China USB 21keys ABS Smart Backlight Programmable POS Numeric Keyboard Kb21u

USB 21Keys ABS Smart Backlight Programmable POS Keyboard KB21U

Key Number21 keysKey Switch MechanismElectrostatic Capacity Key Switch with over 30 million life cycle timeBlack lightBacklight switch and layer exchange operation as shown figure. The lower-left corner of independent lamp is layer indicator. Off is first layer; On is second layer; Breathe is three layer.Total Travel Distance4 + 0.5mmKey Force (Peak Load45 + 5cNInterface / PowerUSB / +5VDC + 10% / < 200mACableUSB cable stored on the backProgrammable FeaturesProgrammable KeysAll keys can be programmableMulti-level Programmingsupport max 3 levelsTime Delay SupportProvide a variable time delay, 0.5 sec per intervalSoftware CompatibilitySupport USB programming in Window ME/ 9X/2K/ XP/7/8/10MemoryAll programmed data are stored in EEPROM, without batteryLED IndicatorNumber lock,Layer and buzzerOthersElectronics Lock3 section of electronic locks for different level usersEnvironmentOperating-10ºC ~ 50ºC(32°F ~ 122°F) , 10% ~ 90% (no condensation)PhysicalStorage- 20ºC ~ 55ºC(-4°F ~ 131°F) , 10% ~ 90% (no condensation)Dimension131 (L) x 89 (D) x 37 (H) mm, 250 g (NW)Box / Weight147 (L) x 146 (D) x 40 (H) mm/ 340g (GW)