Fangrui Product Details 1. Mc-05 130db Remote Door Magnetic Alarm With Light Reminder 2. Seven Major Functions: 3. -volume Adjustment 4. -light Reminder: The Led Light Flashes Once When The Remote Control Button Is Pressed, And The Led Light Keeps Flashing When The Alarm Is Issued 5. -anti-theft Mode 1: Open The Door Immediately With Sound And Light Alarm For 30 Seconds, Even If The Door Is Closed In Advance, The Alarm Will Sound For 30 Seconds 6. -anti-theft Mode 2: Sound And Light Alarm Immediately When The Door Is Opened, And Stop The Alarm When The Door Is Closed 7. -didi Mode: Anti-theft Of Valuables, Open The Door And Make A Beep Alarm Sound 8. -welcome Mode: Dingdong Door Bell, The Door Sensor Emits "dingdong, Dingdong Sound" When The Door Is Opened 9. -sos Mode: Manual Alarm In Case Of Danger, Press The Button (sos) To Give An Audible And Visual Alarm For 30 Seconds 10. Volume: 130 Decibels 11. Material: Abs 12. Remote Control Distance: Greater Than Or Equal To 25 Meters (open Area) 13. Standby Time: About 1 Year 14. Power Supply Mode: Door Sensor Uses 2 X Aaa Batteries (not Included) 15. Host Size: 92 X 42 X 17 Mm