This Chip-on-Board PCB contains four types of animal sounds. The cmos VLSI single chip synthesizes audio output. Sounds are edge triggered. It requires a power supply 2.4V to 6V. Automatic power down. Standby current less than 1 uA. Operating current is 0.17 to 0.23 mA. Switches : K1, cat , Switch K2 : hen, Switch K3 : cow, Switch K4: dog.
The product datasheet is available here to view
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