🎛️ Category
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.
Watlow
Watlow 1/8 DIN, Digital Limit Controller, 2 relay Outputs, Universal Input, 100-240 VAC
SKU: PM8L1EJ-AAAAAAA
Stock confirmed at order — usually ships from stock
$499.25
Watlow
Watlow 1/8 DIN, Limit Controller, 1 Relay Output, Universal Input, 485 Modbus, 24v AC/DC
SKU: PM8L3AJ-1AAAAAA
Stock confirmed at order — usually ships from stock
$604.26
Watlow
Watlow 1/8 DIN, Digital Limit Controller, 1 Relay Output, Universal Input, 24v AC/DC
SKU: PM8L3AJ-AAAAAAA
Stock confirmed at order — usually ships from stock
$507.32
Watlow
Watlow 1/8 DIN, Limit Controller, 2 Outputs, Universal Input, 485 Modbus, 24v AC/DC
SKU: PM8L3CJ-1AAAAAA
Stock confirmed at order — usually ships from stock
$644.66
Watlow
Watlow 1/8 DIN, Digital Limit Controller, 2 Outputs, Universal Input, 24v AC/DC
SKU: PM8L3CJ-AAAAAAA
Stock confirmed at order — usually ships from stock
$547.71
Watlow
Watlow 1/8 DIN, Limit Controller, 2 relay Outputs, Universal Input, 485 Modbus, 24v AC/DC
SKU: PM8L3EJ-1AAAAAA
Stock confirmed at order — usually ships from stock
$652.74
Watlow
Watlow 1/8 DIN, Digital Limit Controller, 2 relay Outputs, Universal Input, 24v AC/DC
SKU: PM8L3EJ-AAAAAAA
Stock confirmed at order — usually ships from stock
$555.80
Watlow
Watlow 1/8 DIN, Digital Limit Controller, 2 relay Outputs, Thermistor Input, 100-240 VAC
SKU: PM8M1EJ-AAAAAAA
Stock confirmed at order — usually ships from stock
$499.25
Watlow
Watlow 1/8 DIN, Digital Limit Controller, 2 relay Outputs, Thermistor Input, 24v AC/DC
SKU: PM8M3EJ-AAAAAAA
Stock confirmed at order — usually ships from stock
$499.25
Watlow
Watlow ST, LIMIT AND PID Controller, 4 Outputs (40amp/10amp) 2 Universal Inputs, 24 VAC
SKU: STCL-B1AB-AAAA
Stock confirmed at order — usually ships from stock
$867.63
Watlow
Watlow ST, LIMIT AND PID Controller, 4 Outputs (40amp/10amp), 2 Universal Inputs, 110/120 VAC
SKU: STCL-B2AB-AAAA
Stock confirmed at order — usually ships from stock
$811.07
Watlow
Watlow ST, LIMIT AND PID Controller, 4 Outputs (40amp/10amp), 2 Universal Inputs, 208/240 VAC
SKU: STCL-B3AB-AAAA
Stock confirmed at order — usually ships from stock
$811.07
Watlow
Watlow ST, LIMIT AND PID Controller, 4 Outputs (40amp/25amp) 2 Universal Inputs, 24 VAC
SKU: STCL-F1AC-AAAA
Stock confirmed at order — usually ships from stock
$875.70
Watlow
Watlow ST, LIMIT AND PID Controller, 4 Outputs (40amp/25amp), 2 Universal Inputs, 110/120 VAC
SKU: STCL-F2AC-AAAA
Stock confirmed at order — usually ships from stock
$819.15
Watlow
Watlow ST, LIMIT AND PID Controller, 4 Outputs (40amp/25amp), 2 Universal Inputs, 208/240 VAC
SKU: STCL-F3AC-AAAA
Stock confirmed at order — usually ships from stock
$819.15
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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.