Check the LACORAMO door alarm within 50 feet 4 buttons are designed to change the arming, disarming, doorbell, door not closed alarm mode, unclosed door reminder mode, and SOS mode. The lightweight, portable design can help you take it anywhere Powered by the CR2032 battery, low power consumption guarantees standby for about 1 year. What do you get? The package list includes 2 remote controls. This item is not shipped from Amazon. Therefore, it takes about 20 days to receive.