PRE-ASSEMBLED 4 Digit Photographic Timer Board (60-Default,75,90,120,150,180,30,35,40,45,50,55 Secs)

4-digit photographic countdown timer board with 12 selectable preset times from 60 to 180 seconds. Start, Stop and Reset controls. Displays time remaining in seconds. At the end of the countdown the open collector output pulses low for 2 seconds and the display returns to the last set preset time.

On-board START and STOP buttons are also bought out to the 10-way header for use with your own external volt-free contact closures (button, relay, etc.)

The controls are:

• START : Starts the countdown from the displayed preset time (defaults to 60 seconds on power-up)
• STOP (Timer Not Running) : Steps through the preset time selection
• STOP (Timer Running): Freezes display when pressed. Resets timer to last selected preset time when released
• RESET : at any time you can reset the timer by shorting the hardware reset pins together.

The board has an active low open collector transistor output (NPN 100mA, 30V max.). This can be used to drive a buzzer, relay, our 3156 relay board or 3141 delay timer board.

Connections: DC IN, RESET, OUTPUT, STOP and START are brought out to a 10-way header strip for easy connection. START and STOP buttons are also provided on the board.

If you would like the timer to function differently please Contact Us with your requirements.