4 Perpetual Alarms LCD Clock Module with Blue Backlight
This is a simplified 4 daily alarms LCD clock module with blue back-light. The blue LED back-light is always turns On. 3 keys, "mode", "set", and "adjust" Installed provides user friendly operation. This timer module is in 24-hour system. 12-hour system is available upon request. Operated with 3.3 V DC of external power source. Piezo alarm circuit is provided. Normally the alarm time is one minutes, but for perpetual reminding the PSEA (power saving endless alert) alert is suggested. It offers endless reminding, i.e., beeping 3 times per minute and never stop beeping unless the "confirm" (the "mode") button is depressed.
Configured in 4 individual output poles for each alarm channel. However, single pole for the 4 alarm outputs is possible too. The output signal of clock module can be as a level high or pulse signal depend upon request. For pulse signal, the duration can be 1, 2, 4, or 8 seconds optionally.
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PCB Size: 70 x 60 mm
Plastic Frame: 58 x 40 mm
Thickness: 10 mm
Screen Size: 49.3 x 22.3 mm
Number of Digit: 4 digits
Digit Height: about 16.00 mm
Button: tact s/w, Mode, Set, and Adjust (Up)
Power Source: +3.3 VDC, external connection
Operating Voltage: +3.00 ~ + 3.50 volts
Typical Current Drain
Normal display mode: 56mA in normal condition, and 120 mA in alarm
Operation Temperature: -10 ~ +50 °C
Storage Temperature: -20 ~ +60 °C
4K Hzs audible alarm for 1 minute
Perpetual Power Saving Endless Alert circuit (called PSEA circuit), beep once per minute, never stop until “Mode” key depressed
Selection of level or pulse output
Output Amplitude: 1.5 VDC
For pulse output, selection of pulse interval, 1 sec, 2 sec, 4 sec, or 8 sec
Selection of single pole or individual pole for the 4 alarms
Regular Clock: hour, and minute
No. of Daily Alarm: 4
24-hour system, available in 12-hour too
Color of back-light: blue; however, amber, white, green, or blue are available upon request.