1. Description:
(1) 0-9 is the numeric input key. Every time you press the active button, the buzzer sounds "beep" and the "yellow light" flashes.
(2) Both A/B keys are confirmation keys.
(3) The red button is the password setting and modification key. Press the red button, and the buzzer will ring twice and then light up. There is no subsequent operation after 20 seconds, the "yellow light" is off, and the system enters a dormant state.
(4) In the wake-up state, there is no subsequent key input after 20 seconds, and the system will enter a dormant state. Press any key to wake up the system and continue to function operations.
(5) This system has two sets of passwords: user password and system password. Each set of password numbers is 1-8 digits.
(6) Entering a number less than 1 digit and more than 8 digits and entering the wrong password is all "Error".
2. Initial state:
(1) Be sure to press the "#" key several times before powering on to ensure that the capacitor is discharged cleanly to ensure that the system code is modified successfully.
(2) Power on, the system will not respond at all.
3. System password settings:
Press "00" and then press the red button. The buzzer "beep" sounds twice, the "yellow light" flashes twice, and then it will light up. Enter a 1-8-digit password at will, press the confirm button (# key), the buzzer "beep and beep" sounds twice, and the "yellow light" flashes twice, and then it will turn off. The system password is set successfully, and the system enters the SL##P state.
4. Setting or modifying user password:
Press the red button, the buzzer "beep" sounds twice, the "yellow light" flashes twice, and then it will light up for a long time. Enter a 1-8-digit password at will, and press the confirm button (# key), the buzzer "beep, beep" sounds twice, and the "yellow light" flashes twice, and then it will turn off. The user password setting or modification is successful, and the system enters the SL##P state.
5. Unlock:
After entering the correct system password setting or user password, press the confirm button (# key), the buzzer "beep" sounds twice, the "yellow light" flashes twice, and then goes out, the green light is on, and the solenoid valve is closed for 5 seconds. (If password input error occurs and press * to delete it, enter the correct password from a new start)
6. Error handling:
(1) If you enter the wrong password, press the confirm button (# key) to confirm, the buzzer will ring for five consecutive times, and the "yellow light" will flash five consecutive times.
(2) If the system enters incorrectly three times in a row, the system will lock 20S (the system does not accept any buttons at this time), and if the system enters incorrectly three times in a row, the system will lock 300S; if the system enters incorrectly three times in a row, the system will lock 300S...
7. Low voltage indication
When the system power supply is lower than 4.5V±0.3V, the red light is lit at the same time when the green light is on, indicating that the voltage is insufficient, but the system can still work normally at this time.
8. Power consumption:
1) The sleep current is less than 10UA.