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Sold as each. Vibration sensor to detect entry. Option alarm or door chime. Adjustable alarm time of 5-15 seconds. 9 volt battery operation. Battery low indicator. 3 year warranty. Clamshell (peghook). Manufacturer number: S184. SKU #: 5039961. Country of origin: China. Distributed by .
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.
I ordered a Techko S184S which is a superior model to the Techko S184. Instead of receiving the Techko S184S I ordered, I received a Techko S184. DO NOT!!!! Read morePublished 1 month ago by Twins Collector
I actually like this one better than the more expensive (and very sensitive) one that I have for another door. Read morePublished 16 months ago by Mike G.
I ordered 3 of the Techko S184 portable door knob guard and like them very much. They are not expensive and really do the job well... Read morePublished on October 16, 2009 by P. J. Poe
I purchased 3 of these portable door knob guards for our parents home. All worked fine when received and for the first several weeks. But within 6 weeks all of them were toast. Read morePublished on July 16, 2009 by Richard J. Loving
Bought two of these alarms only one worked. The 9 volt battery was dead after using the alarm for one week.Published on April 18, 2009 by D. KEIL
Although the chime is VERY loud, and sometimes seems to be a little too sensitive, we have been very happy with it.Published on March 26, 2009 by Amazon Customer
I bought this same product from Home Depot for $9.99 and it never worked correctly from the start. I followed the instructions, set it on my door knob, but the alarm never went off... Read morePublished on March 24, 2009 by E. Kong
Very disappointing - this door alarm is waaaaay too sensitive. It will go off for no apparent reason, and there is no way to adjust the sensitivity. Read morePublished on July 10, 2008 by avid reader