Wireless PIR motion sensor security detector alarm buzzer, welcome buzzer, mailbox alert, motion sensor buzzer with night light

【5-mode motion sensor alarm】 Featuring welcome, ring, alarm, color light, and lighting modes, this door alarm sensor offers reliable protection for homes, businesses, or other spaces. With LED indicators and a memory function, the receiver automatically saves your last selected settings.【36 ringtones with 4 volume levels up to 113dB】Provides Welcome, Ringtone, and Alarm modes with 4 adjustable volume levels. Choose from 36 ringtones, including 5 perfect Welcome ringtones for stores. In Alarm mode, a 30-second alert provides a clear and effective notification.【4 adjustable brightness levels in silent mode】 The Color Light and Lighting modes operate silently with 4 adjustable brightness levels, ideal for people with hearing impairments or households with a sleeping baby. The Color Light mode also offers 4 selectable colors.【280m Wireless Motion Sensor Alarm】When the infrared motion sensor detects movement, the receiver emits a loud alarm of up to 113dB, instantly alerting you to activity around your home, shop, or office. With a wireless range of up to 280m (in open space), it offers wide coverage to help protect your property and improve security.【Expandable home alarm system】Flexible design to suit your actual needs. You can choose the number of sensors and receivers you need, which can be freely combined to assign specific lights to each device. Each receiver can work with up to 32 motion sensors and 8 remote controls.【Easy to install and use】The motion sensor is powered by 3 AAA alkaline batteries, while the receiver uses 3 AA alkaline batteries (batteries and USB-C cable not included). Each unit is pre-programmed before shipping for quick setup. This indoor motion sensor alarm system can be easily mounted anywhere in your home; installation takes only a few minutes.