SMATRUL Self-Powered Wireless Model Doorbell [1 BUTTON - 2 RECEIVERS] - Black Back brace -Size of pocket: about 19*12

-Size of pocket: about 19*12

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SMATRUL Self-Powered Wireless Model Doorbell [1 BUTTON - 2 RECEIVERS] - Black Back brace -Size of pocket: about 19*1260 Music Selection The doorbell has 60 melodies for you to choose from, and the doorbell volume has 4 adjustable levels, namely "Large, Medium, Small, Silent" levels, from 0dB to 110dB. The pleasant sound of the wireless doorbell can spread throughout the house and walls, and can be heard anywhere in the house to notify you that a guest has arrived. Battery free transmitter The transmitter of this wireless doorbell does not require the installation of