Copyright © Parallax Inc.
Digital I/O Board Kit (#27113)
v1.0 2/19/2010 Page 12 of 13
Specifications
Symbol
Quantity
Minimum
Typical
Maximum
Units
V+
Relay Supply Voltage
9
12
15
V
VDD
Logic Supply Voltage
3.3
—
5
V
I
LED
Input LED Forward Current
8
10
20
mA
I
IDLE
Idle Current (Relay Power Only, Off)
—
10.5
—
mA
Pin Definitions for 2x10 Header (Matches AppMod connector)
Pin
Name
Function
1
V+
Relay Power (Can be disconnected via JP2)
2
VDD
Logic Power
3
RLY1
Relay 1 Control Line
4
RLY2
Relay 2 Control Line
5
RLY3
Relay 3 Control Line
6
RLY4
Relay 4 Control Line
7
RLY5
Relay 5 Control Line
8
RLY6
Relay 6 Control Line
9
RLY7
Relay 7 Control Line
10
RLY8
Relay 8 Control Line
11
IN_1
Input 1 Signal
12
IN_2
Input 2 Signal
13
IN_3
Input 3 Signal
14
IN_4
Input 4 Signal
15
IN_5
Input 5 Signal
16
IN_6
Input 6 Signal
17
IN_7
Input 7 Signal
18
IN_8
Input 8 Signal
19
VSS
Ground
20
VSS
Ground
