Product Lines

41 series – LED Backlight Included Digital Alarm Clock Module
Endless Alarm Clock Module, 41C-A0JA-RB, LCD Alarm Clock Module with LED Backlight in Blue Color


LCD Alarm Clock Module with LED Backlight in Blue Color

Product Descriptions
This is a LCD alarm clock module, 12 hr (24 hour version available also), one daily alarm (four alarms available also), with blue color LED backlight.

Backlight in amber, yellow, green, or white colors are available too. Use 3.0 VDC external power source. Backlight On/Off is controlled by IC. Depress of any button to activate backlight. A specific key is available to turn on backlight steady. For some special application it is possible to set the backlight always ON when power ON.

To provide the possibility of control any electronic device, output poles are available upon request. Possible to select individual pole for each alarm output or single pole for all alarms output.

Additional channels of alerts is possible. Maximum 4 daily alerts upon request.
Alarm output available in PSEA (Power Saving Endless Alert) endless alert (or also called as perpetual alert clock module), or regular one minute alarm.

If you are interested in LCD Alarm Clock Module, LCD Alarm Clock, or perpetual alarm timer or Clock, please feel free to contact us.
Data Sheet of 41C-A0JA-RB (377 KB)
  1. Physical Size
    • PCB Size: 62 x 36 mm
    • Plastic Frame: 50 x 36 mm
    • Thickness: 10 mm (battery not included )
  2. LCD Display
    • Screen Size: 35 x 15.5 mm
    • Number of Digit - 4 digits
    • Digit Height: about 11.4 mm
  3. Button
    • 3 keys normally; two additional keys, key-lock, and backlight upon request
  4. Power Source: +3.0 V DC,
  5. Operating Voltage: +2.90 ~ + 3.10 volts
  6. Typical Current Drain
    • Normal display mode: 10 μA in normal condition, 30μA when low voltage detector engaged and 10mA when blue backlight engaged
    • Alarm mode: 15 mA maximum with backlight
  7. Temperature
    • Operation : -10 ~ +50 °C
    • Storage Temperature: -20 ~ +60 °C
  8. Audible Alarm
    • 4K Hzs audible alarm for 1 minute normally
    • Power Saving Endless Alert circuit (called PSEA circuit), beep triple times for every minute until mode-key depressed (This feature upon request)
  9. Selection of level or pulse output
    • Output Amplitude: 1.5V DC
    • For pulse output, selection of pulse interval, 1, 2, 4, or 8s
    • Selection of single or individual pole
  • Regular clock: hour, and minute
  • One daily alert, multi-daily alerts is possible upon request, maximum 4 alerts
  • 24-hour system normally; 12-hour version available also
  • LED backlight in blue color normally; other colors available upon request
  • Low voltage detection (by request)
  • Backlight turn on for 10 seconds when any of Mode, Set, or Adjust depressed
  • Key tone
  • Key lock and Backlight (upon request)
  • Backlight turn on when alarm goes off

Versions List of 41C-A0J series:
Model No. Version No. of Daily Alarm Color of Backlit
41C-A0JX-RB 12-hr non blue
41E-A0JX-RB 24-hr non blue
41C-A0JA-RB 12-hr 1 blue
41E-A0JA-RB 24-hr 1 blue
41C-A0JB-RB 12-hr 2 blue
41E-A0JB-RB 24-hr 2 blue
41C-A0JY-RB 12-hr 3 blue
41E-A0JY-RB 24-hr 3 blue
41C-A0JZ-RB 12-hr 4 blue
41E-A0JZ-RB 24-hr 4 blue