This part is a kind of semiconductor called HT12E.

Function of this product has Series of Encoders.

Manufacturers : Holtek Semiconductor Inc

Image and pinout :

Some of the text within the PDF file :

2 Features · · · · 12 HT12A/HT12E Series of Encoders Minimum transmission word - Four words for the HT12E - One word for the HT12A Built-in oscillator needs only 5% resistor Data code has positive polarity Minimal external components HT12A/E: 18-pin DIP/20-pin SOP package Operating voltage - 2.4V~5V for the HT12A - 2.4V~12V for the HT12E Low power and high noise immunity CMOS technology Low standby current: 0.1mA (typ.) at VDD=5V HT12A with a 38kHz carrier for infrared transmission medium · · · · · Applications · · · · Burglar alarm system Smoke and fire alarm system Garage door controllers Car door controllers · · · · Car alarm system Security system Cordless telephones Other remote control systems General Description The 212 encoders are a series of CMOS LSIs fo [ ... ]

HT12E PDF Datasheet Download