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

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?

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?

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)?

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?

The sound is a vicious German Shepard barking...I don't have the sound for you to hear it. So sorry!

3.9/5

Product ID: 1258794

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Details

Color
Light Blue
Brand
STI
Power Source
Corded
Compatible Devices
Smartphone
Product Dimensions
6"L x 5.5"W x

📡30 ft ultrasonic motion detection

🔊65 dB realistic bark volume

🔌Plug & play 110V power

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Description

🐕‍🦺 Your 24/7 digital watchdog—because peace of mind never takes a break.

EFFORTLESS SETUP - Plug into any standard outlet and instantly secure your space—no batteries needed.
24 7 VIGILANT PROTECTION - Never sleeps, never rests—your round-the-clock electronic watchdog.
ADAPTIVE ALERT INTENSITY - Closer intruder, faster bark—dynamic deterrence that escalates with threat level.
PENETRATES WALLS GLASS - Ultrasonic sensor sees through barriers for uncompromised indoor security.
MULTI MODE SOUND SETTINGS - Choose from soothing rainforest, protective bark, or siren alerts to fit your vibe.

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 customizable sound modes including realistic barking and sirens at 65 dB, providing continuous indoor security without batteries. Ideal for homes and businesses seeking a hassle-free, always-on deterrent with adaptive alert frequency based on intruder proximity.

Specifications

Voltage	12 Volts
Control Method	Touch
Noise Level	65 dB
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.

Have a Question? See What Others Asked

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?

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?

Is there a way to remotely "disarm" it (e.g. cell phone app)?

what does the bark sound like? Can we hear a sample?

Common Questions

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TrustScore 4.5 | 7,300+ reviews