Product name: Human body sensor alarm | Human body contact sensor burglar alarm | Door handle sensor burglar alarm Product introduction: After the lead wire of the human touch sensor alarm is hung on the door handle or door lock, when someone touches the door handle or uses the master key to steal the door lock, the sensor alarm will sound the alarm to scare away the thief or remind the owner Pay attention to the movement of people coming. Technical Parameters Working voltage: DC 6F22 9V battery (not included in the machine, it needs to be provided by yourself) Alarm sound pressure: 120dB Induction method: human body electric field induction Scope of application: wooden doors, windows Installation method: hanging on door locks, windows Product size: 1015526mm Instructions for use: Open the battery cover in the direction of the arrow behind the touch sensor alarm, and insert the battery (pay attention to the positive and negative poles: the positive and negative labels are marked in the battery compartment, and the 9V battery is also marked, do not install it in reverse). Turn the switch up to the ON position, and the machine will automatically enter the alarm standby state after 5 seconds of warm-up. When the thief touches or picks the lock, it will sound an alarm and notify you to check in time and take corresponding measures to ensure that you and your family. safety of life and property. When you are on a business trip or traveling and staying in a hotel, you can hang the product on the door lock of your house to protect you. When you check out, you can remove it for next use.