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Alarm

Simple Motorcycle Security Alarm Circuit

Last Updated on February 2, 2024 by Swagatam 4 Comments

motorcycle anti theft alarm circuit diagram using tilt switch and TTP223

In this article I have explained a simple motorcycle ant-theft security alarm circuit using a tilt switch and a TTP223 touch switch. The circuit was requested by Mr. Sergei, as given below. Design Request and Specifications I am a motorcyclist and I would like to ask you to design a simple and cheap alarm system […]

Filed Under: Automobile Electronics, Security and Alarm Tagged With: Alarm, Motorcycle, Security, Simple

Flashlight Activated Burglar Alarm Circuit

Last Updated on January 31, 2024 by Swagatam 3 Comments

flashlight activated burglar alarm circuit

This flashlight triggered burglar alarm circuit will instantly switch ON an alarm as soon as it detects light from the burglar’s torch or flashlight. Burglars and thieves normally set out to steal or rob during nights, when it is completely dark, and depend on a flashlight to investigate the area. Our circuit is setup and […]

Filed Under: Security and Alarm Tagged With: Activated, Alarm, Burglar, Flashlight

Security Alarm Circuit using RCWL-0516 Microwave Radar Sensor

Last Updated on August 22, 2024 by Swagatam 6 Comments

microwave radar intruder security alarm circuit

This security alarm circuit using RCWL-0516 microwave radar motion sensor will detect any moving thing in the restricted area and turn ON an alarm sound. The RCWL-0516 is basically an advanced motion sensor using microwave radar signals. I have already discussed the working of RCWL-0516 elaborately, which you can read for more details. Circuit Description The […]

Filed Under: Security and Alarm Tagged With: 0516, Alarm, Microwave, Radar, RCWL, Security

3 Useful Temperature Alarm Circuits Explained

Last Updated on September 25, 2023 by Swagatam 15 Comments

temperature alarm circuit diagram

In this post I have explained the working of 3 interesting and useful temperature alarm circuits through detailed circuit diagrams. A temperature alarm circuit is basically a device which is designed to detect a temperature threshold and sound an alarm as soon the temperature exceeds over, or drops below the desired temperature detection threshold. 1) […]

Filed Under: Temperature Controllers Tagged With: Alarm, Circuits, Explained, Temperature, Useful

Battery Low Voltage Alarm Circuit

Last Updated on January 3, 2024 by Swagatam 4 Comments

table 1

Despite its simplicity, the Battery Low Voltage Alarm circuit has a very important function. It forewarns you of approaching battery failure so that you may run to the store and get replacement cells before your equipment stops functioning entirely. Because of its compact size and low current need, it may be integrated into the devices […]

Filed Under: Security and Alarm Tagged With: Alarm, Battery, Voltage

Ultrasonic Burglar Alarm Circuit

Last Updated on January 3, 2024 by Swagatam 20 Comments

ultrasonic burglar alarm circuit

An ultrasonic burglar alarm circuit is an electronic device which transmits ultrasonic waves to detect the movement of an intruding person. The ultrasonic waves hit the intruder and the reflected waves are picked up by the circuit. This reflected wave is used to activate a loud alarm which alerts the owner about the presence of […]

Filed Under: Security and Alarm Tagged With: Alarm, Burglar, Ultrasonic

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