Product Description: 1. 38 music and sound the alarm is optional. The music can change at will, the sound volume can be adjusted; 2. The human body infrared thermal sensor, day and night, can be in normal use, and is not affected by environment. 3. More closer to the lives of consumers, office buildings, shops, factories, Home Furnishing various occasions can be used. 4. Note: the alarm 95 decibel not very loudly, can not adjust the volume and size, is more appropriate to remind, alarm shop! Specification: * Effective alarming distance: 5m -10m * Power supply: 4.5V DC, verse 3 x AAA 1.5V battery (NOT INCLUDED), external 9V power supply * Boot delay: 5 seconds * Sound pressure: 95 db + / - 5 db * Effective angle :110 degree * Alarming sound depth: 75 - 95 decibels * Measuring point/range: Angle 60 degree ~ 110 degree * Power supply: 3 x 1.5v AA batteries * Music:38music and vocals optional * Color: White Installation and use: 1. The bracket screwed to the location where you want to install. 2. The battery cover on the back door in the direction of the arrow pushed , into three sections AAA1.5V battery (Alkaline batteries are recommended), replace the battery cover. 3. The doorbell switch to the side of the voice files or music files , press the black button to select your choice of music favorite music. 4. The doorbell installed by a bayonet on the stand, when a visitor enters , electronic welcoming doorbell will issue before you choose a good sound. Package content: - 1 x Wireless Welcome Door Bell - 2 x Screw - 2 x Nut
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