FM231 - Wireless Driveway Alarm

Solar Powered Compatible
  • Instantly alerts you when someone pulls into or out of your driveway
  • The outdoor electromagnetic sensor only detects vehicles; no false alarms due to animals, children, etc.
  • Easy-to-install Electromagnetic Sensor Wand is buried next to your driveway, and detects mass metal moving within a 3-12 ft. radius of the wand.
  • When a vehicle passes by the sensor, an outdoor transmitter communicates wirelessly to an internal base station up to 400 ft. away and sounds a pleasant chime
  • Ideal for home and business
  • Requires 2 AA batteries (not included)
  • Low battery indicator on both the Indoor receiver and transmitter

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Mighty Mule FM231 Wireless Driveway Alarm is rated 2.9 out of 5 by 20.
Rated 3 out of 5 by from short Cable - odd tone So far it seems to work ok - but as mentioned in other reviews, the cable is WAY to short. If you are comfortable splicing you can use cat5 to extend it to the length you need - we used direct burial cat5 (gel filled) and telephone button splices (also gel filled) to add 15' to the line. Most installations don't require that much, but you'll find you wish you had at least 3-4 more feet. Cable does have a standard USB plug on the end, but keep in mind, USB is not water tight, so you cannot just add an extension and bury the connector without some creative thinking. The tone is just plan odd. It's defiantly not a "happy" tone, and it's not a chime other - honestly I would have given this 5 stars if I could change the tone - as the splicing Idid above was not an issue for me.
Date published: 2016-08-27
Rated 1 out of 5 by from Cable is WAY too short!!! Not cool that the cable between the transmitor and magnet is so short that the transmitor has to be right in the grass. Have to mow around it because it won't reach over to any shrub or post.
Date published: 2016-05-21
Rated 5 out of 5 by from Follow the directions and.... I've been interested in such a sensor for a few years but now that they are $60 I jumped on it. Our driveway is almost 18' wide and transitions from poured concrete to concrete pavers. I was a bit concerned with the 12' limit of detection. Being a man, I had a hard time following directions and I had "hoped" that placing the sensor on an embankment would extend my sense range. I was also concerned if poured concrete (with rebar) would "interfere". I found that burying the sensor about 8 inches from the poured concrete and 10-12" down in sandy soil provided the best results. Detecting a car even to the opposite side of the sensor with no issue. The other issue that arose was signal reception. If you remove the cover from the transmitter you can observe the "transmit" LED flash during detection so you will know if the sensor is detecting, then you can "troubleshoot" why the base station isn't receiving the signal. I'm very happy with the results, now if I could add a solar cell charger and hack an interface to the base station with my home automation/home alarm to log events/ send sms messages etc. Thanks for a nice, affordable system.
Date published: 2016-02-22
Rated 3 out of 5 by from Can work well but... It has nowhere near the 400 ft. range advertised. Place it in an application less than 100 ft and you have a good chance of having a reliable alarm system.
Date published: 2016-04-12
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