wireless digital doorbell/NS-2000K/ 3 Remote butto

wireless digitaldoorbell / NS-2000K 3 Remote button For Receiver : ⊕two music for choice ⊕Be valid by 100m (maximum), Preventing wrong calling by anti-interference digital technology ⊕working voltage : AC 110V to 130V , 220V to 240V power supply . ⊕plug available : two flat pins ⊕Quiescent current : 70 to 100Ma ⊕Working current : 80 to 110Ma ⊕Low power consumption: <5mW ⊕Volume : ≥70dB For transmitter : 3 Remote buttonWorking voltage : 12VQuiescent : current : 0mA20 times a day by calculating, a high quality battery can use for a year) Packing clamshell packaging , 60pcs/carton Carton size : 54 x 48 x 32 CM