Alarm Indicator
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 Low Voltage Buzzer Alarm Indicator 2S 3s Lipo Battery $1.94 Time Remaining: 14d 4h 14m Buy It Now for only: $1.94 |
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 74V 111V RC Lipo Battery low voltage Alarm Indicator $1.94 Time Remaining: 21d 4h 17m Buy It Now for only: $1.94 |
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 5X 74V 111V Lipo Battery low voltage Alarm Indicator $9.07 Time Remaining: 14d 4h 16m Buy It Now for only: $9.07 |
 1 8S Battery Tester Low Voltage Buzzer Alarm Indicator $2.91 Time Remaining: 16d 3h 10m Buy It Now for only: $2.91 |
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 1 8S Lion Battery Tester 2in1 Low Voltage Buzzer Alarm Indicator Checker New $0.01 Time Remaining: 1d 11h 18m |
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 Lipo Battery low voltage buzzer Indicator alarm RC Car $3.88 Time Remaining: 24d 18h 5m Buy It Now for only: $3.88 |
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 74V 148V RC Lipo Battery low voltage Alarm Indicator $9.30 Time Remaining: 9d 58m Buy It Now for only: $9.30 |
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 RC 1S 6S Low Lipo Battery Voltage Indicator Checker Tester Alarm 28V 252V New $3.07 Time Remaining: 29d 23h 13m Buy It Now for only: $3.07 |
 74V 111V Lipo Battery low voltage Alarm Indicator 2S 3S Tester Checker $1.94 Time Remaining: 13d 20h 5m Buy It Now for only: $1.94 |
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 Brand New 1 8S Lipo Battery Low Voltage Monitor LED IndicatorAlarm I18STB $9.99 Time Remaining: 20h 19m Buy It Now for only: $9.99 |
 RC helicopter Lipo battery Tester portable Low Voltage meter alarm Indicator $5.00 Time Remaining: 17d 20h 11m Buy It Now for only: $5.00 |
 5 Lipo Battery low voltage Buzzer Alarm Indicator Checker 2S 3S Cells 74V 111V $9.07 Time Remaining: 29d 2h 3m Buy It Now for only: $9.07 |
 74V 148V RC Lipo Battery Low Voltage Tester Checker Alarm Indicator New $6.78 Time Remaining: 24d 2h 1m Buy It Now for only: $6.78 |
 New Lipo Battery Portable Voltage Meter Alarm Indicator $3.32 Time Remaining: 28d 2h 53m Buy It Now for only: $3.32 |
 1 8S Battery Tester Low Voltage Buzzer Alarm Indicator NEW $3.00 Time Remaining: 7d 15h 27m Buy It Now for only: $3.00 |
 New Battery low voltage Alarm Indicator RC Lipo battery low voltage buzzer alarm $3.32 Time Remaining: 28d 2h 54m Buy It Now for only: $3.32 |
 BVM 8S 1 8 Cell LCD Battery Voltage Meter Tester Indicator Alarm LiPo NiCd NiMH $14.59 Time Remaining: 27d 17h 4m Buy It Now for only: $14.59 |
 Low Voltage Buzzer Alarm Indicator 2s 4s Lipo Battery $2.19 Time Remaining: 2h 49m Buy It Now for only: $2.19 |
 2X 74V 148V RC Lipo Battery Low Voltage Tester Checker Alarm Indicator New $9.88 Time Remaining: 24d 1h 54m Buy It Now for only: $9.88 |
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 New Battery low voltage Alarm Indicator RC Lipo battery low voltage buzzer alarm $3.20 Time Remaining: 27d 20h 46m Buy It Now for only: $3.20 |
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 Hot 1 8S Battery Tester Low Voltage Buzzer Alarm Indicator Q3 $3.18 Time Remaining: 1d 21h 32m |
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 74V 111V RC Lipo Battery low voltage Alarm Indicator $0.99 Time Remaining: 14d 2h 27m Buy It Now for only: $0.99 |
 2X 74V 111V Lipo Battery low voltage Alarm Indicator Checker Tester $3.97 Time Remaining: 14d 4h 21m Buy It Now for only: $3.97 |
 2 6S LiPo LiFe Battery Voltage Tester Low Volt Alarm Buzzer Led Indicator New $13.99 Time Remaining: 26d 19h 30m Buy It Now for only: $13.99 |
