SENIOR WORLD Juvo Door Safety Alarm & Chime - Extremely Loud 120 Db Battery Operated With Password To Alert People & Deter Intruders. Installation 1.Open the battery compartment & insert 3 AAA batteries. Please ensure that the polarity is correct. 2.Set Password (see section on setting password) 3.Close the battery compartment and secure with the screw. 4.Mount the main unit on the Door & the magnetic unit on the door frame or Vice versa as required. Please ensure that there is adequate space on either side of the main unit so that you can access the toggle switch on either side of the main unit to change the settings easily. 5.The magnetic unit can be mounted on either side of the main unit using double sided tape. Please ensure that the arrows on the main unit and magnetic unit are aligned. 6.Please secure the mounting plate (enclosed) using screws for permanent installation. You could also use a double sided tape to affix the mounting plate 7.Please ensure that the gap between the main unit & the magnetic unit is 12 mm or below. Activating or Deactivating your Unit – Extremely important Activating the Unit - You need to activate your unit for the alarm mode to be functional. To activate the Unit, please enter your 4 digit password. When the password is entered correctly, the unit will flash a green light once. If the password is entered incorrectly, the unit will flash a red light 3 times and give a loud beep. Please note that the unit will have to be activated each time you have used your password to either stop a siren or have used your password to deactivate the unit eg when you return home after setting the Unit in away mode. Deactivating the Unit - You can deactivate the Unit by entering your password. When the 4th digit of the password is entered, the unit will respond with 2 beeps and will flash a green light twice. If the code is entered incorrectly, the unit will flash a red light 3 times and give a loud beep. Re-enter the correct code after the light stops flashing.