Automatic Bell Timer
Please read the manual before use.
Function & Application
This product is designed with a high performance microcomputer chip. It can automatically switch on at a fixed time, with a maximum of 40 groups (80 times) per day. It has an automatic calibration function for time keeping, and is easy to operate. It is widely used in schools and factories etc.
Specification
Working voltage: AC240V 50/60Hz
Scope: 85% ~ 110%
Consumed power: 4W
Dimensions: 126x88x51mm
Weight: 400g
Timing Range: 23h 59m 59s
Condition temperature: -10 to +50°C
Load capacity: Resistance 25A
Timing error: 0.5s per day (with automatic error adjust function)
2s per day (without automatic error adjust function)
Fixing to the Wall
Insert 2xAAA batteries into the rear of the unit. This is the battery backup, should there be a power failure. Mark the 3 mounting holes on the wall and drill the 3 holes. Using suitable fixings, screw the unit to the wall. See Fig 1 below.
Open the terminal safety cover. Please refer to the wiring diagram in Fig 2 before proceeding with the below instructions.
Connect a 230VAC supply to the two left hand terminals, marked ‘Power S1 and S2’. Connect a 230VAC sound unit (e.g. siren or bell) to the two right hand terminals marked ‘Load L1 and L2’.
Close the safety cover before switching on the mains supply.
Display Indications
Operating Instructions
There are 6 function keys. MODE, SELE, +, -, AUTO/MAN and RESET
The MODE key is used to step through the four functions. The functions are:
Section 1 - Setting the Time
1. Press the MODE key once. TC will appear in the display.
2. Press the SELE key and the HOUR will flash. Using the + and - keys, set the hour and press the SELE key.
3. The MINUTES will flash. Using the + and - keys, set the minutes and press the SELE key.
4. The SECONDS will flash. Again, using the + and - keys, set the seconds and press the SELE key.
5. The WEEK DAY will now flash (See Fig 3). Set the current day using the + and - keys, then press the SELE key
6. The time is now set. Press the MODE key four times to exit the menus to the normal display
Section 2 - Setting the Program
1. Press the MODE key twice. PROG will appear in the display.
2. Press the SELE key and the program location will flash in the right hand of the display (See Fig 4). Each program location holds time you want the bells to go off each day
3. Use the + and - keys to find which program location you want to use/edit and press SELE.
4. The HOUR will flash. Use the + and - keys to change the hour, then press the SELE key to proceed.
5. The MINUTES will now flash. Again, using the + and - keys, set the minutes, then press the SELE key.
6. The WEEK day will now flash. Use the + to cycle through each day you want the current program to run, and use the - to toggle each day On or Off (On includes the day, Off cancels the day). Once you have selected the days you want, press SELE to set.
7. To add more times (locations), press SELE, then follow steps 3-6 again. To exit, press the MODE key three times. Ensure the rocker switch on the right of the unit is set to AUTO (||) and the display shows AUTO in the Control Selection
NOTE:- To delete a ring time (program location), follow steps 2 and 3, selecting which ! ! program to delete with SELE, then press the AUTO/MAN key. The display ! ! should revert to Fig 4, depending on which location is selected
Section 3 - Clock Calibration
Based on the actual clock error, work out how much time the clock is losing or gaining per day.
1. Press the MODE key three times to show ER in the display and press SELE.
2. Use the + or - keys to adjust the preset value.Positive error means adjust the clock to gain time.Negative error means adjust the clock to lose time
3. Press the MODE key twice to exit to the normal display
Section 4 - Bell Duration
This is used to set the length of the ringing times. The setting range is 0 to 23h59m59s and the default is 10s.
1. Press the MODE key four times, until TL shows in the display, then press SELE.
2. The HOURS will flash. Use the + and - keys to set the hours, then press SELE again.
3. Now the MINUTES will flash. Again, use the + and - keys to set the number of minutes, then press the SELE key.
4. The seconds will now flash. Using the + and - keys, set the seconds and press the SELE key.
5. Press the MODE key once to exit to the normal display
Manual Operation
This model has two methods of manual control:
1. AUTO/MAN key. When it is pressed, you can switch from ON, OFF or AUTO.
If set to ON, the unit will ring for the preset duration, then return to Auto Mode.
If set to AUTO, it will ring at the pre-programmed times for the duration set.
If set to OFF, the unit will not ring until reset to AUTO.
2. On the right of the unit, there is a 3-way rocker switch, marked AUTO (||), OFF (O)and ON (|).
It can directly control the drive circuit of the unit.
When it is switched to AUTO, the unit will ring at the pre-programmed times.
If it is switched OFF the unit will not ring at all.
If switched ON, the unit will ring for however long the switch is in the ON position
Troubleshooting
