1. Calculator Keyboard 1.Mini 5 Pin numeric keypad with 18 keys 2.The device could be detected automatically by PC without the driver, and plug and play 3.Build-in DC 1.5V battery.It could be used normally without changing the battery for a long time 4.The device applies to account by normal operations 5.In the mode ogf calculator, it would apply the normal calculator
functions. And if you connect it by USB cable to your PC, you may send the results showed on LCD to PC to input or edit the data 6. Press
MODE
to choose the mode for operation 7. This device will automatic turn off during 6 mimutes of no movement 8.Press the key of Num lock to transform number key and direction key Insultation resistance: 100M OHM at 100VDC Contact bounce: 5ms max Operation voltage: +5VDC 10% Operation current: 250mA max. at +5VDC Colors Available: Sliver