Wireless USB Doorbells with Kinetic Transmitter

Product Feature - The wireless usb doorbell is easy to install, just insert the digital remote wireless doorbell receiver into the USB outlet, and install the kinetic wireless doorbell  transmitter with a sticky pad or assemble screws. - The wireless USB doorbell is featured with a USB port of 2.0 plug, power supply is DC 5V 1A. - Operating range up to 150 metres on open air, which is applicable for villa, multi-story houses or big property.            - The transmitter is waterproof IP44 and kinetic self-powered, better suited to bearing up under adverse conditions.                                                                    - 32 sounds selectable on chime,4 level volume adjustable, Max. sound is 85db at 1m. - Mini size rece…