

🚨 Elevate your car’s security game with invisible, smart motion sensing!
The Directed Electronics Install Essentials Dual Zone Motion Sensor 508D uses advanced RF field-disturbance technology to detect moving high-density objects near your vehicle. Designed especially for convertibles, it features dual-zone detection that triggers warnings or sirens based on intrusion level. The sensor includes a 4-pin wiring harness and installation kit for easy plug-and-play integration with compatible alarm systems, providing a discreet yet powerful security upgrade.
| ASIN | B0009VFOME |
| Battery Description | Battery not included |
| Best Sellers Rank | #271 in Motion Detectors (Electronics) |
| Brand | Directed |
| Color | Silver |
| Compatible Devices | Security System |
| Connectivity technologies | Radio Frequency |
| Customer Reviews | 4.3 4.3 out of 5 stars (682) |
| Date First Available | July 20, 2005 |
| Department | Electronics |
| Global Trade Identification Number | 00093207050848 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.52 ounces |
| Item model number | 508D |
| Manufacturer | Directed Electronics Inc |
| Mounting Type | Wall Mount |
| Other display features | Car Audio or Theater |
| Power Source | Corded Electric |
| Product Dimensions | 6.5 x 2 x 8 inches |
| Recommended Uses For Product | Garage |
| UPC | 521375209411 885417276510 768674040462 696582485108 014445261230 093207050848 |
| Upper Temperature Rating | 55 Degrees Celsius |
| Whats in the box | product, manual |
J**N
Good goods
Works as expected
G**S
Python 323 - Perfect Upgrade.
I have the Python 323 (also known as the Python 3203P) installed in a 91 mustang, and this sensor plugs right into the brain with no wire splicing (4 pin MUX port - zone 7) - cable included with sensor. Works like a charm. I installed mine on the ceiling in front of the dome light, and ran the wire through the headliner over to the drivers side frame. I placed the sensor up there because it seemed to get the best response. It warns when someone is near the front or rear of the vehicle as well as the sides. This was my first alarm install, and I'm impressed with this product. If you have an alarm system that has a 4 pin MUX port, this is a great sensor to easily add another layer of security without breaking the bank. Get it! Install Essentials 508D Radar Field Disturbance Sensor
G**H
Radar disturbance detector
I put this detector on a Viper 350Plus alarm. It is very simple to plug in the connector plug. I did install the alarm myself and that was not real simple. The detector works great but is a little weak back at the rear doors on my full size Ford cargo van. The unit is mounted on the ceiling 1 foot behind the front dome light. It functions great from the side doors forward when the van is empty, when van has lots of cargo the sensitivity is less. I have it set to max level on warning and full alarm adjustments when in my driveway and turn detector off with three presses of the alarm button when setting alarm in parking lots. It will sense anyone approaching any door with a window in it. It does not detect through the sheet metal body.
M**.
Good for the value
I installed this with the Viper alarm. It works fine. The only detail is that sometimes the sensor field increases or decreases without manually modifying it. It is quiet tricky to set it to the right setting. But overall a must buy if you care about your belongings.
J**S
My 2nd 1 within 1 month
I have a 15 Sierra that’s in the hood. Windows been broke twice. So I upgraded viper system with tilt, glass break, 2 dual shock sensors and the 508D proximity sensor. 508d is the key to complete an alarm system to me. But it’s useless if you don’t adjust it correctly. Mine is perfect try an look in my window it chirps. Windows open reach in it chirps depending on how far you reach in it goes full alarm. My issues was I placed it center line directly on top of my audio amp. So when I tilt the rear seat up it’s okay and fine. But when I let the seat down it unknowingly crushed my first 508d. Sucked but it was my fault. But I made the decision cause the wire it came with tan short. So I kept the old wiring from the 1st sensors and extended the wiring when the second sensor came in. So now it can slide forward where as to not be crushed by the seat up or down. My only real con about this item is it’s ugly. This item would be a 10/10 if it was somehow not ugly lol. But it is a must have. Took about 2hrs of adjusting and testing to get it perfectly set. But I’m a perfectionist so I enjoy the challenge. Will buy again if this breaks or if install another security system.
J**5
Not reliable. Alarm goes off randomly. DON'T BUY THIS!!
The only thing I can count on this alarm to do is to drive my neighbors crazy at all hours. It doesn't work like it's supposed to. It's been nothing but a hassle. I guess I shouldn't be all that shocked based on how little I paid for it. You get what you pay for. Oh and I'm pretty sure that it killed my 2017 Jeep's battery. I've changed the settings on the motion detection several times, to the point where you have to be inside the vehicle to set it off. Yet it randomly goes off for no reason. There's no motion in or around it, no animals, no people near it, no rain, no wind, nothing, yet there goes the alarm! It has a mind of its own. Sometimes it goes off when someone is 5 feet away from it. Other times I get inside the Jeep, sit down and start fidgeting with things and the alarm stays completely silent. I went out of town for my work for 3 days and left it in a warehouse parking lot at my work. I made sure it wasn't near any other cars so nothing would set it off. Yet when I got back, I had complaints from workers inside the building saying it went off randomly day and night during those 3 days. A couple days later and my battery was completely dead and had to be replaced.
T**.
Works but not as expected
I'm not going to say that I'm unhappy with the product as it does work well. But I have it set at max and you still have to be about touching the car to make it go off. There is no reason for two fields as the total size of the outer most field is so small. The leds telling you which field is being tripped is great, I first thought that only the outer field was working turns out half the time the enter field was being tripped its that the first message was still being broadcasted. I was thinking that you would want the first field to trip a warning and the second to trip the alarm, this will not work, it would be tripping the full alarm all the time. I just have the warning on. One more thing, when you approach the car, some spots trip 4 feet away and some you have to put your face to the glass..
B**O
Fantastic Add on for my S2000
Well, I purchased and installed the viper 3305v a few months back and then sold my hard top for the S2000 so it bothered me that someone could basically have their way with the soft top without ever setting off the alarm. Added this proximity sensor and it works flawlessly...plugged right into one of the open ports on the viper and ran the wiring to center of car. VERY easy to understand adjusting the settings. Basically, set it, step away, test it...then turn car on and off after making adjustment to reset it and test it again. Now, if you come look in my window it'll WARN you to back off, put your arm into the car and it triggers the alarm from both sides of the car. If that fails, I have a woodchuck with a serrated knife and a bad attitude in the trunk! For $22, what the heck are you waiting for? Buy it.
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