Transmission range of up to 150 feet away from the main panel unobstructed, which allows you to easily arm and disarm your system. Arms in home or away mode, disarms, or triggers a panic alarm all from the touch of a button. Turn off the alarm before you even enter the house LED indicator light lets you know if the battery is operational. Audible signal confirmation. Keychain ring for easy and convenient carrying. Sliding cover to prevent any accidental pressing. Battery operated and compatible with all KERUI Alarm System., Manufacturer: KERUI