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Temperature & Process Controllers

PID and limit controllers, process controllers, and SCR power controllers for precise heat and process control.

Anderson-Bolds supplies temperature and process controllers from Watlow, Fenwal, and Novus — PID process controllers, FM-approved limit controllers, and SCR power controllers. We can pair a controller with the matching Watlow heater and sensor so the loop is sized and tuned together.

All Temperature & Process Controllers PID / Process Limit / Safety Power (SCR) Controllers

PM4C1EK-1AAAAAA — Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, 485 Modbus, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, 485 Modbus, 100-240 VAC

SKU: PM4C1EK-1AAAAAA

Stock confirmed at order — usually ships from stock

$641.95

PM4C1EK-1AEJAAA — Watlow 1/4 DIN, Controller, 4 Outputs, Universal Input, 485 Modbus, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, 4 Outputs, Universal Input, 485 Modbus, 100-240 VAC

SKU: PM4C1EK-1AEJAAA

Stock confirmed at order — usually ships from stock

$738.97

PM4C1EK-1LEJAAA — Watlow 1/4 DIN, Controller and Limit, 4 Outputs, Universal Input, 485 MODBUS, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller and Limit, 4 Outputs, Universal Input, 485 MODBUS, 100-240 VAC

SKU: PM4C1EK-1LEJAAA

Stock confirmed at order — usually ships from stock

$835.99

PM4C1EK-3AAAAAA — Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, EtherNet/IP, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, EtherNet/IP, 100-240 VAC

SKU: PM4C1EK-3AAAAAA

Stock confirmed at order — usually ships from stock

$787.48

PM4C1EK-6AAAAAA — Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, PROFIBUS DP, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, PROFIBUS DP, 100-240 VAC

SKU: PM4C1EK-6AAAAAA

Stock confirmed at order — usually ships from stock

$860.24

PM4C1EK-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1EK-AAAAAAA

Stock confirmed at order — usually ships from stock

$544.93

PM4C1EK-AAEAAAA — Watlow 1/4 DIN, Digital PID Controller, 3 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 3 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1EK-AAEAAAA

Stock confirmed at order — usually ships from stock

$593.44

PM4C1EK-AAEJAAA — Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1EK-AAEJAAA

Stock confirmed at order — usually ships from stock

$641.95

PM4C1EK-ALEJAAA — Watlow 1/4 DIN, Digital PID Controller and Limit, 4 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller and Limit, 4 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1EK-ALEJAAA

Stock confirmed at order — usually ships from stock

$738.97

PM4C1FA-1AAAAAA — Watlow 1/4 DIN, Controller, Process Output, Universal Input, 485 Modbus, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, Process Output, Universal Input, 485 Modbus, 100-240 VAC

SKU: PM4C1FA-1AAAAAA

Stock confirmed at order — usually ships from stock

$617.69

PM4C1FA-1LEJAAA — Watlow 1/4 DIN, Controller and Limit, 3 Outputs, Universal Input, 485 MODBUS, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller and Limit, 3 Outputs, Universal Input, 485 MODBUS, 100-240 VAC

SKU: PM4C1FA-1LEJAAA

Stock confirmed at order — usually ships from stock

$811.73

PM4C1FA-3AAAAAA — Watlow 1/4 DIN, Controller, Process Output, Universal Input, EtherNet/IP, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, Process Output, Universal Input, EtherNet/IP, 100-240 VAC

SKU: PM4C1FA-3AAAAAA

Stock confirmed at order — usually ships from stock

$763.22

PM4C1FA-6AAAAAA — Watlow 1/4 DIN, Controller, Process Output, Universal Input, PROFIBUS DP, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, Process Output, Universal Input, PROFIBUS DP, 100-240 VAC

SKU: PM4C1FA-6AAAAAA

Stock confirmed at order — usually ships from stock

$835.99

PM4C1FA-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, Universal Process Output, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller, Universal Process Output, Universal Input, 100-240 VAC

SKU: PM4C1FA-AAAAAAA

Stock confirmed at order — usually ships from stock

$520.67

PM4C1FA-ALEJAAA — Watlow 1/4 DIN, Digital PID Controller and Limit, 3 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller and Limit, 3 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1FA-ALEJAAA

Stock confirmed at order — usually ships from stock

$714.71

PM4C1FJ-1AAAAAA — Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, 485 Modbus, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, 485 Modbus, 100-240 VAC

