USB 15 Keys Keypad Numeric Keyboard Numpad Digital Keyboard Pin Pad with LCD Plug and Play Support Bank POS Terminal Input Password Numpad Keypad(YD541-Ciphertext No Sound)
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USB interface , Plug and play ,NO Sound! Ciphertext version: It displayed asterisk ****** on the LCD screen when you press the number keys!
Sturdy and Safely , It attaches a protect case .$36.99