Watlow PM LEGACY™ Limit Controller  •  118  •  Appendix
Ordering Information for Limit Controller Models
DRAFT
PM LEGACY Limit Model Configuration Information
① ②
PM
③
Package 
Size
④
Primary 
Functions
⑤
Power 
Supply, 
Digital I/O
⑥ ⑦
Output 1 and 
2 Hardware 
Options
⑧
Comm. 
Options
⑨
Future 
Option
A
⑫
Model 
Selection
⑬ ⑭
Custom 
Options
⑩ ⑪
Output 3 and 
4 Hardware 
Options
③
Package Size
3 =
1
/32 DIN (coming soon)
6 =
1
/16 DIN
⑤
Power Supply, Digital Inputs/Outputs (I/O)
1 =
100 to 240VAC
2 =
100 to 240VAC plus 2 digital I/O points (Not available on 
Express version)
3 =
20 to 28VAC or 12 to 40VDC
4 =
20 to 28VAC or 12 to 40VDC, plus 2 digital I/O points (Not 
available on Express version)
⑥
Output 1 and 2 Hardware Options
Output 1 Output 2
AJ =
None
Mechanical relay 5A, Form A
CJ =
Switched dc/open collector Mechanical relay 5A, Form A
EJ =
Mechanical relay 5A, Form C Mechanical relay 5A, Form A
⑦
⑧
Communication Options
Standard bus always included
A =
None
B =
Bluetooth® 
E = EIA-485 Modbus® RTU and Bluetooth® 
(Not available on 
Express version)
F =
Modbus® RTU 232/485 and Bluetooth® (Not available on 
PM3 or Express version)
G =
EtherNet/IP™/Modbus® TCP and Bluetooth® (Not available 
on PM3 or Express version)
H =
DeviceNet™ and Bluetooth® (Not available on PM3 or 
Express version)
J =
PROFIBUS DP and Bluetooth® (Not available on PM3 or 
Express version)
1 =
EIA-485 Modbus® RTU (Not available on Express version)
2 =
EIA-232/485 Modbus® RTU (Not available on PM3 or Express 
version) 
3 =
EtherNet/IP™/Modbus® TCP (Not available on PM3 or 
Express version)
5 =
DeviceNet™ (Not available on PM3 or Express version)
6 =
PROFIBUS DP 
(Not available on PM3 or Express version)
Note: Bluetooth® not available in all countries, contact factory.
④
Primary Functions
L =
Limit controller with universal input
M =
Limit controller with thermistor input
⑩
Output 3 and 4 Hardware Options
Output 3 Output 4
AA =
None None
AJ =
None Mechanical relay 5A, Form A
AK =
None SSR Form A, 0.5 A
CA =
Switched dc/open collector None
CC =
Switched dc/open collector Switched dc
CJ =
Switched dc/open collector Mechanical relay 5A, Form A
CK =
Switched dc/open collector SSR Form A, 0.5 A
EA =
Mechanical relay 5A, Form C None
EC =
Mechanical relay 5A, Form C Switched dc
EJ =
Mechanical relay 5A, Form C Mechanical relay 5A, Form A
EK =
Mechanical relay 5A, Form C SSR Form A, 0.5A
FA =
Universal process None
FC =
Universal process Switched dc
FJ =
Universal process Mechanical relay 5A, Form A
FK =
Universal process SSR Form A, 0.5A
KK =
SSR Form A, 0.5A SSR Form A, 0.5A
Note: Only available on 
1
/
16
 DIN models if communication Options F, 
G, H, J or 2 thru 6 is ordered in previous digit, then Option AA must 
be ordered here.
⑪
⑫
Model Selection
G = PM LEGACY Version (Output 1 and 2 always isolated)
H = PM LEGACY EXPRESS Version (Available in PM3 or PM6) 
(Output 1 and 2 always isolated)
⑬
Custom Options
WP =
Watlow logo face plate
WN
 =
No logo/no name face plate
AG =
Conformal coating
⑭
Watlow® and EZ-ZONE® are registered trademarks of Watlow Electric Manufacturing 
Company.
SMOOTH-TOUCH™ and EZ-LINK™ are trademarks of Watlow Electric Manufacturing 
Company.
UL® and cUL® are registered trademarks of Underwriter’s Laboratories, Inc.
i-Phone® is a registered trademark of Apple Corporation.
Android™ is a trademark of Google LLC.
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