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50 Series – Special purpose LCD countdown timer with external manipulating lead
Countdown Timer Module


99 minutes 59 Seconds Countdown Timer Module

Product Descriptions
This is a 99 minutes 59 seconds countdown timer. with 4 digits. The digit height is 16 mm. Four tact switches with 5 mm height are mounted on the front lower side. The "start and stop" switch at the left hand side, then the settings of minute and second, and then the "reset" at the most right hand side. Different kinds of output poles deliver various signals for user comprehensive applications, such as power on/off control of electrical device, security device control, automatically alarm system activation. Many other versions are available. Please ask.

Operated with 1.5 VDC, an UM4 (AAA) battery holder is mounted on the rear side of module. Physical sized as 70 x 40 x 7 mm, with 4 of 2.3 mm mounting holes at the PCB corner.

This module has 6 output poles with different signals delivered for comprehensive applications. For details please refer to the specification attached.

We are not only providing professional Countdown Clock, Countdown Timer and Event Countdown Clock, but also offer high quality Countdown Timer Module.
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Specification of 50T-A0H-MS (443 KB)
  1. Capacity: 99 minutes 59 seconds
  2. Resolution: 1 second
  3. Setting Interval: 1 hour (minimum)
  4. Physical Size
    • PCB Size: 70 x 40 mm
    • Plastic Frame: 58 x 40 mm
    • Thickness: 7 mm (battery not included )
  5. LCD Display
    • Screen Size: 49.3 x 22.3 mm
    • Number of Digit: 4 digits
    • Digit Height: about 16.00 mm
  6. Button: tact s/w; 3 to 4 keys on the front
  7. Power Source: +1.5 VDC, use one piece of UM4 (AAA); battery holder mounted but battery not included
  8. Technical Data
    • Operating Voltage: +1.20 ~ + 1.70 volts
    • Typical Current Drain: 3 μA in normal condition; 400 μA during beeping
    • Operation Temperature: -10 ~ +50 °C
    • Storage Temperature: -20 ~ +60 °C
    • Aural Alert Methods
      1. Regular audible alert for 1 minute at 4 K Hz
      2. Power Saving Endless Alert circuit (called PSEA circuit), beep six times then wait for 10 seconds and repeat again; never stop unless the “stop” key is depressed
    • Output Pole
      1. B1 Pole - Repeat 0.5 sec ON and 2.5 sec OFF for 6 times, then wait for 10 seconds and repeat again; never stop unless the "Stop" button depressed
      2. B2 Pole - After countdown to zero, repeat 1 sec ON, 1 sec OFF for one minute
      3. B3 Pole - Level, 1.5 VDC for 1 minute after timer countdown to zero
      4. B4 Pole - To select power ON start countdown (application details upon request)
      5. Lite Pole - Level high, 1.5 VDC, during counting
      6. ALM Pole: Audible alarm output, 4K Hz
List of Versions Available:
Model No. Min. Setting Interval Countdown Capacity Count Up Capacity Resolution Countdown Count Up
50T-A0H-MS 1 sec 99 min 59 sec 9999 minutes 1 sec v v
50T-A0H-HM 1 min 99 hr 59 min 9999 hr 1 sec v v
50T-A0H-DH 1 hr 99 days 23 hr 9999 days 1 sec v v