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Darho Wireless Alert Guest Welcome Chime Door Bell PIR Motion Sensor For Shop Entry Home Security Protection Alarm Doorbell
pls know that the welcome alarm is not included any battery or power adapter .Only sell welcome alarm. if you want ,pls buy separate .Lowest price with good quality and short processing time .My friend ,what are you waiting for ? Just buy it .
Finally, I wish you a happy shopping, best wishes
thr angle is 90^