Wireless Welcome Doorbell with Infrared Motion Detector, Split Design, Multi-Function Door Chime for Home Security

A VARIETY OF FUNCTIONS: This doorbell offers five modes including welcome, doorbell, alarm, color light, and night light. It features a power-off memory function, so the battery is automatically backed up during a power cut, and you'll be reminded to replace the battery when it runs low. It can learn up to 32 wireless probe accessories like infrared, door magnet, and vibration sensors, plus 8 remote controllers, offering great flexibility. INFRARED DETECTION: The infrared sensor covers a 100-degree horizontal and 15-degree vertical detection angle, with a sensing range of 2-8m/6.6-26.2ft. LONG-DISTANCE USE: It supports long-distance transmission up to 280m/918.6ft in open areas, making it ideal for larger spaces and higher floors. A dedicated speaker provides independent alarms with a maximum volume of 113dB, effectively deterring intruders. MULTIPLE VOLUME AND MUSIC: You can adjust 4 volume levels, and the battery memory feature adds convenience. It includes an 8-chord music chip and a 40mm speaker for clearer, louder sound. With 16 selectable doorbell melodies, you can customize it to your preference. Feature: 1. Colorful LED lights with 4 brightness levels, and different colors can distinguish multiple entrances, making it more eye-catching and intelligent. 2. HD MP3 voice prompts guide you through all modes and operations, simplifying use. 3. The universal adjustment base allows the infrared sensor window to be tilted 180 degrees left or right and rotated 360 degrees. 4. No card needed—it has a built-in U disk for DIY sound synthesis or recording, and a mini USB port connects to a computer for downloads. 5. With power-off memory, the battery is automatically backed up during outages, and low-power reminders ensure timely battery replacement. Specification: Material: ABS Power Supply: Receiver: 3 x AA Batteries (Not Included) / USB 5.0V Power Adapter (Not Included) Infrared Detector: 3 x AAA Batteries (Not Included) / USB 5.0V Power Adapter (not Included) Transmit and Receive Frequency: 433MHz Working Temperature: Receiver: -10-60℃ Infrared Detector: -10-33℃ Receiver Battery: Available 5-7 Months (Calculated 30 Times Per Day) Infrared Detector Battery: Available for 5-7 Months (Calculated 30 Times Per Day) Package List: 1 x Receiver 1 x Infrared Detector 1 x Double-Sided Tape 2 x Screw 2 x Infrared Detector Mounting Base 1 x Instruction