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📡 Category

Sensors & Switches

Pressure, temperature, proximity, photoelectric, and level switches and transducers for monitoring and control.

Anderson-Bolds carries pressure, temperature, and level switches and transducers from Barksdale, United Electric, Robertshaw, and Ronan, plus proximity and photoelectric sensors from Autonics and Carlo Gavazzi. We match the range, output (SPDT/4-20mA), and enclosure rating to the application.

📡Not sure which to pick? Use the Pressure Switch Selector (coming soon)Pick a set point, deadband, and output for your pressure switch.→
Fenwal Well 11201-0 for 170XX Thermoswitches, Hex Head with 3/4 inch fitting
Fenwal

Fenwal Well 11201-0 for 170XX Thermoswitches, Hex Head with 3/4 inch fitting

SKU: 11201-0
Stock confirmed at order — usually ships from stock
$295.90
Fenwal Well 11204-0 for 170XX Thermoswitches.
Fenwal

Fenwal Well 11204-0 for 170XX Thermoswitches.

SKU: 11204-0
Stock confirmed at order — usually ships from stock
$418.00
Fenwal Well 11208-0 for 172XX/173XX Thermoswitches, Hex Head with 3/4 inch fitting.
Fenwal

Fenwal Well 11208-0 for 172XX/173XX Thermoswitches, Hex Head with 3/4 inch fitting.

SKU: 11208-0
Stock confirmed at order — usually ships from stock
$616.00
Fenwal Thermoswitch 17000-0 is OBSOLETE, use P/N 17002-0
Fenwal

Fenwal Thermoswitch 17000-0 is OBSOLETE, use P/N 17002-0

SKU: 17000-0
Stock confirmed at order — usually ships from stock
$275.00
Fenwal Thermoswitch 17002-0, -100-600 deg F, Stainless Steel, open on rise
Fenwal

Fenwal Thermoswitch 17002-0, -100-600 deg F, Stainless Steel, open on rise

SKU: 17002-0
Stock confirmed at order — usually ships from stock
$240.90
Fenwal Thermoswitch 17021-0 is OBSOLETE, use P/N 17023-0
Fenwal

Fenwal Thermoswitch 17021-0 is OBSOLETE, use P/N 17023-0

SKU: 17021-0
Stock confirmed at order — usually ships from stock
$275.00
Fenwal Thermoswitch 17023-0, -100-600 deg F, Stainless Steel, close on rise
Fenwal

Fenwal Thermoswitch 17023-0, -100-600 deg F, Stainless Steel, close on rise

SKU: 17023-0
Stock confirmed at order — usually ships from stock
$280.50
Fenwal Thermoswitch 17100-0 is OBSOLETE, use P/N 17102-0
Fenwal

Fenwal Thermoswitch 17100-0 is OBSOLETE, use P/N 17102-0

SKU: 17100-0
Stock confirmed at order — usually ships from stock
$330.00
Fenwal Thermoswitch 17102-0, -100-600 deg F, Stainless Steel, hex head, open on rise
Fenwal

Fenwal Thermoswitch 17102-0, -100-600 deg F, Stainless Steel, hex head, open on rise

SKU: 17102-0
Stock confirmed at order — usually ships from stock
$302.50
Fenwal Thermoswitch 17121-0 is OBSOLETE, use P/N 17123-0
Fenwal

Fenwal Thermoswitch 17121-0 is OBSOLETE, use P/N 17123-0

SKU: 17121-0
Stock confirmed at order — usually ships from stock
$330.00
Fenwal Thermoswitch 17123-0, -100-600 deg F, Stainless Steel, hex head, close on rise
Fenwal

Fenwal Thermoswitch 17123-0, -100-600 deg F, Stainless Steel, hex head, close on rise

SKU: 17123-0
Stock confirmed at order — usually ships from stock
$302.50
Fenwal Thermoswitch 17200-0 is OBSOLETE, use P/N 17202-0
Fenwal

Fenwal Thermoswitch 17200-0 is OBSOLETE, use P/N 17202-0

SKU: 17200-0
Stock confirmed at order — usually ships from stock
$330.00
Fenwal Thermoswitch 17202-0, -100-600 deg F, Stainless Steel, block head, open on rise
Fenwal

Fenwal Thermoswitch 17202-0, -100-600 deg F, Stainless Steel, block head, open on rise

SKU: 17202-0
Stock confirmed at order — usually ships from stock
$302.50
Fenwal Thermoswitch 17221-0 is OBSOLETE, use P/N 17223-0
Fenwal

Fenwal Thermoswitch 17221-0 is OBSOLETE, use P/N 17223-0

SKU: 17221-0
Stock confirmed at order — usually ships from stock
$330.00
Fenwal Thermoswitch 17223-0, -100-600 deg F, Stainless Steel, block head, close on rise
Fenwal

Fenwal Thermoswitch 17223-0, -100-600 deg F, Stainless Steel, block head, close on rise

