---
product_id: 1258794
title: "Safety Technology International, Inc. ED-50 Rex Plus Electronic Watchdog, Barking Dog Alarm"
brand: "sti"
price: "763 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/1258794-safety-technology-international-inc-ed-50-rex-plus-electronic-watchdog
store_origin: PL
region: Poland
---

# 24/7 plug-in power 30 ft ultrasonic sensor range 65 dB realistic bark volume Safety Technology International, Inc. ED-50 Rex Plus Electronic Watchdog, Barking Dog Alarm

**Brand:** sti
**Price:** 763 zł
**Availability:** ✅ In Stock

## Summary

> 🐕‍🦺 Your tireless electronic watchdog—always on, always alert.

## Quick Answers

- **What is this?** Safety Technology International, Inc. ED-50 Rex Plus Electronic Watchdog, Barking Dog Alarm by sti
- **How much does it cost?** 763 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/1258794-safety-technology-international-inc-ed-50-rex-plus-electronic-watchdog)

## Best For

- sti enthusiasts

## Why This Product

- Trusted sti brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Certified:** Sleek floor-mount design with frustration-free certification for easy setup and peace of mind.
- • **Plug & Protect 24/7:** No batteries, no downtime—just continuous, reliable protection from a standard outlet.
- • **Dynamic Bark Frequency:** Barking intensifies as intruders get closer—instant alert escalation.
- • **Four Customizable Sound Modes:** Choose from soothing rainforest sounds to aggressive watchdog alerts tailored to your vibe.
- • **Ultrasonic Intruder Detection:** Sees through walls and glass up to 30 feet for unmatched indoor security.

## Overview

The Safety Technology International ED-50 Rex Plus is a compact, plug-in electronic watchdog alarm featuring a 30-foot ultrasonic sensor that detects movement through walls and glass. It offers four sound modes including realistic barking and soothing alerts, with volume up to 65 decibels. Designed for continuous 24/7 indoor protection without batteries, it’s ideal for homes and businesses seeking a hassle-free, customizable security solution.

## Description

Safety Technology International, Inc. ED-50 Rex Plus Electronic Watchdog, Barking Dog Alarm

## Features

- Barking dog alarm
- Place in any location indoors where you want to detect movement
- Plugs into any standard electrical outlet
- Reliable 24 hour protection
- The closer an intruder gets the more frequent the barking

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Voltage | 12 Volts |
| Control Method | Touch |
| Noise Level | 65 Decibels |
| Mounting Type | Floor Mount |
| Maximum Range | 30 Feet |
| Sensor Technology | Ultrasonic Sensor |
| UPC | 783961712341 750215330019 |
| Global Trade Identification Number | 00750215330019 |
| Manufacturer | Safety Technology Intl |
| Part Number | ED-50 |
| Item Weight | 12.3 ounces |
| Product Dimensions | 6.6 x 5.5 x 10.6 inches |
| Item model number | ED-50 |
| Is Discontinued By Manufacturer | No |
| Size | 1 |
| Thickness | 11 Inches |
| Item Package Quantity | 1 |
| Certification | certified frustration-free |
| Included Components | Barking Dog Alarm,Audible/Annunciation |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Limited 90 day warranty. |

## Product Details

- **Color:** Light Blue
- **Brand:** STI
- **Power Source:** Corded Electric
- **Compatible Devices:** Smartphone
- **Product Dimensions:** 6"L x 5.5"W x 7.5"H

## Images

![Safety Technology International, Inc. ED-50 Rex Plus Electronic Watchdog, Barking Dog Alarm - Image 1](https://m.media-amazon.com/images/I/714OBVZU9cL.jpg)

## Questions & Answers

**Q: Stupid question:  if I set it by the front door and then walk out  the front door to leave, won't I set it off?**
A: Yes. But it will stop when you are out of range. We just say as loud as we can, KILLER SHUT UP WELL BE BACK SOON!   :-)

**Q: My front door which I want to guard is made of steel/aluminum. Would it work sensing anyone that approaches my door from the outside?**
A: Mine does not work through my metal door, but it also has to go through the storm door also. It does work through walls and ceilings.

**Q: Is there a way to remotely "disarm" it (e.g. cell phone app)?**
A: Devices like Wemo are now widely available, fairly cheap, connect to the internet through one's home router & can so be controlled by Amazon Electra or a cell phone app.   It should now be quite easy to interface one with a device like Rex Plus Barking Dog Alarm, to turn the speaker of f& on remotely.

**Q: what does the bark sound like?  Can we hear a sample?**
A: The sound is a vicious German Shepard barking...I don't have the sound for you to hear it.  So sorry!

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**Shop now:** [https://www.desertcart.pl/products/1258794-safety-technology-international-inc-ed-50-rex-plus-electronic-watchdog](https://www.desertcart.pl/products/1258794-safety-technology-international-inc-ed-50-rex-plus-electronic-watchdog)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-27*