3154 - 4-Digit Pre-Settable LED Down Counter

Low cost microcontroller based 4 Digit Pre-settable LED Down Counter. Count input can be used for both low (30cps) and high (4100cps) speed applications.

Accepts inputs from any 'make' contact so can be used with pulses from switches, relays, open collectors outputs or simply push buttons.

Four user-selectable output modes for when the count reaches zero. Inputs for Rate, Count and Reset. Output to transistor (NPN, 100mA @30V).

Input, Output and Power In are brought out to a 10-way header strip for easy connection.

Technical Specifications
Supply	Regulated 12Vdc (Order Code PSU445 with connector 778.106)
Current	20 - 50mA max.
Operating modes	Count Stop, Output Hold Over-Count, Output Hold Auto-Reset, One-Shot Output Over-Count, One-Shot Output
Count range	0000 to 9999 (10,000 max)
Count speed (selectable)	Low: 30 cps (15mS high, 15mS low) High: 30,000 cps (measured)
Inputs	Reset / Count / Rate
Input trigger	'Make' contact e.g. switches, relays, open collector outputs or simply push buttons
Output	Transistor, NPN, 100mA @ 30V
Display	4-digit 7-segment with decimal point, 14mm RED LED
Board Dimensions	51x64mm
Connections	10 pin SIL header
Product Format	Electronic Kit (KT ) or Assembled (AS) more
Documentation	User Manual

• The pre-programmed firmware chips supplied with the kit or assembled formats below can also be purchased separately - CLICK HERE for details.