SKU: 17223-0
Stock confirmed at order — usually ships from stock
$302.50
Fenwal Thermoswitch 17300-0 is OBSOLETE, use P/N 17302-0
Fenwal

Fenwal Thermoswitch 17300-0 is OBSOLETE, use P/N 17302-0

SKU: 17300-0
Stock confirmed at order — usually ships from stock
$357.50
Fenwal Thermoswitch 17302-0, -100-600 deg F, Stainless Steel, Flange Head, open on rise
Fenwal

Fenwal Thermoswitch 17302-0, -100-600 deg F, Stainless Steel, Flange Head, open on rise

SKU: 17302-0
Stock confirmed at order — usually ships from stock
$302.50
Fenwal Thermoswitch 17321-0 is OBSOLETE, use P/N 17323-0
Fenwal

Fenwal Thermoswitch 17321-0 is OBSOLETE, use P/N 17323-0

SKU: 17321-0
Stock confirmed at order — usually ships from stock
$357.50
Fenwal Thermoswitch 17323-0, -100-600 deg F, Stainless Steel, Flange Head, close on rise
Fenwal

Fenwal Thermoswitch 17323-0, -100-600 deg F, Stainless Steel, Flange Head, close on rise

SKU: 17323-0
Stock confirmed at order — usually ships from stock
$341.00
Fenwal Thermoswitch 17800-0 is OBSOLETE, use P/N 17802-0
Fenwal

Fenwal Thermoswitch 17800-0 is OBSOLETE, use P/N 17802-0

SKU: 17800-0
Stock confirmed at order — usually ships from stock
$610.50
Fenwal Thermoswitch 17802-0, -100-600 deg F, Stainless Steel, Junction Box Immersion, open on rise
Fenwal

Fenwal Thermoswitch 17802-0, -100-600 deg F, Stainless Steel, Junction Box Immersion, open on rise

SKU: 17802-0
Stock confirmed at order — usually ships from stock
$456.50
Fenwal Thermoswitch 17821-0 is OBSOLETE, use P/N 17823-0
Fenwal

Fenwal Thermoswitch 17821-0 is OBSOLETE, use P/N 17823-0

SKU: 17821-0
Stock confirmed at order — usually ships from stock
$610.50
Fenwal Thermoswitch 17823-0, -100-600 deg F, Stainless Steel, Junction Box Immersion, close on rise
Fenwal

Fenwal Thermoswitch 17823-0, -100-600 deg F, Stainless Steel, Junction Box Immersion, close on rise

SKU: 17823-0
Stock confirmed at order — usually ships from stock
$489.50
Fenwal Thermoswitch 18000-0 is OBSOLETE, use P/N 18002-0
Fenwal

Fenwal Thermoswitch 18000-0 is OBSOLETE, use P/N 18002-0

SKU: 18000-0
Stock confirmed at order — usually ships from stock
$330.00
Fenwal Thermoswitch 18002-0, -100-600 deg F, Stainless Steel, Coupling Head, open on rise
Fenwal

Fenwal Thermoswitch 18002-0, -100-600 deg F, Stainless Steel, Coupling Head, open on rise

SKU: 18002-0
Stock confirmed at order — usually ships from stock
$313.50
Fenwal Thermoswitch 18002-21, -100-600 deg F, 316 Stainless Steel, Coupling Head, open on rise
Fenwal

Fenwal Thermoswitch 18002-21, -100-600 deg F, 316 Stainless Steel, Coupling Head, open on rise

SKU: 18002-21
Stock confirmed at order — usually ships from stock
$346.50
Fenwal Thermoswitch 18021-0 is OBSOLETE, use P/N 18023-0
Fenwal

Fenwal Thermoswitch 18021-0 is OBSOLETE, use P/N 18023-0

SKU: 18021-0
Stock confirmed at order — usually ships from stock
$330.00
Fenwal Thermoswitch 18023-0, -100-600 deg F, Stainless Steel, Coupling Head, close on rise
Fenwal

Fenwal Thermoswitch 18023-0, -100-600 deg F, Stainless Steel, Coupling Head, close on rise

SKU: 18023-0
Stock confirmed at order — usually ships from stock
$313.50
Fenwal Thermoswitch 18023-7, -100-600 deg F, Stainless Steel, Coupling Head, close on rise
Fenwal

Fenwal Thermoswitch 18023-7, -100-600 deg F, Stainless Steel, Coupling Head, close on rise

SKU: 18023-7
Stock confirmed at order — usually ships from stock
$346.50
27020-000-140 — Fenwal DETECT-A-FIRE 27020, 140 deg F, Horizontal Flush Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 140 deg F, Horizontal Flush Mount, NC

SKU: 27020-000-140
Stock confirmed at order — usually ships from stock
$347.88
27020-000-160 — Fenwal DETECT-A-FIRE 27020, 160 deg F, Horizontal Flush Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 160 deg F, Horizontal Flush Mount, NC

SKU: 27020-000-160
Stock confirmed at order — usually ships from stock
$347.88
27020-000-190 — Fenwal DETECT-A-FIRE 27020, 190 deg F, Horizontal Flush Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 190 deg F, Horizontal Flush Mount, NC

