An Expandable Transistor Based Burglar Alarm

This transistor-based alarm system includes automatic exit and entry delays, a timed bell cut-off, and a system reset feature. In addition to the exit/entry zone, the basic alarm board is equipped with one instant zone, which is sufficient for many applications. The modular design allows for easy expansion, enabling the addition of multiple zones to the system. Details regarding a four-zone expansion module are available.

The transistor-based alarm system is designed to enhance security through its intelligent features. The automatic exit and entry delays provide users with sufficient time to exit or enter the protected area without triggering the alarm. This is particularly useful in residential and commercial settings where users may need to disarm the system upon entry or exit.

The timed bell cut-off feature ensures that the alarm will sound for a predetermined duration, after which it will automatically deactivate, reducing the risk of nuisance alarms. This feature is crucial in preventing alarm fatigue among users and ensuring that alarms are taken seriously when they occur.

The inclusion of an instant zone allows for immediate detection of unauthorized access in critical areas, such as entry points or high-value asset locations. This zone operates without delays, ensuring that any breach is promptly reported.

The modular design of the alarm system is a significant advantage, as it allows for customization based on the specific security needs of the user. Additional zones can be integrated into the system, providing flexibility and scalability. The four-zone expansion module offers an easy solution for users looking to enhance their security coverage, accommodating multiple entry points or sensitive areas.

Overall, this transistor-based alarm system is a versatile and effective solution for security, combining essential features with the ability to expand as needed.This transistor based alarm features automatic Exit and Entry delays - together with a timed Bell Cut-off and system Reset. Along with the Exit/Entry zone - the basic alarm board has one Instant Zone. This will be adequate in many situations. However - the modular design means that it`s easy to add as many zones as you like to the system. Details of a Four-Zone expansion module are provided 🔗 External reference