Digital Wireless Remote Door Chime (ZTB-22)

Acquiescence music: Double clink sonuds and alice and westminster Optional music: Double clink sonuds and welcome (in english) and welcome (in arabic) Packing: Blister Catron measurement (cm): 55. 5*46. 5*32 (AC type); 55. 5*46. 5*27 (DC type) Quantity of package: 60 pcs/ctn Transmission range: 100m (open area) Approval: CE, R&TTE, RoHS Frequency: 315MHz and 433MHz Negative wave: -57dbm Quiescent current: 5W (AC type); 550u A (DC type) Working voltage: 220V (AC type); 3V (DC type) Transmitting power: 220u W.Trademark: ZNT Model: ZTB-22