- About
- Description
- Specifications
- Features
- Downloads
- Shipping

Images are for illustration only and may not reflect the actual product. Refer to the description or specs.
Dwyer TCS-4021 Thermocouple Temperature Switch
Normally In Stock
Code: 571153
Dwyer TCS-4021 - Thermocouple temperature switch, type J/K/S Input, 230 V, °C.
Condition: New
Usually ships Same Day or Next Day$124.68
Sale Price
$103.90
Tariff Status
Tariff may apply if shipping to the United States. Tariff costs are calculated and will be displayed in the shopping cart.
Need a large quantity or a custom solution?
Add this product to your job, favorites list or request a quick quote for volume pricing and lead time information. Our team is ready to assist with any special requirements.
Description
Dwyer TCS-4021 is a thermocouple temperature switch designed for accurate temperature control in a range of environments. It has a temperature range of 32 to 158°F (0 to 70°C) for ambient temperature and -4 to 176°F (-20 to 80°C) for storage. With ±1% FS accuracy and a 1° resolution, it offers precise temperature monitoring. The switch has a variety of power requirements, including 115 VAC, 230 VAC, 12 VAC/VDC, or 24 VAC/VDC depending on the model. The output is a SPDT relay rated 16 A @ 240 VAC resistive, and the device features a 3-digit red display with nonvolatile memory. The front panel of the switch has an IP64 rating for protection against dust and water. It can be used with Type J or K thermocouples and has a probe range of 32 to 999°F (0 to 700°C) for Type J thermocouples and 32 to 999°F (0 to 999°C) for Type K or S thermocouples. The control type is ON/OFF, and the switch has a horsepower rating (HP) of 1 HP.
Specifications
(Instrument-Sensor) Supply Voltage
230 VAC
(Instrument-Sensor) Measurement Accuracy
1.0%
(Instrument-Sensor) Supply Voltage
115 VAC
(Instrument-Sensor) Temperature Range
Storage: -4 - 176°F/-20 - 80°C
(Instrument-Sensor) Supply Voltage
24 VAC/DC
(Instrument-Sensor) Supply Voltage
12 VAC/DC
(Instrument-Sensor) Temperature Range
Ambient: 32 - 158°F/0 - 70°C
Component
Thermocouple
Sub Component
Thermocouple Temperature Switch
Manufacturer
Dwyer Instruments
Features
Monitor and control temperature in heating and cooling applications with the Series TCS Thermocouple Switch
The Series TCS offers a wide temperature range, two selectable alarm sets, and an internal buzzer indicating alarm condition or error
The user can define set point, heating/cooling regulation, cycle time, alarm configuration, load status, and ambient probe adjustment
The thermocouple switch features password protection and error/alarm messaging
Temperature and output status is indicated on the bright red LED display
Use the configuration key (sold separately) to quickly program multiple units
The Series TCS includes a fitting clip for panel mounting, gasket, rear terminal cover and instruction manual.
Downloads

Code: 571153
Dwyer TCS-4021 Thermocouple Temperature Switch
$124.68
Sale Price
$103.90