What's in the box:

USB Tuya Zigbee Tuya Smarts Smarts Life Signal Repeaters Signal Amplification Transmitters Signal Enhancement Intensive Repeater Compatible with Alexa, Google Home (Standard)

If your house too big then Zigbee signal can't cover every corner, then you can use this Zigbee singal repeater.

Features:
It consist of a highly intergrated WI-FI module, low power-consuming Zigbee module, and PCBA.
It can be connected to the Tuya smarts app for device adding, reset, third-party control, and Zigbee group control, meeting smarts home requirements.
Assist tuya Zigbee gateways and devices to enhance signals.
The coverage distance is 20-30m.
USB Interface, you can plug it into most usb connector.

Specifications:
Working voltage: 1.8-3.3V
Communication method: Zigbee
Coverage distance: 20-30m
Color: white
Material: plastic
Item size: 28 * 18 * 7mm / 1.1 * 0.7 * 0.3in
Item weight: 28g / 1.0ounce
Package size: 70 * 60 * 30mm / 2.8 * 2.4 * 1.2in
Package weight: 30g / 1.1ounce

Packing List:
1 * USB Extender
1 * Manual