SKU: 27020-000-190
Stock confirmed at order — usually ships from stock
$347.88
27020-000-210 — Fenwal DETECT-A-FIRE 27020, 210 deg F, Horizontal Flush Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 210 deg F, Horizontal Flush Mount, NC

SKU: 27020-000-210
Stock confirmed at order — usually ships from stock
$347.88
27020-000-225 — Fenwal DETECT-A-FIRE 27020, 225 deg F, Horizontal Flush Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 225 deg F, Horizontal Flush Mount, NC

SKU: 27020-000-225
Stock confirmed at order — usually ships from stock
$347.88
27020-000-275 — Fenwal DETECT-A-FIRE 27020, 275 deg F, Horizontal Flush Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 275 deg F, Horizontal Flush Mount, NC

SKU: 27020-000-275
Stock confirmed at order — usually ships from stock
$354.20
27020-000-325 — Fenwal DETECT-A-FIRE 27020, 325 deg F, Horizontal Flush Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 325 deg F, Horizontal Flush Mount, NC

SKU: 27020-000-325
Stock confirmed at order — usually ships from stock
$354.20
27020-001-140 — Fenwal DETECT-A-FIRE 27020, 140 deg F, Horizontal Surface Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 140 deg F, Horizontal Surface Mount, NC

SKU: 27020-001-140
Stock confirmed at order — usually ships from stock
$347.88
27020-001-160 — Fenwal DETECT-A-FIRE 27020, 160 deg F, Horizontal Surface Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 160 deg F, Horizontal Surface Mount, NC

SKU: 27020-001-160
Stock confirmed at order — usually ships from stock
$347.88
27020-001-190 — Fenwal DETECT-A-FIRE 27020, 190 deg F, Horizontal Surface Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 190 deg F, Horizontal Surface Mount, NC

SKU: 27020-001-190
Stock confirmed at order — usually ships from stock
$347.88
27020-001-210 — Fenwal DETECT-A-FIRE 27020, 210 deg F, Horizontal Surface Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 210 deg F, Horizontal Surface Mount, NC

SKU: 27020-001-210
Stock confirmed at order — usually ships from stock
$347.88
27020-001-225 — Fenwal DETECT-A-FIRE 27020, 225 deg F, Horizontal Surface Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 225 deg F, Horizontal Surface Mount, NC

SKU: 27020-001-225
Stock confirmed at order — usually ships from stock
$347.88
27020-001-275 — Fenwal DETECT-A-FIRE 27020, 275 deg F, Horizontal Surface Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 275 deg F, Horizontal Surface Mount, NC

SKU: 27020-001-275
Stock confirmed at order — usually ships from stock
$354.20
27020-001-325 — Fenwal DETECT-A-FIRE 27020, 325 deg F, Horizontal Surface Mount, NC
Fenwal

Fenwal DETECT-A-FIRE 27020, 325 deg F, Horizontal Surface Mount, NC

SKU: 27020-001-325
Stock confirmed at order — usually ships from stock
$354.20
27021-000-140 — Fenwal DETECT-A-FIRE 27021, 140 deg F, Horizontal Flush Mount, NO
Fenwal

Fenwal DETECT-A-FIRE 27021, 140 deg F, Horizontal Flush Mount, NO

SKU: 27021-000-140
Stock confirmed at order — usually ships from stock
$347.88
27021-000-160 — Fenwal DETECT-A-FIRE 27021, 160 deg F, Horizontal Flush Mount, NO
Fenwal

Fenwal DETECT-A-FIRE 27021, 160 deg F, Horizontal Flush Mount, NO

SKU: 27021-000-160
Stock confirmed at order — usually ships from stock
$347.88
27021-000-190 — Fenwal DETECT-A-FIRE 27021, 190 deg F, Horizontal Flush Mount, NO
Fenwal

Fenwal DETECT-A-FIRE 27021, 190 deg F, Horizontal Flush Mount, NO

SKU: 27021-000-190
Stock confirmed at order — usually ships from stock
$347.88
27021-000-210 — Fenwal DETECT-A-FIRE 27021, 210 deg F, Horizontal Flush Mount, NO
Fenwal

Fenwal DETECT-A-FIRE 27021, 210 deg F, Horizontal Flush Mount, NO

SKU: 27021-000-210
Stock confirmed at order — usually ships from stock
$347.88
27021-000-225 — Fenwal DETECT-A-FIRE 27020, 225 deg F, Horizontal Flush Mount, NO
Fenwal

Fenwal DETECT-A-FIRE 27020, 225 deg F, Horizontal Flush Mount, NO

SKU: 27021-000-225
Stock confirmed at order — usually ships from stock
$347.88
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Brands in Sensors & Switches

Sensors & Switches — questions buyers ask

What is the difference between a pressure switch and a transducer?

A pressure switch trips a contact at a set point (on/off). A transducer outputs a continuous signal (e.g. 4-20 mA) proportional to pressure for a controller or PLC to read.