Encrypted Wireless Motion Sensor
Encrypted wireless motion sensors can make a very nice addition to your wireless security system. These device transmit across secure signals that cannot be easily hacked or taken over. Many of these sensors also use techniques to combat against RF jamming that can stop non-encrypted from working properly. But using encrypted sensors can provide you with peace of mind in knowing that your sensors are extremely unlikely to be disabled by a savvy intruder. Remember, that you will need to choose encrypted wireless motion sensors that are compatible with your security system.
Other than using encrypted wireless communication, encrypted motion sensors are not very different from non-encrypted motion sensors. These devices use the same techniques for detecting movement. The typical motion sensor uses passive infrared (PIR) technology to sense motion. This involves looking for changes in infrared (IR) energy that occur with movement. Every person and object gives off a small amount of IR energy. When a new person or object comes within the sensor's field of view, it will detect their IR energy. The sensor will know that someone is present, and it will alert the alarm system..
There are also some encrypted motion sensors that use microwave detection, in addition to PIR sensing. These are known as dual-tech motion sensors. A dual-tech motion sensor will also send out continuous microwave signals. These signals will bounce off of objects in the room and return to the sensor in a consistent pattern. If this pattern changes due to a new person or object coming into the sensor's field of view, then the microwave sensor for the dual-tech motion will be activated. A dual-tech motion sensor will only activate and alert the system if both its PIR sensor and its microwave sensor are triggered. This prevents false alarms by using multiple detection methods to verify motion. Dual-tech motion sensors often offer pet immunity to prevent small animals from setting off the sensor.
There are multiple types of encryption that can be used with encrypted sensors. Some sensors only using rolling code encryption. But an even more secure type of encryption is AES, which is not prone to any RF jamming techniques. Check the specifications for your encrypted wireless motion sensor to find out what type of encryption it uses. You will also want to make sure that you choose motion sensors that are compatible with your system. A wireless system will usually only support sensors at a specific frequency. Check compatibility for your system to make sure that the motion sensors you select will work properly. Most wireless motion sensors can be very easily enrolled with a system.