KB-30 successfully can be connected to a personal computer, which made its main part design simple and realized a low price. When necessary, you can also use it by itself alone after all the settings have been completed. KB-30 is composed with tested long life parts. The electric bulb and the wheel motor can be replaced in a short time with ease of access. KB-30 has realized easy operation by dialogue with the software based on Windows OS.(Windows is a registered trademark of Microsoft Corporation.)KB-30 can use both outer communications RS-232C and RS-485 with a jump switch inside of it. It can be connected with 15 sensor heads via RS-485.