Search results

  1. E

    I need to secure construction site. Is my idea reasonable?

    Sounds good your temporary cameras/bridge proposal. I will also concern about security. Where you plan to install the cameras? How safe is the construction site to include all the electronics? Will it be mounted on a single point, maybe in a pole covering about 270’ angle or to be distributed...
  2. E

    How do you seal an unused 12V Connector on the camera?

    heat shrink tube, small amount of 3M glue in the tip, seal applying heat with a lighter
  3. E

    Wanted - a car alarm for people who refuse to lock their doors

    Agree with all previous suggestions. As an example, I will consider the same deterrent approach used on residential installations while detecting movement in the patio, turning ON smart switches in sequential/timely order (kitchen>5sec>hallway>10sec>terrace>5sec, etc.). For a vehicle, installing...
  4. E

    Dahua intercom add external keypad

    if you have an exit button at the garden door, just connect the new keypad N.O. relay signal to that same path.
  5. E

    Dahua intercom add external keypad

    not sure about this particular intercom, but if the door latch is energized at all time (fail-safe), is a matter of connecting the keypad in series (NC/COM) with that electric lock power source (opening the garden door keypad relay will cut the power) edit: if fail-secure type lock, just...
  6. E

    Alarm input for missing power?

    Is basically contact closures interfaces (NO/NC) for both Input/Output connectors. Just do not exceed the amps rating, specially while using the Output pin (controlling a siren, strobe, light). It is normally about 1 amp DC, but you may add an external relay for higher currents. But using the...
  7. E

    Alarm input for missing power?

    As long as not exceeding the coil current, should be no problem. It also applies to keeping the power pack connected at all times. It is a matter of connecting the N.C. Relay output (is open while energized) while connecting directly to the N.O. Input (NVR default). To confirm the operation...
  8. E

    Alarm input for missing power?

    Not sure about your particular model, but should apply as well. There is an “alarm input”, able to handle your “power pack” voltage. Connect the power pack to your “surge” UPS outlet. Just connect the + terminal to selected input (remember to include in your settings), while the - terminal to...
  9. E

    Alarm input for missing power?

    If you plug a 120Vac relay directly to “surge only” output of the UPS, the relay will change state during power failure. Likewise, use the relay contacts to interface your NVR Edit: understand your approach to use the power adapter will work as well, probably no need for a separate relay...
  10. E

    I have an application for a camera (vehicle, not security related)

    totally agree with wittaj, install an analog (wired) system https://www.camerasource.com/5-commercial-grade-monitor-with-utv-dual-mount-camera
  11. E

    Are there any IP Cameras with stereo input?

    most semi-pro ptz are designed for indoor/conference applications. This particular ptz is only 1.8”. You should look for professional broadcast series, like mentioned by looney2ns https://www.adorama.com/aidaptz4k30w.html
  12. E

    Are there any IP Cameras with stereo input?

    not sure if you are looking for this type of camera, but for live-streaming, you may consider the Aida HD-100A https://www.amazon.com/HD-100A-Imaging-Camera-Stereo-Audio/dp/B082J9376G#aw-udpv3-customer-reviews_feature_div
  13. E

    Anyone used the Dahua pinhole camera(s)?

    hidden installation, also planning on buying dahua pinhole, but model ipc-hum4431s-14 https://store.ipcamtalk.com/shop/ultra-smart-4mp-fixed-focal-pinhole-network-camera，ipc-hum4431s-l4/
  14. E

    A man can dream, can't he?

    Here's the full story: https://www.stltoday.com/news/local/crime-and-courts/video-shows-st-louis-county-police-car-hitting-man-after-he-fired-at-officers/article_84107686-9d1f-5377-bdde-426278be69f0.html
  15. E

    A man can dream, can't he?

    they will latter call police brutality. Actually, the run-away guy was using lethal force, while the agents was just protecting themselves
  16. E

    Looking for a quality LED illuminator

    Two hated words, BestBuy and Home Depot. My wife complaints every time I mention to visit Home Depot. My favorite aisle, the electrical and spot lights section. Take a look at your local HD.
  17. E

    Can't seem to get HDW2431TM-AS-S2 to fit to PFB203W wall bracket

    Interesting. The mounting scheme looks quite different from the usual setup. I cannot see the frontal tab from your photo. Usually that is the bracket attached to the wall mount (fixed screws)
  18. E

    Spot Monitors Via Network

    mirabox hdmi over ip extender. Yes, it need a separated network switch (giga recommended), used from one (tx) to multiple (rx). In my case, the weakest link is the power pack, changed a couple in almost 6 years of service (12Vdc instead of the original 5Vdc). It needs power at both ends. New...
  19. E

    MetaNVR64

    https://www.ametagroup.com/Product/Video_Surveillance/Network-Video-Records Dahua OEM!
  20. E

    Camplayer, an open source IP camera viewer / grid video player / video wall for the Raspberry Pi

    Not necessarily what you are looking for, but I found interesting the following video
  21. E

    dahua starlight ip camera on a boat?

    Not sure if any Dahua starlight camera component is available. Even considering the usage for nighttime only, the constant salty environment will reduce the lifetime of your cameras. There are costly pressurized enclosure, designed for those particular environments. In my case, instead of...
  22. E

    dahua starlight ip camera on a boat?

    100% agree with TonyR comments. Besides, a boat camera will be exposed to harsh elements, like salty sea water (even in lake will expose to sprayed water). You mentioned it will be installed in the frontal part of the boat. You may want to install/change all the exposed screws to...
  23. E

    PFA121 threaded plug

    maybe this could provide a correlation between both measurements
  24. E

    junction box newbie, cable glands/connector size?

    If you live in UK, and need to order, probably will be easier to go through aliexpress https://a.aliexpress.com/_mPpvoKU
  25. E

    junction box newbie, cable glands/connector size?

    There are different sizes for cable glands. A single CAT-5e is about 0.5 + MM in diameter, in which the gland spec’s is PG-9 (check included photo for different sizes). The included plastic caps (hole through is about 20 MM), an will requiere an adapter/reducer, based in your cable count/PG...
  26. E

    How could I send an output signal when a camera detects a noise that exceeds a certain threshold?

    What about designing a “noise-free” fecal crossbow arrow? Use an auto-tracking PTZ cam, mounting the ballista at bottom. The car horn will activate a shoot round of fecal balls. Loading the balls are the most difficult part. The video will gain popularity in YT (you may even monetize)
  27. E

    How could I send an output signal when a camera detects a noise that exceeds a certain threshold?

    Normally, a typical car horn operates at a frequency between 200~500 Hz. If you pass only those frequencies (low pass, design/testing require), while blocking all others, there is a good chance to avoid false alarms. The circuitry will include a microphone, signal filtering, signal...
  28. E

    How could I send an output signal when a camera detects a noise that exceeds a certain threshold?

    My recommendation will be installing a sign in front of your house with the following message: “DONT HONK THE HORN, YOUR MOTHER COULD BE SLEEPING HERE”
  29. E

    How could I send an output signal when a camera detects a noise that exceeds a certain threshold?

    I will consider a different approach, than blasting a train horn at midnight. The solution could “backfire” for higher curiosity of drivers to wake-up the entire neighbor. Calling the police, even only during daytime, maybe difficult to prove malicious in a court of law
  30. E

    Help with Alarm I/O Wires

    jzobel particular doorbell is a single tone 12v ding-dong device. The yellow/green cables are only for triggering a single door. If you need to add a second door, a mechanical doorbell (16Vac transformer) could do the job...
Top Bottom