This part is a kind of semiconductor called ST-TX01-ASK.

Function of this product has ASK Transmitter Module.

Manufacturers : SUMMITEK Technology

Image and pinout :

Some of the text within the PDF file :

SUMMITEK Technology Co., Ltd. ASK Transmitter Module ST-TX01-ASK(Saw Type) General Description: The ST-TX01-ASK is an ASK Hybrid transmitter module. ST-TX01-ASK is designed by the Saw Resonator, with an effective low cost, small size, and simple-to-use for designing. Frequency Range:315 / 433.92 MHZ. Supply Voltage: 3~12V. Output Power : 4~16dBm Circuit Shape: Saw ST-TX01-ASK 315/434 MHz ASK TRANSMITTER Applications *Wireless security systems *Car Alarm systems *Remote controls. *Sensor reporting *Automation systems PIN Description: Absolute Maximum Ratings Parameter Operation Voltage 315MHz Output power Psens DATA 5V Symbol Condition Specification Min. 3V 4 11 4 11 10 200 Typical 5V 10 20 10 22 20 1k 3k 60 +80 12V 16 57 16 59 Max. Unit V dBm mA dBm mA ms bps [ ... ]

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