 2 4S 2in1 Low Lipo Battery LED Voltage Meter Tester Alarm Indicator Tracker $3.98 Time Remaining: 29d 2h 46m Buy It Now for only: $3.98 |
 5X RC Lipo Battery Buzzer low voltage Alarm Indicator $9.99 Time Remaining: 5d 19h 56m Buy It Now for only: $9.99 |
 1 8S Lion Battery Tester Low Voltage Meter Buzzer Alarm 2 in 1 Indicator Checker $3.89 Time Remaining: 2d 16h 25m Buy It Now for only: $3.89 |
 1S 6S Low Voltage Buzzer Alarm LED Lipo Battery Voltage Indicator Checker Tester $2.90 Time Remaining: 3d 3h 40m Buy It Now for only: $2.90 |
 2X 74V 111V Lipo Battery low voltage Alarm Indicator Checker Tester $3.97 Time Remaining: 29d 2h 3m Buy It Now for only: $3.97 |
 Low Voltage Buzzer Alarm Indicator 2s 4s Lipo Battery $0.99 Time Remaining: 1d 20h 18m Buy It Now for only: $0.99 |
 2in1 RC 2S 8S LIPO Battery Low Voltage LED Meter Tester Buzzer Alarm Indicator $3.97 Time Remaining: 22d 3h 33m Buy It Now for only: $3.97 |
 Low Voltage Buzzer Alarm Dual Speaker BB Annunciator Indicator 2S 4S Battery RC $1.00 Time Remaining: 19d 11h 5m Buy It Now for only: $1.00 |
 74V 111V RC Lipo Battery voltage Alarm Indicator 761 $3.99 Time Remaining: 12d 11h 4m Buy It Now for only: $3.99 |
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 1 8S LiPo Li ion Battery Voltage Tester Indicator Low Volt Alarm Buzzer Checker $6.99 Time Remaining: 26d 19h 30m Buy It Now for only: $6.99 |
 1 8S Low Voltage Buzzer Alarm LED Lipo Battery Voltage Indicator Checker Tester $3.30 Time Remaining: 3d 3h 40m Buy It Now for only: $3.30 |
 74V 148V RC helicopter Lipo Battery Low Voltage Tester Alarm Indicator $4.00 Time Remaining: 17d 20h 11m Buy It Now for only: $4.00 |
 74V 148V RC Lipo Battery low voltage Alarm Indicator $4.65 Time Remaining: 1d 6h 52m Buy It Now for only: $4.65 |
 74V 111V RC Lipo Battery low voltage Alarm Indicator $4.67 Time Remaining: 7d 9h 14m Buy It Now for only: $4.67 |
 1 8S Lion Battery Tester 2in1 Low Voltage Buzzer Alarm Indicator Checker New $0.01 Time Remaining: 2d 18h 18m |
 74V 111V RC Lipo Battery low voltage Alarm Indicator $2.29 Time Remaining: 27d 20h 43m Buy It Now for only: $2.29 |
 Low Voltage Buzzer Alarm Indicator 2s 4s Lipo Battery $0.99 Time Remaining: 6d 58m Buy It Now for only: $0.99 |
 10X Lipo Battery low voltage buzzer Indicator alarm RC $18.00 Time Remaining: 22d 4h 5m Buy It Now for only: $18.00 |
 2X 74V 148V Lipo Battery low voltage Alarm Indicator $3.97 Time Remaining: 26d 2h 10m Buy It Now for only: $3.97 |
 2S 4S Lipo Battery Buzzer Alarm Low Voltage Indicator $5.29 Time Remaining: 13d 14h 35m Buy It Now for only: $5.29 |
 2 3S RC Lipo Battery Low Voltage Buzzer Alarm Indicator $5.29 Time Remaining: 13d 14h 35m Buy It Now for only: $5.29 |
 2S 6S Lipo Battery Voltage Meter Alarm Tester Indicator $5.29 Time Remaining: 13d 14h 35m Buy It Now for only: $5.29 |
 1S 8S Low Voltage Battery Tester Buzzer Alarm Indicator $7.49 Time Remaining: 17d 5h 47m Buy It Now for only: $7.49 |
 2S 4S Lipo Battery Buzzer Alarm Low Voltage Indicator $5.29 Time Remaining: 17d 5h 48m Buy It Now for only: $5.29 |
 2 3S RC Lipo Battery Low Voltage Buzzer Alarm Indicator $5.29 Time Remaining: 17d 5h 48m Buy It Now for only: $5.29 |
 1S 8S Low Voltage Battery Tester Buzzer Alarm Indicator $7.49 Time Remaining: 13d 14h 34m Buy It Now for only: $7.49 |
 2S 6S Lipo Battery Voltage Meter Alarm Tester Indicator $5.29 Time Remaining: 17d 5h 47m Buy It Now for only: $5.29 |
 2 4S 2in1 Low Lipo Battery LED Voltage Meter Tester Alarm Indicator Tracker $3.98 Time Remaining: 11d 23h 38m Buy It Now for only: $3.98 |
 NEW 74V 111V Lipo Battery low voltage Alarm Indicator $1.94 Time Remaining: 28d 1h 52m Buy It Now for only: $1.94 |
