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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

F4T1A1AAA1A1AAA — Watlow F4T Digital PID Controller, 100-240v AC, 1 Control Loop, Basic Function Blocks

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 1 Control Loop, Basic Function Blocks

SKU: F4T1A1AAA1A1AAA

Stock confirmed at order — usually ships from stock

$1,083.28

F4T1A1AAA1A2AAA — Watlow F4T Digital PID Controller, 100-240v AC, 2 Control Loops, Basic Function Blocks

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 2 Control Loops, Basic Function Blocks

SKU: F4T1A1AAA1A2AAA

Stock confirmed at order — usually ships from stock

$1,237.43

F4T1A1AAA1A4AAA — Watlow F4T Digital PID Controller, 100-240v AC, 4 Control Loops, Basic Function Blocks

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 4 Control Loops, Basic Function Blocks

SKU: F4T1A1AAA1A4AAA

Stock confirmed at order — usually ships from stock

$1,545.74

F4T1A1DAA1A1AAA — Watlow F4T Digital PID Controller, 100-240v AC, 1 Control Loop, 40 Profiles

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 1 Control Loop, 40 Profiles

SKU: F4T1A1DAA1A1AAA

Stock confirmed at order — usually ships from stock

$1,328.53

F4T1A1DAA1A2AAA — Watlow F4T Digital PID Controller, 100-240v AC, 2 Control Loops, 40 Profiles

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 2 Control Loops, 40 Profiles

SKU: F4T1A1DAA1A2AAA

Stock confirmed at order — usually ships from stock

$1,482.68

F4T1A1DAA1A4AAA — Watlow F4T Digital PID Controller, 100-240v AC, 4 Control Loops, 40 Profiles

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 4 Control Loops, 40 Profiles

SKU: F4T1A1DAA1A4AAA

Stock confirmed at order — usually ships from stock

$1,790.99

F4T1A5AAA1A1AAA — Watlow F4T Digital PID Controller, 24-28v ACDC, 1 Control Loop, Basic Function Blocks

Watlow

Watlow F4T Digital PID Controller, 24-28v ACDC, 1 Control Loop, Basic Function Blocks

SKU: F4T1A5AAA1A1AAA

Stock confirmed at order — usually ships from stock

$1,153.35

F4T1A5AAA1A2AAA — Watlow F4T Digital PID Controller, 24-28v ACDC, 2 Control Loops, Basic Function Blocks

Watlow

Watlow F4T Digital PID Controller, 24-28v ACDC, 2 Control Loops, Basic Function Blocks

SKU: F4T1A5AAA1A2AAA

Stock confirmed at order — usually ships from stock

$1,307.50

F4T1A5AAA1A4AAA — Watlow F4T Digital PID Controller, 24-28v ACDC, 4 Control Loops, Basic Function Blocks

Watlow

Watlow F4T Digital PID Controller, 24-28v ACDC, 4 Control Loops, Basic Function Blocks

SKU: F4T1A5AAA1A4AAA

Stock confirmed at order — usually ships from stock

$1,615.81

F4T1A5DAA1A1AAA — Watlow F4T Digital PID Controller, 24-28v ACDC, 1 Control Loop, 40 Profiles

Watlow

Watlow F4T Digital PID Controller, 24-28v ACDC, 1 Control Loop, 40 Profiles

SKU: F4T1A5DAA1A1AAA

Stock confirmed at order — usually ships from stock

$1,398.60

F4T1A5DAA1A2AAA — Watlow F4T Digital PID Controller, 24-28v ACDC, 2 Control Loops, 40 Profiles

Watlow

Watlow F4T Digital PID Controller, 24-28v ACDC, 2 Control Loops, 40 Profiles

SKU: F4T1A5DAA1A2AAA

Stock confirmed at order — usually ships from stock

$1,552.75

F4T1A5DAA1A4AAA — Watlow F4T Digital PID Controller, 24-28v ACDC, 4 Control Loops, 40 Profiles

Watlow

Watlow F4T Digital PID Controller, 24-28v ACDC, 4 Control Loops, 40 Profiles

SKU: F4T1A5DAA1A4AAA

Stock confirmed at order — usually ships from stock

$1,861.06

F4T1L1AAA1A1AAA — Watlow F4T Digital PID Controller, 100-240v AC, 1 Control Loop, Data Logging

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 1 Control Loop, Data Logging

SKU: F4T1L1AAA1A1AAA

Stock confirmed at order — usually ships from stock

$1,776.97

F4T1L1AAA1A2AAA — Watlow F4T Digital PID Controller, 100-240v AC, 2 Control Loops, Data Logging

