Re: Burglar Alarm System

HI inakay,

Are those adaptors safe to leave switched on (to sockets) for days? Like those emergency lights where they're left with sockets plugged for charging..

Re: Burglar Alarm System

HI inakay,

Are those adaptors safe to leave switched on (to sockets) for days? Like those emergency lights where they're left with sockets plugged for charging..

hi everyone! i'm a new member of this forum and i find myself so lucky to have found this site.

anyway, this thread got my attention.

i have a couple of questions regarding home burglar alarm system.
1. just like jso427, is it safe to leave the plugs for days?
2. can motion alarms be triggered by a passing lizard or cockroach in front of it?

and lastly, i don't know if this is a known trick, but i've been thinking for a while that car alarms may also be used to call attention. you can instruct your wife & kids to push the "find(or whatever is its equivalent)" button whenever they are threatened at home (esp. at night). that way, the car outside (your car of course) will sound & hopefully it will call your neighbors' attention.

Re: Burglar Alarm System

Serves me right for buying cheap. The security lights I mentioned BOTH died. Brand is NOVA - do not buy these.

As I mentioned I bought these lights a week or two ago. The first stopped working last week and the second shortly followed. Here is what I found inside:

The last image shows the trace that burned out (color brown). This connects the relay to the bulb. Obviously the trace could not handle the current. The case is the same for both lamps.

Now I have to DIY a small power supply and a better output stage. Hopefully, the sensor circuitry is still working.

Re: Burglar Alarm System

Serves me right for buying cheap. The security lights I mentioned BOTH died. Brand is NOVA - do not buy these.

thanks for the warning. by the way, you could have brought it back for replacement. however, you've opened it already so they might not honor the warranty anymore.

Re: Burglar Alarm System

True except for some reason the receipt was not to be found >:(.

Re: Burglar Alarm System

wow toasted.

if you can find a security light with a RAB brand that would be better.

Re: Burglar Alarm System

Serves me right for buying cheap. The security lights I mentioned BOTH died. Brand is NOVA - do not buy these.

As I mentioned I bought these lights a week or two ago. The first stopped working last week and the second shortly followed. Here is what I found inside:

The last image shows the trace that burned out (color brown). This connects the relay to the bulb. Obviously the trace could not handle the current. The case is the same for both lamps.

Now I have to DIY a small power supply and a better output stage. Hopefully, the sensor circuitry is still working.

Hi Lncc,

Thanks for introducing me to this site.
How come the PCB got burnt? The burnt trace was on the control side or the output side of the relay? Quite weird how these things get into the market.

Re: Burglar Alarm System

You're most welcome Bro.

This was a few years ago so I honestly can't remember exactly. I think it had something to do with the circuitry's power being developed through a resistor/zener combo rather than a transformer. El cheapo!

The proper way to do direct off-the-line step-down is with a switching regulator, IMHO.

Re: Burglar Alarm System

Now I have the best kind of alarm: a Rottweiler AND a Doberman.