Беспроводной звонок дверь, дверь звонок

Wireless door bell Item No. : BD-005 Name of commodity:DC Power Wireless Door Bell Size of Receiver(cm):10.3*3.3*7 Size of Transmitter(cm):7.7*3.2*2.2 Inner package: Double Blister + Printed Card QTY per carton:24 sets Carton size(cm):41.5*34*23 MOQ: 1000 sets Frequency: 315MHz / 433MHz This product includes one transmitter & one receiver; 2*AA 1.5V Alkaline batteries for Receiver; 1*23A 12V Alkaline battery for Transmitter; 24kinds of optional chimes; Water-proof remote controller (transmitter) With CE certificate; With digital codes to avoid disturb;