Elebinke Door and Window Alarm, Door/Window Sensor with 120db Alarm Audible up to 500 Ft (150M) Touching Vibration Triggered Security Alarm for Travel Hotel Apartment Home Security

When you turn it on there is a red blinking light, this will continue to blink for about 10 seconds which allows you to set it and move around before it is armed. Once the light stops blinking it is ready. Hang the alarm on the door handle. When someone opens the door or touches the door handle, the alarm will send out 120dB alarm volume to prompt someone to invade. The alarm sound can be heard outside 500ft Parameters: Name: door handle alarm Material: plastic Color: white Net weight: 60g Alarm volume: 120dB Power supply mode: 3 * AAA battery (not included) Packing list: alarm * 1 English manual * 1 1. Open the back cover and install the battery 2. Set the required sensitivity gear, generally medium 3. Turn on the side switch and select the desired mode chime & alarm 4. When the red light flashes for 30 seconds, the alarm will stop automatically (it can be turned off manually) after continuously giving an alarm for about 1 minute when the vibration is detected