Likely it is a programmed uC, not avail as parts from a Korean source.
The clue is a 30 Hz max counting rate. It could be any uC but the HQS is not a list prefix for any Mfg.
The 2 bit input is IN edge count and reset. The uC decodes the decimal count to two digit 7 segment LEDs.
Apparently the Buzzer goes on when it reaches 100 and the reset clears the buzzer.
I highly doubt anyone would sell the chip alone, so if you want it, buy the kit.
**broken link removed**