Key Specifications/Special Features:

Frequency: 433MHz
32 musical tones for choice
Digital code system: 16 digital code, low error rate (only 1/65536), to avoid the interference between neighbors
Press signal button after powered on, the LED light will on for two minutes
During this period, press the button on the transmitter,
the LED light on the receiver will flash for 3 seconds and the music
or LED light will on at the same time after receiving ID code successfully ID code interference with the neighbors
or under the abnormal condition
Press the RESET button or re-connect the power if the ID code interference with the neighbors or under the abnormal
Three indicating modes selectable: musical, light, and musical and light
Intelligent flash light brings convenience to the hearing handicapped
Alternatively used as a message paging alarm for the patient or babies
Remote control/distance range: 80m in open air (metal objects or walls will reduce the operating distance);
Keep away from humidity, rain, heat source, direct sunlight and metal objects
Ideal for home, office, factory, hotel, hospital or any other place where needed
Energy saving and the battery lifetime can up to one year(20 times per day)
3 x AAA batteries for receiver
1 x 23A 12V battery for transmitter
Size of receiver: 6.3 x 3.6 x 11.9cm
Transmitter size: 4.3 x 1.9 x 8.5cm
Measurements: 52.5 x 43.8 x 53.3cm
Gross weight:15.8kgs
Net weight: 12.2kgs
Qty/ctn: 90pcs

wireless music doorbell