t404 pressure cooker mechanical timer students learn to work on the spring countdown timer without battery T404高压锅机械定时器 学生学习做题上发条倒计时器无需电池

Product material: ABS + electroplating

Product dimensions: 66*80*61 MM

Product packaging: color box

Interior decoration dimensions: 37.5 * 37.5 * 30 CM / 100 PCS

Details of the baby:

1: A mechanical timer, custom-made with special machinery, operates on the same principle as a mechanical watch.

2:1 minute – 60 minutes, adjustable as needed.

3: The design is exquisite, and it’s a very cute home decoration!

4: Wide range of applications: medicine, kitchen, household items, schools.Industry, mining, nursing, and so on.......

【Usage Instructions】

Usage of timer:
Turn the timer clockwise one full circle to the zero mark,
After turning counterclockwise for the required time, the timer will emit a clear bell sound.
It means turning down to the final position first, and then back to the scheduled time you need; if it doesn’t sound at 0.
However, it will sound around 1 minute later.
This is a normal phenomenon, as it is mechanical.
It’s normal within three minutes.
【Precautions】

 1. When rotating to the full position, do not apply excessive force to avoid damaging the built-in movement.
2. When the timer is in operation, do not rotate it repeatedly back and forth to prevent damage to the built-in movement.
3. The timer housing is made of ABS plastic; please avoid throwing, dropping, or hitting the fragile timer housing.
4. Both the timer casing and the built-in movement are made of plastic; do not heat or burn them with fire.