Product Lines

50 series – UM4 Battery Holder Mounted Alarm Clock Module
digital LCD perpetual time module


4 daily perpetual remindings digital LCD time module

Product Descriptions
24-hour version digital LCD 4 channels of daily reminding clock module with 3 keys. Each reminding channel has its own individual output pole. Optionally all reminding channels may share the same output pole too. It operates 1.5 V DC with extremely low power consumption. AAA (UM4) battery holder is mounted on the rear side. Soldering pads for power input, buttons, and output poles are arranged at both sides of PCB for external connection. 12-hour version is available too.
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specification of digital LCD daily reminding clock module, 50E-A0JZ (10.5 MB)
Physical Size
PCB Size: 70 x 51.2 mm
Plastic Frame: 58 x 40 mm Thickness: 7 mm (battery holder not included)
LCD Display
Screen Size: 49 x 21.9 mm
Number of Digit: 4 digits
Digit Height: about 16.00 mm
Button: 3 of tact s/w, 5 mm height; externally connection is possible
Power Source: +1.5VDC, using a piece of UM4(AAA), battery holder mounted; externally input is possible
Audible Alert Method:
1. 4K Hz beep for 1 minute
2. Endless Reminding (by request): beep three time, then wait for 1 minute and repeat again, never stop unless the button is depressed
Technical Data:
Operating Voltage: +1.20 ~ + 1.70 volts
Typical Current Drain: 3μA in normal condition; 400 μA when alarm goes off Operation Temperature: -10 ~ +50 °C
Storage Temperature: -20 ~ +60 °C
- Real time clock, display hour and minute
- Low power consumption
- Available in 12 or 24 hour versions
- 4 daily reminding for 1 minute, or perpetual reminding available upon request
- Soldering pads at both sides of PCB for external connection of power source, buttons, and output poles
- 3 keys operation, mode, set, and up
- Power: 1.5V DC, AAA (UM4) battery holder mounted
- 4 output poles for each reminding channel, or single pole with 1, 2, 4, and 8 seconds’ pulse for all reminding
Main Products
LCD digital alarm clock module, LCD countdown timer module, daily reminding clock module, lifetime meter,