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 ACO 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/11789784/67187659_large.webp