Durable & Easy Installation:Securely mounts with double-sided tape or screws, suitable for various premises. Infrared Sensor & Wide-Angle Detection:Infrared sensor with a 120° detection angle ensures reliable doorbell activation. Multi-Lingual Welcome Modes:11 national languages and multiple prompt tones for a personalized guest experience. Adjustable Volume & Mute Function:4-level adjustable volume with mute option for customizable sound control. Versatile Power Options:USB power cord and 3*AAA battery compatibility for flexible installation and use. Description Function Introduction Power supply :5V Battery: 3* AAA alkaline batteries (batteries are not included) Induction range: 2-7 meters Volume: 4 levels adjustable (Adjustable mute only flashes) Induction method : infrared sensor triggered Ringtones:Welcome mode 11 national languages, multiple prompts tones Volume level: 0-100DB Detection Angle: 120° The main function: Automatic body sensing , ultra-long , wide-angle detection. Adjustable direction (with stand). Installation : Secure with double-sided tape or screws. Installation height:1.5-3m Size:95mm*68mm
