Fixed 40°F Temperature Thermostat

The 42001-NEL thermostat is ideal for applications where freeze protection or lowerrange temperature control is critical. In cold climates the thermostat switches heating devices that prevent pipes, valves, tanks and fittings from freezing.

This thermostat can be used in ambient-sensing applications by placing the sensor in the air or as a line-sensing thermostat by securing the bulb to the pipe or tank. It can be used as a single circuit control or as a pilot control for several circuits by switching a contact. Set point at factory is 40 degrees F (5C).

DS-223 Specifications

Enclosure Rating



One ¾ inch NPT conduit hub

Set Point

40 °F (5 °C) Close on decreasing temperature

Sensor exposure limits

-30 to 140 °F (-35 to 60 °C)

Enclosure material

Polycarbonate black


SPD, prewired snap action

Electrical rating

22 amp@ 125/250/480 VAC


±1% of full scale

Sensor & capillary type

Copper tin plated, Silicone oil filled bulb3.12” (79mm) .39” (10mm) diameter10’ (3.05m) long capillary


14 AWG stranded copper wire, PVC


CSA and UL Listed (Ordinary Areas)



Ordering Information

10 Foot Pig-Tail Power Cord w/Molded Plug
Product code: EPT-10

20 AMP 30mA GFCI Plug Kit
120VAC code: EGFI-120
240VAC code: EGFI-240


  • Automatic Activation means Lower Deicing Costs

  • Reliable Rain And Snow Detection

  • Full 30A @ 240VAC Control

  • Field Strap for 100-120/200-240 VAC Operation

  • Replaceable Remote Precipitation Sensor

  • Easy Installation, Full Access to Electronics

  • Safe Low Voltage Sensor Head

  • Adjustable Temperature Trigger Point

  • Adjustable Delay Off Cycle

  • Bright Off/On/Triggered LED Status Indicator

  • Smart “Manual On” Operates for One Delay Cycle