High performance 5V-delay alarm, buzzer, modules, better than the 555 chip

Product Description

Application:
Vibration burglar alarm delay , earthquake alarm, then normally closed sensor module can do all sorts of alarm is triggered .

Product Features :
1 made ??of imported high -quality delay chip design , the performance is far superior to the 555 chip ;
2.provide four kinds of power input wiring to meet the diverse needs of the default delivery of the first one, there are other needs please take a message ;
3. Protection against power reversal protection diode , the effective protection product ;
4 with a 5V buzzer for alarm active role ;
5 has a delay adjustment potentiometer clockwise to adjust time longer ;

Technical parameters:
Input voltage : 5V DC input current : more than 100mA
Power consumption : 0.5W
The default delay :1 -190 seconds adjustable ( other ranges please contact the seller to order )

Product description:
Please refer to the following product wiring illustration ;
This module is normally open trigger , can normally closed type vibration sensors, micro-switches , etc. triggered off when the switch is momentary , the module will start the timer, light green LED, buzzer alarm buzzer , ending time, the green LED off, stop the alarm buzzer ;

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