【1 transmitter with 2 receivers】Home loud volume, 7-color bright light reminder, long-distance wireless flashing doorbell, suitable for families, can also call with one button to protect their family The transmitter and the receiver are connected wirelessly, and the wireless signal is transmitted. When the button is pressed, the receiver emits beautiful music and flashes seven colors of lights at the same time, which is very convenient for hearing and vision at night Ring the doorbell, the volume is not missed, the volume of level 4 is adjustable, and you can hear it within 150 square meters. No matter how big the house is, you will not be afraid and will not let go of all the friends who visit your home Low power consumption, environmental protection and energy-saving design, low power consumption, only 7 AA batteries, 3 batteries for each of the two receivers, and 1 battery for each transmitter. It can be used for 3-5 months, without potential safety hazards, no fever, safe and