Security alarm function:
1.In arm mode, when detecting door or window is open, it will give out alarm for 30 seconds,then stop for 15 seconds, then another 30 seconds again until the user press the key to exit the arm mode.
2. Doorbell function: Push the "doorbell"button,the alarm will make a sound"DingDong"when the door or window is open once.
3. Emergence function: Push the "emergence"button, it will give out alarm for 30 seconds.
4. Add more remote: One receiver can add 8 remotes.
5. Low battery indocate: LED would flash once per seconds when the battery is low.