Techko S184 Portable Door Knob Guard with Vibration Sensor

by Techko

Product Description

From the Manufacturer

Techko’s S184 is used to protect your home from unauthorized entry by detecting vibration to a protected door. Simply hang the unit over a door knob and turn the unit on. The S184 will set itself in 20 seconds. Choose between 115 db alarm siren or a pleasant chime alarm. The chime can be used to provide a child safety alert or for an entry announcement.

Product Description

Techko's S184 is used to protect your home from unauthorized entry by detecting vibration to a protected door. Simply hang the unit over a door knob and turn the unit on. The S184 will set itself in 20 seconds. Choose between 115 db alarm siren or a pleasant chime alarm. The chime can be used to provide a child safety alert or for an entry announcement. Techko Portable Door Knob Guard with Vibration Sensor Protect your home from unauthorized entry by detecting vibration to a door Wireless with 9-volt battery operation Features low battery LED indicator and adjustable alarm time of 5-15 seconds

Product Details

• Shipping Weight: 3.2 ounces
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000H42HCS
• Item model number: S184
• Average Customer Review: 3.1 out of 5 stars  See all reviews (16 customer reviews)
• Amazon Best Sellers Rank: #124,612 in Home Improvement (See Top 100 in Home Improvement)

Customer Reviews

Most Helpful Customer Reviews

13 of 13 people found the following review helpful:

5.0 out of 5 stars Door Alarm, October 20, 2007

By 

J. Adams (Pasadena, CA United States) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Techko S184 Portable Door Knob Guard with Vibration Sensor (Tools & Home Improvement)

We bought two of these alarms. They fit nicely over the knob and the sound is not obnoxious (we use the chime setting.) Its quick to respond to vibrations from the door being opened. These are inexpensive by comparison to other products on the market. I bought three different kinds of intruder protection items, and these served our purpose perfectly.

9 of 10 people found the following review helpful:

2.0 out of 5 stars Can't disarm without LOUD EAR-PERCING CHILD AWAKENING noise, June 11, 2008

By 

C. Hoyt "Tree-Hugger" (Glen Burnie, MD) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Techko S184 Portable Door Knob Guard with Vibration Sensor (Tools & Home Improvement)

It works, but it is sensitive. Half the time you can't turn it off without waking up the neighborhood. I tried to cautiously hold down the unit when turning it off. It is possible to quietly disarm, but it is hard. Imagine one of those movies where the guy is trying to disarm a bomb without blowing himself up and everyone around him. THAT is the kind of sensitivity it takes to turn the thing off. Purchase only if you have patience, don't have kids, and you are halfway deaf.

5 of 5 people found the following review helpful:

5.0 out of 5 stars If They're up to No Good This Thing Will Stop Them!, July 4, 2008

By 

Willis - See all my reviews

Amazon Verified Purchase

This review is from: Techko S184 Portable Door Knob Guard with Vibration Sensor (Tools & Home Improvement)

I got this because my former supervisor at my old job just cant get enough & she tries to come & pick/bump our locks. After moving 900 miles across the country, 3 months after we moved into our apartment we started noticing our deadbolt unlocked. We wanted to see if we were simply forgetting to lock it or was someone up to something. Sure enough at 4 am the day after we installed this it started going off. I estimate the sound to be at least 120 decibels; in the next room! It was soo loud we had to cover the speaker with some tape to keep from waking up all 12 units in our building! So far the lock picker has stayed away recently. Great for seniors who may be hard of hearing!