ขาย กริ่งประตูดิจิตอล ไร้สาย พร้อมเซ็นเซอร์สัญญาณเตือนอินฟาเรด PIR ราคาที่ดีที่สุด

Wireless Digital Doorbell with Transmitter Receiver with PIR Sensor Infrared Induction Alarm Welcome Guests Body Door Bell with 38 Songs If you want to see more, please click #cologo Features: *Wireless human induction,using super quality imported probe,not omission,send audible sound,alerting you that somebody is approaching. *Wide usage places including supermarkets, offices, convenience stores, shops, hotels, factories and homes and other places. *Special design and beautiful appearance.Simple operation for attaching it anywhere you want. *Working range up to 70 meters between receiver and transmitter,which allows you to place it a good distance from the receiver to warn you of arrival and departure of family members, unwanted guests or anyone who visits your home or business. *Super speaker, with 38 music optional.3 level of adjustable sound volume,press the button and adjust the volume. Specifications: Working Voltage of the receiver: 110-240V Working Voltage of the transmitter: 4.5V (3*AAA battery not included) Music: 38 music optional Volume:three levels (high,medium and low,audio and silence can be set) Working distance:up to 70 meters Transmitter induction distance:3-7 meters Receiver Quantity:1 Transmitter Quantity:1 Receiver Size:76*80*33mm Transmitter Size: 80*59*45mm Package Information: Package Size:Approach.10*8.8*8.8cm/3.94*3.46*3.46in  Package Weight:Approach.160g/5.64oz Package List: 1* EU Indoor Unit(Receiver) 1* Outdoor Unit(Transmitter) 1*Bag of Screws 1*Bag of Mounting Bracket 1* User Manual(English)