SKU: PM4C1FJ-1AAAAAA

Stock confirmed at order — usually ships from stock

$666.20

PM4C1FJ-1AEJAAA — Watlow 1/4 DIN, Controller, 4 Outputs, Universal Input, 485 Modbus, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, 4 Outputs, Universal Input, 485 Modbus, 100-240 VAC

SKU: PM4C1FJ-1AEJAAA

Stock confirmed at order — usually ships from stock

$763.22

PM4C1FJ-1LEJAAA — Watlow 1/4 DIN, Controller and Limit, 4 Outputs, Universal Input, 485 MODBUS, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller and Limit, 4 Outputs, Universal Input, 485 MODBUS, 100-240 VAC

SKU: PM4C1FJ-1LEJAAA

Stock confirmed at order — usually ships from stock

$860.24

PM4C1FJ-3AAAAAA — Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, EtherNet/IP, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, EtherNet/IP, 100-240 VAC

SKU: PM4C1FJ-3AAAAAA

Stock confirmed at order — usually ships from stock

$811.73

PM4C1FJ-6AAAAAA — Watlow 1/4 DIN, Controller, Process Output, Universal Input, PROFIBUS DP, 100-240 VAC

Watlow

Watlow 1/4 DIN, Controller, Process Output, Universal Input, PROFIBUS DP, 100-240 VAC

SKU: PM4C1FJ-6AAAAAA

Stock confirmed at order — usually ships from stock

$884.50

PM4C1FJ-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1FJ-AAAAAAA

Stock confirmed at order — usually ships from stock

$569.18

PM4C1FJ-ALEJAAA — Watlow 1/4 DIN, Digital PID Controller and Limit, 4 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller and Limit, 4 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1FJ-ALEJAAA

Stock confirmed at order — usually ships from stock

$763.22

PM4C1FK-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1FK-AAAAAAA

Stock confirmed at order — usually ships from stock

$561.10

PM4C1FK-AAEJAAA — Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1FK-AAEJAAA

Stock confirmed at order — usually ships from stock

$658.12

PM4C1KH-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1KH-AAAAAAA

Stock confirmed at order — usually ships from stock

$553.01

PM4C1KH-ALEJAAA — Watlow 1/4 DIN, Digital PID Controller and Limit, 4 Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller and Limit, 4 Outputs, Universal Input, 100-240 VAC

SKU: PM4C1KH-ALEJAAA

Stock confirmed at order — usually ships from stock

$747.05

PM4C1KK-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 2 SSR Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 2 SSR Outputs, Universal Input, 100-240 VAC

SKU: PM4C1KK-AAAAAAA

Stock confirmed at order — usually ships from stock

$536.84

PM4C1KK-ALEJAAA — Watlow 1/4 DIN, Digital PID Controller and Limit, 2 SSR Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/4 DIN, Digital PID Controller and Limit, 2 SSR Outputs, Universal Input, 100-240 VAC

SKU: PM4C1KK-ALEJAAA

Stock confirmed at order — usually ships from stock

$730.88

PM4C4EA-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 1 Relay Output, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 1 Relay Output, Universal Input, 24V AC/DC

SKU: PM4C4EA-AAAAAAA

Stock confirmed at order — usually ships from stock

$504.50

PM4C4EH-1AAAAAA — Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, 485 Modbus, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, 485 Modbus, 24V AC/DC

SKU: PM4C4EH-1AAAAAA

Stock confirmed at order — usually ships from stock

$658.12

PM4C4EH-1AEJAAA — Watlow 1/4 DIN, Controller, 4 Outputs, Universal Input, 485 Modbus, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller, 4 Outputs, Universal Input, 485 Modbus, 24V AC/DC

SKU: PM4C4EH-1AEJAAA

Stock confirmed at order — usually ships from stock

$755.14

PM4C4EH-1LEJAAA — Watlow 1/4 DIN, Controller and Limit, 4 Outputs, Universal Input, 485 MODBUS, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller and Limit, 4 Outputs, Universal Input, 485 MODBUS, 24V AC/DC

SKU: PM4C4EH-1LEJAAA

Stock confirmed at order — usually ships from stock

$852.16

PM4C4EH-3AAAAAA — Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, EtherNet/IP, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, EtherNet/IP, 24V AC/DC

SKU: PM4C4EH-3AAAAAA

Stock confirmed at order — usually ships from stock

$803.65

PM4C4EH-6AAAAAA — Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, PROFIBUS DP, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller, 2 Outputs, Universal Input, PROFIBUS DP, 24V AC/DC

