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99 hour 59 minutes Countdown/Up Timer Module with LED Back-light





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Item Number.:
51T-A0H-HM
Product Name:
99 hour 59 minutes Countdown/Up Timer Module with LED Back-light
Description:
This is a 99 hours 59 minutes countdown/up timer, with 1 second resolution, and one minute minimum setting interval. Due to the available of count up feature, it can be used as a chronometer.

As well as amber color, yellow, green, and white colors are available for the back-light too. 2 pieces of AAA (UM4) battery holder is mounted on the back for testing purpose only. Due to LED consuming power to high, suggest to connect power source externally. Requested power is 3.3 VDC. Audible or pulse output poles are available. This is an ideal module for full function evaluation.

Audible endless alert method is so called PSEA (Power Saving Endless Alert ): Beep 6 times, then wait for 10 seconds, and repeat again. Never stop alert, unless "STOP" button is depressed.

The module also provides open collector output pole to allow people use it to control other power operated device.

Versions with other maximum countdown capacities:
  • 51T-A0H-MS: 99M59S
  • 51T-A0H-HM: 99H59M
  • 51T-A0H-DH: 99D23H
  • 51T-A0H-DD : 9999D
Features:
  1. Timer Capacity: 99 hours 59 minutes
  2. Resolution: 1 second
  3. Minimum Setting Interval: one minute
  4. Count up feature is included. Therefore it can be used as a chronometer.
  5. Pysical Size:
    • PCB sizes: 77 x 60mm
    • Plastic Frame: 58 x 40 mm
    • Thickness: 10mm (battery not included)
  6. LCD Display
    • Screen Size: 49.3 x 22.3 mm
    • Number of Digit: 4
    • Digit Height: about 16.00 mm
  7. Button:tact s/w, maximum 5 keys, i.e., start/stop, hour adjust, minute adjust, reset, and push-start
  8. Power Source: +3.3VDC
  9. Operating voltage: +1.80 to + 3.80VDC for timer only, not for back-light, the brightness of back-light may get dim for low voltage
  10. Typical current drain:
    • Normal display mode: 20 μA in normal condition, 30 μA when low voltage detector engaged and 56 mA when amber back-light engaged
    • Alarm mode: 400 μA without back-light, 115 mA with amber back-light
  11. Operating temperatures: -10 to +50°C
  12. Storage temperatures: -20 to +60°C
  13. Alarm Output options:
    • 4k Hz audible alarm for 1 minute
    • 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
  14. Output Poles
    • Selection of level or pulse output
    • Output amplitude: 1.5VDC
 
 
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