This is a used Candyhouse WiFi Module 2 (compatible with SESAME 3/4/5/5Pro). This model is discontinued. Operation has been confirmed. No instruction manual or box included. Please purchase only if you understand how to set it up. We are unable to provide support, so please understand this before purchasing. This is a bridge (repeater) that connects the smart lock "SESAME" to Wi-Fi, allowing remote operation from anywhere in the world via your home Wi-Fi network. By linking the SESAME unit with the Wi-Fi module, you can not only operate it via Bluetooth at close range, but also lock and unlock your door from outside the home via the internet. Weight: 16.5g Size: 33mm x 33mm x 16mm Number of devices that can be linked: 3 Compatible models: SESAME 3/4/5/5Pro/5 North America/Nordic version, Bot 1, Cycle 1 Not Matter compatible External apps: Amazon Alexa, Google Home compatible Infrared remote control not supported Connection terminal: USB-Type-A Details: ・The new WiFi Module 2 only supports 2.4GHz WiFi networks. 5GHz is not supported, so only 2.4GHz will be displayed when selecting an SSID. If you have a router with an automatic connection function for 2.4GHz and 5GHz, it will only connect to 2.4GHz. ・The new WiFi Module 2 should be installed within 10 meters of the SESAME, with no obstacles in between. The closer it is to the SESAME, the more stable the connection will be. ・The new WiFi Module 2 uses a USB-Type-A plug, so you can use it in various countries with your own USB adapter. (Please use a power adapter with an output of 4.5V~5.5V.) USB adapters and USB power plugs are not included.