The product in the images you uploaded is a Swann Home Doorbell Kit, which is a DIY wireless alert system designed for home or business use to let you know when there is a visitor. Heres a detailed description based on the packaging:

Front:

Brand: Swann (Advanced Security Made Easy)
Product: Home Doorbell Kit
Type: DIY Wireless Alert
Features:
Wireless doorbell kit with easy do-it-yourself installation.
Notifies you when theres a visitor.
Supports up to 36 selectable chimes.
Battery-operated system.

Back:

Installation:
The doorbell kit is easy to install and includes all necessary mounting hardware.
The wireless system operates on batteries (3x AA batteries for the receiver and 1x CR2032 for the doorbell).
Provides up to 200ft/60m wireless range between the doorbell and the receiver.
Usage:
The receiver emits an audible chime and lights up when the doorbell is pressed.
It comes with adjustable volume (3 levels) and a silent mode with light-only alerts.
Expandable with additional doorbells for other entrance ways, each assigned a unique chime.
Specifications:
Receiver Dimensions: 5 x 5 x 1.4 inches (127 x 127 x 36mm)
Doorbell Dimensions: 3.5 x 1.5 x 0.9 inches (90 x 39 x 24mm)
Receiver Weight: 154g
Doorbell Weight: 52g
Box Contents:
1 Receiver Unit with Alarm
1 Doorbell Unit
Double-sided Tape for Doorbell
Mounting Screws & Wall Plugs
Batteries for Doorbell (CR2032)
Stickers & Quick Start Guide

Additional Details:

Support: Comes with Swanns Lifetime Support promise, offering help 24/7.
Expandability: Can pair up to 5 doorbells to one receiver and support up to 15 channels (per installation guidelines).

If you need more specific details or clarification on this kit, feel free to ask!