SKU: PM4C4EH-6AAAAAA

Stock confirmed at order — usually ships from stock

$876.41

PM4C4EH-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 2 Outputs, Universal Input, 24V AC/DC

SKU: PM4C4EH-AAAAAAA

Stock confirmed at order — usually ships from stock

$561.10

PM4C4EH-AAEJAAA — Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 24V AC/DC

SKU: PM4C4EH-AAEJAAA

Stock confirmed at order — usually ships from stock

$658.12

PM4C4EH-ALEJAAA — Watlow 1/4 DIN, Digital PID Controller and Limit, 4 Outputs, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller and Limit, 4 Outputs, Universal Input, 24V AC/DC

SKU: PM4C4EH-ALEJAAA

Stock confirmed at order — usually ships from stock

$755.14

PM4C4EJ-1AAAAAA — Watlow 1/4 DIN, Controller, 2 relay Outputs, Universal Input, 485 Modbus, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller, 2 relay Outputs, Universal Input, 485 Modbus, 24V AC/DC

SKU: PM4C4EJ-1AAAAAA

Stock confirmed at order — usually ships from stock

$650.03

PM4C4EJ-1AEJAAA — Watlow 1/4 DIN, Controller, 4 relay Outputs, Universal Input, 485 Modbus, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller, 4 relay Outputs, Universal Input, 485 Modbus, 24V AC/DC

SKU: PM4C4EJ-1AEJAAA

Stock confirmed at order — usually ships from stock

$747.05

PM4C4EJ-1LEJAAA — Watlow 1/4 DIN, Controller/Limit, 4 relay Outputs, Universal Input, 485 MODBUS, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller/Limit, 4 relay Outputs, Universal Input, 485 MODBUS, 24V AC/DC

SKU: PM4C4EJ-1LEJAAA

Stock confirmed at order — usually ships from stock

$844.07

PM4C4EJ-3AAAAAA — Watlow 1/4 DIN, Controller, 2 relay Outputs, Universal Input, EtherNet/IP, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller, 2 relay Outputs, Universal Input, EtherNet/IP, 24V AC/DC

SKU: PM4C4EJ-3AAAAAA

Stock confirmed at order — usually ships from stock

$795.56

PM4C4EJ-6AAAAAA — Watlow 1/4 DIN, Controller, 2 relay Outputs, Universal Input, PROFIBUS DP, 24V AC/DC

Watlow

Watlow 1/4 DIN, Controller, 2 relay Outputs, Universal Input, PROFIBUS DP, 24V AC/DC

SKU: PM4C4EJ-6AAAAAA

Stock confirmed at order — usually ships from stock

$868.33

PM4C4EJ-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 2 relay Outputs, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 2 relay Outputs, Universal Input, 24V AC/DC

SKU: PM4C4EJ-AAAAAAA

Stock confirmed at order — usually ships from stock

$553.01

PM4C4EJ-AAEAAAA — Watlow 1/4 DIN, Digital PID Controller, 3 relay Outputs, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 3 relay Outputs, Universal Input, 24V AC/DC

SKU: PM4C4EJ-AAEAAAA

Stock confirmed at order — usually ships from stock

$601.52

PM4C4EJ-AAECAAA — Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 24V AC/DC

SKU: PM4C4EJ-AAECAAA

Stock confirmed at order — usually ships from stock

$641.95

PM4C4EJ-AAEJAAA — Watlow 1/4 DIN, Digital PID Controller, 4 relay Outputs, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 4 relay Outputs, Universal Input, 24V AC/DC

SKU: PM4C4EJ-AAEJAAA

Stock confirmed at order — usually ships from stock

$650.03

PM4C4EJ-AAEKAAA — Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller, 4 Outputs, Universal Input, 24V AC/DC

SKU: PM4C4EJ-AAEKAAA

Stock confirmed at order — usually ships from stock

$641.95

PM4C4EJ-ALEJAAA — Watlow 1/4 DIN, Digital PID Controller/Limit, 4 relay Outputs, Universal Input, 24V AC/DC

Watlow

Watlow 1/4 DIN, Digital PID Controller/Limit, 4 relay Outputs, Universal Input, 24V AC/DC

SKU: PM4C4EJ-ALEJAAA

Stock confirmed at order — usually ships from stock

$747.05

Authorized lines

Brands in Temperature & Process Controllers

Temperature & Process Controllers — questions buyers ask

Do I need a separate limit controller?

For most heating systems, yes — a redundant high-limit controller with its own sensor protects against runaway if the primary control loop fails, and it's often required by code or insurers.