Nowadays, security is the most problem for homes, offices, schools, industries, etc. electronic security system provides us better security for our needs. Wireless burglar alarm system is better than wired system; because, wired alarm system needs more hardware components, high power, wire connection, and it requires more money. Wireless security systems use radio frequency signal to detect any object; the waves are spread inside the home and the reflected signal from any object will gives information about the presence of an object. Standard alarm system requires more wire connection and it may confuse the circuit; so, this system is better than wired system. If you fix the wireless alarm system in your home means, you need not hire an electrician; you can fix it at anywhere you want. Keypad and sensor are the major component in wireless burglar alarm system. The sensor will receives the reflected signal and send it to control circuit; depends on the sensor signal control circuit will produces a sound. Control circuit has handled by remote keys or control keypad. We can use different type of sensor depends on the application such as contact sensor, magnetic sensor, gas sensor, fire sensor etc. Some sensors are inbuilt in to the wireless system and surveillance cameras are easily available in electronic shops.