Aktivstar Motion Sensor with Sound Alarm for Door/Entry/Home and Commerces, Wireless Doorbell, Security Alarm, Portable Presence Detector, 36 Melodies

• 🚩[Entry Alert] Homeowners or business owners can use the doorbell to be alerted when people enter or exit. Use it to detect visitors through the front or back door. The portable design is easy to install in homes, offices, shops and can also be used for mailboxes, garages, entrances and more.
• ✍[Motion Sensor Distance]The detection distance of the infrared device is 2-8 meters.The remote control distance in the open area is up to 280 meters, which can meet the needs of various places.
• 🎮[Ringtone] provides 36 different ringtone options from melodies to a simple basic buzz. Customize your doorbell sound according to your preferences whenever you want. With 4 levels of volume control, you will never have to miss a visitor or client's entry.
• ✔️[Reduce Errors]Using ASK Superheterodyne with the same frequency and different code technology, the error rate is only 1/10000, which can effectively prevent mutual interference and ignition failures with neighbors
• ❷[Wire-Free] Cordless wall installation. EI Wireless Doorbell Sensor Battery Operated and Plug for quick and easy use.

Installation Steps 1.Before installation, prepare an electric drill, a screwdriver and three AAA batteries. 2. Install the receiver. Simply plug the receiver into an outlet. Choose your desired doorbell tone and check if the operating areas you choose are correct. 3. Install the motion sensor, place the prepared batteries and turn on the machine, use a drill to drill a hole in the wall and then fix the motion sensor holder with screws and anchors. Helpful Tips Do not place the detector in areas where the wind will move it, also try to keep the detective on a clear path to the receiver, so that you can get optimal performance. Package Contents 1 x receiver. 1 x PIR sensor. 1 x user manual (English language not guaranteed). 1 x Double Sided Patch 2 x screws and wall plugs. (3 x AAA battery is not included in the package)