Product_description: ["The Netbell-K-E1-C is a compact, self-contained design that was created with ease-of-use in mind. The system is built on TCP/IP platform with a built-in web server and special software designed for scheduling a bell system, all software and mounting hardware required for installation and operation are included. With the built-in web interface, you can access, control and schedule bells over a network or the Internet, no additional software or designated computer required. It’s an ideal solution for schools, factories, warehouses to build a fully automated web-based timed alert system for signaling class changes, shift rotations, breaks and any other timed signal applications. Intended to be an all-in-one solution, the Netbell-K-E1 features a built-in high quality 6 inch high output bell (86dB) that can cover up to 8000 sqft office area at normal noise level, and a completely wired web-based bell controller installed within a NEMA-rated box. There is an external bell kit included in the system with a CP connector that provides quick connect/disconnect the second bell to the Netbell-K-E1 server to cover a larger area. The external bell can be connected at 250 feet away with 18AWG cable (500 feet with 16AWG cable) to the Netbell-K-E1 server. With the push switch connected to the digital input, you can ring bells manually for emergency. It gets its precision time updated from the same NTP server as your Netbell controller, with automatic adjustment for daylight savings time, providing completely maintenance free operation. It is built on Linortek TCP/IP platform with a built-in web server, hardware and software for installation and operation are included, no additional software required, you will only need to login to the device from a standard web browser to change the time zone with its IP address. With the large, bright 4 inch tall digits, the clock is easily visible from up to 250ft. It’s a reliable time clock solution for factories, schools and other commercial, industrial facilities. It's ready to go out of the box, and you need only connect the unit to your AC outlet and an existing network with the provided cables. It can be connected anywhere on the network and does not require direct connection to a PC. For those who wish to forego networking the Netbell-K-E1, it is also able to function as a stand-alone device. Connect the unit to a PC, upload bell schedules, then disconnect, and it will function as scheduled."] (Page 1)