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 2 Control Loops, Data Logging

SKU: F4T1L1AAA1A2AAA

Stock confirmed at order — usually ships from stock

$1,931.13

F4T1L1AAA1A4AAA — Watlow F4T Digital PID Controller, 100-240v AC, 4 Control Loops,Data Logging

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 4 Control Loops,Data Logging

SKU: F4T1L1AAA1A4AAA

Stock confirmed at order — usually ships from stock

$2,239.44

F4T1L1DAA1A1AAA — Watlow F4T Digital PID Controller, 100-240v AC, 1 Control Loop, Data Logging

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 1 Control Loop, Data Logging

SKU: F4T1L1DAA1A1AAA

Stock confirmed at order — usually ships from stock

$2,022.22

F4T1L1DAA1A2AAA — Watlow F4T Digital PID Controller, 100-240v AC, 2 Control Loops, 40 Profiles

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 2 Control Loops, 40 Profiles

SKU: F4T1L1DAA1A2AAA

Stock confirmed at order — usually ships from stock

$2,176.37

F4T1L1DAA1A4AAA — Watlow F4T Digital PID Controller, 100-240v AC, 4 Control Loops, 40 Profiles

Watlow

Watlow F4T Digital PID Controller, 100-240v AC, 4 Control Loops, 40 Profiles

SKU: F4T1L1DAA1A4AAA

Stock confirmed at order — usually ships from stock

$2,484.68

F4T1L5AAA1A1AAA — Watlow F4T Digital PID Controller, 24-28v ACDC, 1 Control Loop, Data Logging

Watlow

Watlow F4T Digital PID Controller, 24-28v ACDC, 1 Control Loop, Data Logging

SKU: F4T1L5AAA1A1AAA

Stock confirmed at order — usually ships from stock

$1,847.04

F4T1L5AAA1A2AAA — Watlow F4T Digital PID Controller, 24-28v ACDC, 2 Control Loops,Data Logging

Watlow

Watlow F4T Digital PID Controller, 24-28v ACDC, 2 Control Loops,Data Logging

SKU: F4T1L5AAA1A2AAA

Stock confirmed at order — usually ships from stock

$2,001.20

F4T1L5DAA1A4AAA — Watlow F4T Digital PID Controller, 24-28v ACDC, 4 Control Loops, 40 Profiles

Watlow

Watlow F4T Digital PID Controller, 24-28v ACDC, 4 Control Loops, 40 Profiles

SKU: F4T1L5DAA1A4AAA

Stock confirmed at order — usually ships from stock

$2,554.75

PM3C1EA-AAAABAA — Watlow 1/32 DIN, Digital PID Controller, Relay Output, Universal Input, 100-240 VAC

Watlow

Watlow 1/32 DIN, Digital PID Controller, Relay Output, Universal Input, 100-240 VAC

SKU: PM3C1EA-AAAABAA

Stock confirmed at order — usually ships from stock

$316.25

PM3C1EJ-AAAABAA — Watlow 1/32 DIN, Digital PID Controller, Relay/Relay Output, Universal Input, 100-240 VAC

Watlow

Watlow 1/32 DIN, Digital PID Controller, Relay/Relay Output, Universal Input, 100-240 VAC

SKU: PM3C1EJ-AAAABAA

Stock confirmed at order — usually ships from stock

$357.32

PM3C1EK-AAAABAA — Watlow 1/32 DIN, Digital PID Controller, Relay/SSR Output, Universal Input, 100-240 VAC

Watlow

Watlow 1/32 DIN, Digital PID Controller, Relay/SSR Output, Universal Input, 100-240 VAC

SKU: PM3C1EK-AAAABAA

Stock confirmed at order — usually ships from stock

$350.48

PM3C1FA-AAAABAA — Watlow 1/32 DIN, Digital PID Controller, Universal Process Output, Universal Input, 100-240 VAC

Watlow

Watlow 1/32 DIN, Digital PID Controller, Universal Process Output, Universal Input, 100-240 VAC

SKU: PM3C1FA-AAAABAA

Stock confirmed at order — usually ships from stock

$329.95

PM3C1FJ-AAAABAA — Watlow 1/32 DIN, Digital PID Controller, Process/Relay Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/32 DIN, Digital PID Controller, Process/Relay Outputs, Universal Input, 100-240 VAC

SKU: PM3C1FJ-AAAABAA

Stock confirmed at order — usually ships from stock

$371.02

PM3C1FK-AAAABAA — Watlow 1/32 DIN, Digital PID Controller, Process/SSR Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/32 DIN, Digital PID Controller, Process/SSR Outputs, Universal Input, 100-240 VAC

