Alarm for security equipment

Overview
A member of the security equipment family, an alarm, is an electronic product that reminds or warns us that we should take some action in the form of sound, light, air pressure, etc. Generally consists of two parts, an "electronic valve controller" shaped like a car horn, and a "alarm" shaped like a doorbell. It is widely used in the fields of system failure, safety precautions, transportation, medical rescue, emergency disaster relief, induction detection, etc. It is a partner to ensure the safety of people's production and life.

Function realization
In daily life, people use car alarms to prevent vehicle theft.
Use gas sensor alarm to detect the leakage of dangerous gases such as coal gas: the detector can detect the leakage of gas, liquefied petroleum gas, natural gas and other gases, and alarm in time;
Use smoke detectors to prevent fire hazards: use smoke detectors to detect indoor smoke in a timely manner and issue fire alarms;
Anti-theft: If there are illegal burglars, they will immediately send an alarm signal through the high-decibel speaker of the host or the connected alarm horn, and send an alarm signal to the outside;
For help: it can be used to call for help from the elderly and children in the family for accidents and emergency calls;
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1. Whether it has the national 3C compulsory certification (quality assurance)
2. Whether it has the quality assurance with low false positive promise (reduce false positives)
3. Whether there is a backup power supply for normal operation 24 hours after power failure (work guarantee)
4. Whether there is a wireless forwarding alarm function of anti-vandalism and anti-thread cutting (anti-vandalism)
Knowing this, do you want to install an alarm on your home immediately, then act now?