General description The BeiLan Wireless Doorbell Electric Door Chime Kit includes 1 receiver and 1 PIR motion detector sensor, providing a reliable visitor alert and security alarm system. It features 38 melodies and 3 volume levels, making it suitable for various environments such as homes, offices, stores, and hotels. Technical specifications Effective working range of receiver: up to 70 meters PIR motion detection distance: 3-7 meters Power supply for PIR motion detector: 3 AAA batteries (not included) Usage Ideal for alerting business owners when customers enter the store Can be used as a signal for pets to enter or exit Applications include entry alert, burglar alarm, passageway alarm, critter detector, car alarm (indoor), warehouse monitor, closet alarm, garage and tool shed monitor, mailbox sensor, and front door or walkway detection Other information 2 working modes: single LED light flashing or both sound and LED flashing 3 levels of volume adjustment: High, Medium, or Low 38