 1 8s RC Lipo Battery low voltage Buzzer Alarm Indicator $12.18 Time Remaining: 1d 2h 11m Buy It Now for only: $12.18 |
 Low Voltage Buzzer Alarm Indicator 2s 4s Lipo Battery $0.99 Time Remaining: 26d 19h 12m Buy It Now for only: $0.99 |
 2X 74V 111V Lipo Battery low voltage Alarm Indicator $0.99 Time Remaining: 3d 1h 55m Buy It Now for only: $0.99 |
 1 8s RC Lipo Battery low voltage Buzzer Alarm Indicator $12.21 Time Remaining: 17d 4h 13m Buy It Now for only: $12.21 |
Alarm Indicator
Security Display Holders For Mobile Phones With Alarm Function
JB-1838B Security display holders for mobile phones With alarm function
With alarm function, this JB-1838B is mainly designed for secure displays of live merchandises such as mobile phones, cameras, mp3/mp4, PDA, GPS, and etc..
Secure & neat displays of these merchandises, interactions between consumers and merchandises are also realized with this product. And thus better promote sales of open merchandises.
Main features
Independent alarm function:
If sensor wire is cut, or sensor is separated from the displayed merchandise, system will give alarm immediately.
Battery backup:
If there is any power cut in sale places, the inbuilt batteries can continue & supply power for support.
Many sensor options:
In view of different display requirements, we prepared different sensors for your option.
Double security:
We can add a reel to this system for double security for the open merchandise (security from both the reel & the electronic sensor)
Off-hook signal output:
If required, off-hook signal output can be available (for driving LCD advertisement system).
Multi - tamper & alarm function:
Tamper security for overall unit, the cover, the holder, and etc..
Charger function for open merchandise:
If this function is added, our system can provide a 4.2V for charging mobile phone battery.
Different switch options:
Key switch (standard) or remote control (need your statement before ordering)
Flexible & Easy installation:
A. Directly fix it by screw
B. Select our T-shaped base & fix system to display desk via a 3M tape.
Technical parameters:
1) Stand height: 13cm (standard) or customize
2) Battery: 3.6V
3) Power adapter: DC-6V (as options), (If required, please make statement before ordering) 4) Maximum battery standby: 1 year
5) Alarm volume: 85-105DB
6) Alarm indication: red LED light twinkling
7) Tamper indication: green LED light twinkling
Low battery indication: LED twinkling with alert given
9) Turn on / off alarm: sound & light indication
10) Holder options: Flat / Chamfer holder (Magnetic), (Please make statement before ordering)
11) Off-hook signal output: Switch signal output, (If required, please make statement before ordering)
12) Charger function: 4.2V mobile charger output, (If required, please make statement before ordering)
13) Alarm switch: Key (standard) / Remote control (as options), (If remote control is required, please make statement before ordering)
14) Reel: Many reels as options, (Please select your preferable item number before ordering)
15) Adhesive base: T-shaped metal mounting base. (If required, please make statement before ordering)
16) Shell material: ABS
About the Author
can someone please explain to me the working of a water level indicator/controller used in tanks?
i need to know what is the mechanism of it.i am talking about the simple one that has a alarm that goes off as soon as the water level is full??
use a simple displacement sensor such as potentiometer or pots...potentiometer is easy to be constructed as a water level indicator...connect it to a buoy...and as the water rises, the connected pots will reduce in resistance...you get the gist...
New ACE I-3 alarm
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