Digital Thermostat 8820 with PTC Sensor – Temperature Controller -50°C to +150°C

8820 Digital Thermostat (PTC) – At a Glance

• Replaces Eliwell ID & capillary thermostats – one controller for multiple applications.

• Wide temperature range: -50°C to +150°C (Heating & Cooling).

• Strong relay: Built-in 20A mains relay – no need for an extra contactor.

• Clear display: Digital readout of the actual temperature, unlike capillary dials.

• IP65 protection: Suitable where water is present, and wipeable when cleaning.

• Easy install: Compact size (33 x 75mm front, 29 x 71mm cutout).

• Ready to fit: 220VAC supply, supplied with a 3.5m PTC sensor, 2 relay outputs.

The Digital Thermostat 8820 (PTC) from Under Control Instruments is a high-specification temperature controller designed for accurate and reliable heating or cooling control. Compact in size (33 x 75mm front, 29 x 71mm cutout), it features a single digital display with easy-to-use ON/OFF control, running on a 220VAC supply and supplied with a 3.5m PTC sensor.

The 8820 monitors and regulates temperatures across a wide -50°C to +150°C range, making it suitable for both heating and refrigeration applications. A powerful 20A mains relay output is built in as standard, with 2 relay outputs in total, eliminating the need for an additional contactor or relay switch and reducing both cost and installation space.

With its IP65-rated front panel, the 8820 is protected against moisture ingress where water is present, and can simply be wiped clean, making it highly suited for use in commercial kitchens, food preparation areas and refrigeration systems.

Digital temperature controllers like the 8820 are a direct replacement for traditional capillary thermostats, providing more accurate control with a clear display of the actual temperature. The 8820 can also replace controllers in the Eliwell ID range.

Key Features

• Digital ON/OFF Control: Accurate, reliable switching for heating and cooling applications

• Temperature Range: -50°C to +150°C

• Compact Size: 33 x 75mm front panel, 29 x 71mm cutout

• PTC Sensor: Supplied with a 3.5m PTC sensor

• Relay Outputs: 2 relay outputs, including a built-in 20A mains relay – no external contactor required

• Supply Voltage: 220VAC

• IP65 Front Panel: Protected against moisture ingress and wipeable when cleaning

• Clear Digital Display: Shows the actual temperature at a glance

• Direct Replacement: Replaces capillary thermostats and Eliwell ID controllers

Specification

Typical Applications

• Commercial and industrial refrigeration

• Catering equipment

• Heating and cooling systems

• Applications controlling temperatures from -50°C to +150°C

The Digital Thermostat 8820 (PTC) offers accurate, reliable temperature control with a clear digital display — a straightforward upgrade from capillary thermostats and Eliwell ID controllers.