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This alert system is compact and very effective. The one that I am replacing lasted for approx. 6 years. I've come to heavily depend on this particular driveway alert system. By experience I learned early on that you have to shelter the outdoor part of this unit as rain/snow can wipe it out pretty quickly. Because I wanted secrecy, I covered the little 'red' light on the outside part so that intruders were unaware that I was monitoring for trespassers; consequently no one comes near my cabin without me knowing it. Unfortunately, they also alert when animals pass by them. This system has a volume control switch (high/low) so that's a good thing. Bunker Hill is a good brand, but I would suggest that customers buy the better batteries for them as they last way longer - meaning that you don't have to make as many trips outdoors to replace them. With good batteries I can usually go about a year without changing them out. Highly recommend this product. Read full review
Verified purchase: Yes | Condition: New
If you walk in front of it 5 times it might only activate once or twice. There were many false alarms for no reason. My porch is closed in and locked at night, yet it would activate and would not shut off until I removed the battery. This always seemed to occur when the weather turned colder. I have others units from a different company that work great, so I know how to properly use them.
Verified purchase: Yes | Condition: New
Great little device, I have been using Bunker Hill wireless alert system for 4 years now, and for the price, that's an unbeatable deal. The battery last for over a year and the outdoor sensors works on all weather conditions. I am very pleased and I have recommend it to many of my friends.
Verified purchase: Yes | Condition: Pre-owned
I own a small business and every time I would walk to the back, someone would always come in the front. I never knew they were there until I would see them leaving or here them yelling for service. The door chime works great. No more surprises. Steve W.
Verified purchase: Yes | Condition: New
Armadillo constantly forage in our yard here in Florida. They are so strong that they break out of the live trap I set and damage the door so I use this to tell me as soon as one enters. Works great, although wife doesn't appreciate the nighttime alarm, and no more damage to the trap or lawn.
Verified purchase: Yes | Condition: New
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