Guardline Original Extra Sensor

$69.99 -14%
231   |  
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  • Additional sensor compatible with the Guardline Motion Alert. This sensor is NOT compatible with the 1/4 Guardline Motion Alert. 
  • Add up to 4 sensors per zone (for a total of 16).
  • Sensor has a 40 ft. detection range. 
  • Weather resistant and ready to withstand the elements. 
** As with all wireless products the maximum range is determined by the amount of interference between the sensor and receiver. Any obstruction in direct line of sight range will reduce the effectiveness of the signal between the individual units. For maximum distance reduce as much interference as possible.

Add sensors to your existing Guardline 500' driveway alarm to increase your coverage. Pair up to 4 sensors per zone for a total of 16 sensors per receiver!

Adding an extra sensor to your Guardline 500' driveway alarm is quick and easy. Choose a new chime for your sensor so you know instantly which sensor is being activated.

With over 30 melodies to choose from and multiple customizable options, each sensor can be configured to your needs in order to deliver a truly custom and ideal home security network.

Customer Reviews

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  • Reviews (231)
  • Questions (3)

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James F.
United States

would not buy another

I bought 3 of these they say up to 500 ft more like 100ft and must be in sight of sensor to work

Rodney H.
United States

Guard line review

I was very glad that I seen Guardline advertised and did a little research on their products. Found how easy it was to set up and install. The sensors work like a charm and no issues. I would highly recommend anyone to purchase from Guardline.

Rodney H. verified customer review of Guardline Original Extra Sensor
Calvin B.
United States

The product lives up to its advertisement, works better than I anticipated.

The product lives up to its advertisement, works better than I anticipated.

Mark C.
United States

Guardline Original Extra Sensor

This item works very well. I would highly recommend this for people looking for a little security. My drive is 425 feet long so it helps me tremendously.

Wayne G.
United States


Fairly easy to set up. Very sensitive to movement which is good. Will most likely buy more sensors.

Q: I want to use current system as alarm could you specify how wide is the beem,please include the hight and width, also what barier it needs to stop the beam , the space i,m trying to monitor is around 80 ' with posibility of installing two sensors facing outward or each other it will depend the answers i will get.thank you
Answers (1)
A: The beam has a 12 degree field of view left to right, and a very slim vertical margin. The sensor can see at max 40 ft. For your situation, it sounds like you would need two sensors.
Q: I'm interested in the GUARDLINE WIRELESS DRIVEWAY ALARM and would like to know what exactly it means that it can go through walls. Can I place the sensor nearby the window indoor and still be able to detect motions? And how low is the lowest volume?
Answers (1)
A: The signal from the sensor from the receiver can go through walls. The sensor cannot see through windows, as it is an infrared sensor. The sensor will see the window as a solid heat signature and cannot see heat signatures on the other side of the window.
Q: Can it work from 220V output for 12V adapter on receiver?
Answers (1)
A: The Guardline receiver has an input range of 110-240V.
Q: If I mount the sensor at the opening of my garage door will the hot Florida sun set the heat sensor off? It will be used to alarm me when someone enters my garage and my garage faces SSW so it gets really hot.
Answers (1)
A: If the you have a PIR sensor, there is a small chance that it will give off a false alarm from a quick beam of direct sunlight. A good fix for this is to have the sensor pointed in a direction where the sun will not hit the eye directly.
Q: My company is situated on a busy road with a very steep driveway. From the top of the driveway it is impossible to see if somebody is coming up until it's (almost) too late so we are looking to keep any future accidents from occurring. Is it possible to use the sensor at the bottom of the driveway and the receiver at the top in a waterproof box and connected to a light? Or is there possibly a different product that would work better?
Answers (1)
A: As long as you keep the receiver plugged into power and kept in a weatherproof box, then your setup would work. The receiver has to be plugged into power in order to power the 12v light that you plan on running. Please give us a call at 888-519-0413 with any further questions. Devin, Guardline


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