Introduction - If you have any usage issues, please Google them yourself
1.5 digital display, the static drive* 2. Be functional (settings | | hours | | seconds, the time alarm)* 3. Lock, clear, power-off memory function* 4. Button-plus-one device function & & Buzz sounds for* 5. interface can be extended, such as: sensors, touch switch* 6. using separate display board & board (if they can also be made of a board, components can be placed behind the display)* 7. outsourced production of PCB, durable* 8. key distribution: (from bottom to top)* K1- " -" , K2- " +" , K3- " clear/time adjustment" , K4- " function keys" * Mode Description : A total of four models, respectively, counting mode,