Features

• common output

Specifications

• contact rating: 24V DC / 20mA
• contact resistance: 200ohm max.

Panel Cutout Width : 56.2mm

Panel Cutout Height : 72mm

• ROW1: Input pin – Row 1
• ROW2: Input pin – Row 2
• ROW3: Input pin – Row 3
• ROW4: Input pin – Row 4
• COL1: Output pin – Column 1
• COL2: Output pin – Column 2
• COL3: Output pin – Column 3
• NC: Not used

The Keypad 4×3 features a total of 12 buttons in Matrix form. Consider 4 rows as input and 3 columns as output. Each switch is connected from one side to a row and from the other side to a column. For example, if we press switch number 1, the input of this row is saved at the output of its column. The image below shows the internal circuit of this keyboard