Беспроводной дверной звонок

Technical Parameters 1) Transmission range: 100m (open area) 2) Frequency: 315MHz and 433MHz 3) Default music: ding dong .....3/16songs 4)with the flash lamp 5)Code of receiver and transmitter could be adjusted to avoid the code crossover with the similar equipment in your neighbourhood. 6)Transmitter uses one12V23A battery 7)Receiver uses2*AA battery 8)Receiver(bell)size(mm):101*60*32 9)Transmitter(button)size(mm):73*34*19 10)Approvals:CE,R&TTE,ROHS 11)Package: double blister or blister with slide card. Packing: Blister card or box Outer packing: 60pcs/ctn Catron dimensions: 55.5 x 46.5 x 27cm