RS232-Keypad-Interface-Storm-4200-001-p-This-series-encoder-from-Storm-allows-interfacing-between-a-keypad-&-host-system-using-the-RS232-communications-protocol-This-model-will-also-drive-a-4-line-x-20-character-LCD-display-p-Storm-4200-001-Rs 232-Keyboard-Encoder-420-Series