Product Description - Dakota Alerts MURS alert probe sensor - Long range wireless driveway alarm that detects vehicles only - Combines the features of the vehicle sensor drive alert with our MURS alert technology - No false signals from large animals or other sources - Upon arrival of vehicle, sends an alert signal to either the M538-BS or M538-HT tranceivers - 5 Channels and 38 sub channels to choose from - Operates on 6 AA alkaline batteries - 6 Month battery life under normal conditions
DKMAPS
Customer Reviews:
I own the entire set...November 9, 2008 I own the entire set- the base station, two walkie-talkies, two motion sensors, and two of the driveway sensors. I've been using the setup for about six months without any problems, the units are great.
I used the driveway monitors, which are buried seismic sensors, to alert when vehicles near my gates. The motion sensors are placed inside the gates. The buried sensors are more accurate so they are placed on the perimeter. Once dialed in correctly, the motion sensors detect vehicles and humans with minimal false alarms. Most false alarms here on the motion detector are caused by wind blowing nearby bushes.
The range is fairly decent for my purposes, the farthest sensor is about a quarter mile, maybe a third, from the base station. The base station will pick up signals better than the hand unit, but both are adequate and are fine. I have clear line of sight without obstructions, and the antennas on each end are placed high (15' high for the gate sensor, 7' high for the indoor base station.)
I've yet to change the batteries in any unit after six months. At first I did have some issues with constant false motion sensor alarms which required strategic placement and settings inside the motion unit.
Other than that, this setup is exactly what I needed at a decent price. Five stars.
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