SKU: PM3C1FK-AAAABAA

Stock confirmed at order — usually ships from stock

$364.17

PM3C1KK-AAAABAA — Watlow 1/32 DIN, Digital PID Controller, SSR/SSR Outputs, Universal Input, 100-240 VAC

Watlow

Watlow 1/32 DIN, Digital PID Controller, SSR/SSR Outputs, Universal Input, 100-240 VAC

SKU: PM3C1KK-AAAABAA

Stock confirmed at order — usually ships from stock

$343.63

PM4C1EA-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 1 Relay Output, Universal Input, 100-240 VAC

Watlow

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

SKU: PM4C1EA-AAAAAAA

Stock confirmed at order — usually ships from stock

$504.50

PM4C1EH-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: PM4C1EH-1AAAAAA

Stock confirmed at order — usually ships from stock

$658.12

PM4C1EH-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: PM4C1EH-1AEJAAA

Stock confirmed at order — usually ships from stock

$755.14

PM4C1EH-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: PM4C1EH-1LEJAAA

Stock confirmed at order — usually ships from stock

$852.16

PM4C1EH-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: PM4C1EH-3AAAAAA

Stock confirmed at order — usually ships from stock

$803.65

PM4C1EH-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: PM4C1EH-6AAAAAA

Stock confirmed at order — usually ships from stock

$876.41

PM4C1EH-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: PM4C1EH-AAAAAAA

Stock confirmed at order — usually ships from stock

$561.10

PM4C1EH-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: PM4C1EH-AAEJAAA

Stock confirmed at order — usually ships from stock

$658.12

PM4C1EH-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: PM4C1EH-ALEJAAA

Stock confirmed at order — usually ships from stock

$755.14

PM4C1EJ-1AAAAAA — Watlow 1/4 DIN, Controller, 2 relay Outputs, Universal Input, 485 Modbus, 100-240 VAC

Watlow

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

SKU: PM4C1EJ-1AAAAAA

Stock confirmed at order — usually ships from stock

$650.03

PM4C1EJ-1AEJAAA — Watlow 1/4 DIN, Controller, 4 relay Outputs, Universal Input, 485 Modbus, 100-240 VAC

Watlow

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

SKU: PM4C1EJ-1AEJAAA

Stock confirmed at order — usually ships from stock

$747.05

PM4C1EJ-1LEJAAA — Watlow 1/4 DIN, Controller/Limit, 4 relay Outputs, Universal Input, 485 MODBUS, 100-240 VAC

Watlow

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

SKU: PM4C1EJ-1LEJAAA

Stock confirmed at order — usually ships from stock

$844.07

PM4C1EJ-3AAAAAA — Watlow 1/4 DIN, Controller, 2 relay Outputs, Universal Input, EtherNet/IP, 100-240 VAC

Watlow

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

SKU: PM4C1EJ-3AAAAAA

Stock confirmed at order — usually ships from stock

$795.56

PM4C1EJ-6AAAAAA — Watlow 1/4 DIN, Controller, 2 relay Outputs, Universal Input, PROFIBUS DP, 100-240 VAC

Watlow

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

SKU: PM4C1EJ-6AAAAAA

Stock confirmed at order — usually ships from stock

$868.33

PM4C1EJ-AAAAAAA — Watlow 1/4 DIN, Digital PID Controller, 2 relay Outputs, Universal Input, 100-240 VAC

Watlow

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

SKU: PM4C1EJ-AAAAAAA

Stock confirmed at order — usually ships from stock

$553.01

PM4C1EJ-AAEAAAA — Watlow 1/4 DIN, Digital PID Controller, 3 relay Outputs, Universal Input, 100-240 VAC

Watlow

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

SKU: PM4C1EJ-AAEAAAA

Stock confirmed at order — usually ships from stock

$601.52

PM4C1EJ-AAECAAA — 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: PM4C1EJ-AAECAAA

Stock confirmed at order — usually ships from stock

$641.95

PM4C1EJ-AAEJAAA — Watlow 1/4 DIN, Digital PID Controller, 4 relay Outputs, Universal Input, 100-240 VAC

Watlow

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

SKU: PM4C1EJ-AAEJAAA

Stock confirmed at order — usually ships from stock

$650.03

PM4C1EJ-AAEKAAA — 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: PM4C1EJ-AAEKAAA

Stock confirmed at order — usually ships from stock

$641.95

PM4C1EJ-ALEJAAA — Watlow 1/4 DIN, Digital PID Controller/Limit, 4 relay Outputs, Universal Input, 100-240 VAC

Watlow

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

SKU: PM4C1EJ-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.