The product built-in central processing unit, is a battery-powered and with keyboard and LCD display programming equipment, through the device can be 900 series of product address settings and functional testing, the user through the numeric keypad input The address and address will be displayed on the LCD panel. After confirmation, the address will be written through the communication bus of the series and can also be used to read the addresses and other information of the addressed 900 series products. In the LCD panel to be displayed, the tester operating voltage of 18V, by the two 9V battery-powered.