The Miljoco-Weiss 24DT-L-4F1-N6U-03FT is a remote reading LED digital thermometer for commercial refrigeration. It reads -40 to 230°F on a bright LED display with a °F / °C switch, runs on 110 VAC, and uses a detachable 3 ft remote sensor.
Overview
The 24DT is the walk-in and cold room model of the Miljoco-Weiss LED line. Power and sensor land on separate fast-on spade terminals so the instrument can be pulled without disturbing the wiring, and the display update time is set at the factory to keep the reading steady through repeated door openings. This part number is the switch plate with lighted switch configuration on 110 VAC with a 3 ft detachable sensor.
Typical Applications
- Commercial refrigeration
- Walk-in coolers and freezers
- Food service equipment
- Other remote reading applications
Warranty
Miljoco-Weiss warrants this product to be free from material defects in material and workmanship for 12 months from date of shipment, per the published Miljoco-Weiss terms and conditions of sale. No product-specific warranty period is published in the documentation for this model, so the standard term applies.
Key Features
LED display with °F / °C switch
The temperature reads out on a bright LED display that switches between Fahrenheit and Celsius.
1 minute display update
This part is factory set for a 1 minute update. Slower update options exist across the 24DT range to stop the reading chasing itself every time a door opens.
Detachable sensor and power fast-ons
Sensor and supply connections are separate fast-on spade terminals, so the instrument drops out of the plate without cutting wire.
Illuminated walk-in light switch
The switch plate carries a waterproof elbow engaged illuminated switch rated 15 A, so an operator with full hands can turn the walk-in light on.
Optional battery back-up
An optional 9-volt battery harness keeps the temperature readable through a power outage.
UL and NSF listed
Listed for the commercial food service and refrigeration installations these units are specified into.
Technical Specifications
| Specification | Value |
|---|---|
| Measurement Range | -40 to 230°F (-40 to 110°C) |
| Display | LED temperature display with °F / °C switch |
| Accuracy | ±1° |
| Display Update | 1 minute |
| Power Supply | 110 VAC |
| Factory Set Display Scale | -40 to 230°F |
| Mounting | Switch plate with lighted switch |
| Light Switch | Industrial duty illuminated switch rated 15 A, waterproof elbow engaged, optional gasket for outdoor use |
| Sensor | NTC thermistor, 7 x 30 mm plastic sensor |
| Sensor Type | Detachable remote sensor |
| Sensor Lead Length | 3 ft |
| Battery Back-Up | Optional 9-volt battery harness (battery not included) |
| Electrical Terminations | Fast-on spade terminals: 0.250 in. for power supply, 0.110 in. for probe |
| Probe Insulation | Double insulated on 110 V and 230 V supply models |
| Alarm Messages | PO indicates open probe or switch closed; P1 indicates no probe connected |
| Installation | Panel mounting; electrical connections must sit inside a properly protected board or panel |
| Listings | UL and NSF listed |
Source Notes
Documentation
Related Products
Frequently Asked Questions
What supply voltage does this thermometer need?
This part is the 110 VAC version. The 24DT range is also built for 12 VAC/DC and 230 VAC supplies.
Does this include the walk-in light switch?
Yes. This is the switch plate version with the lighted switch, rated 15 A, with an optional gasket available for outdoor use.
How long is the sensor lead on this part number?
3 ft. The sensor is detachable and Miljoco-Weiss offers longer lead lengths on the 24DT.
Will it hold a reading during a power outage?
Only with the optional 9-volt battery harness fitted. The harness and battery are not included with the thermometer.
What do PO and P1 mean on the display?
PO indicates an open probe or a closed switch. P1 indicates no probe connected. Both are listed in the 24DT installation instructions.
Specifications from Miljoco-Weiss data sheet 24DT-01.24, the 24DT installation and operating instructions, and the published Miljoco-Weiss LED thermometer ordering matrix. Verified 2026-09-01.
Manufacturer Warranty
Miljoco-Weiss warrants this product to be free from material defects in material and workmanship for 12 months from date of shipment, per the published Miljoco-Weiss terms and conditions of sale.
Warranty service requires written notice of the defect within seven days of discovery. Remedy is repair, replacement or credit at the manufacturer's discretion. Normal wear, corrosion, misuse and unauthorized modification are excluded.
- Product Type:
- Digital Thermometer
- Display Type:
- LED
- Temperature Range:
- -40 to 230 F
- Power Supply:
- 110 VAC
- Mounting:
- Switch Plate with Lighted Switch
- Sensor Type:
- Remote Detachable
- Sensor Lead Length:
- 3 ft
- Display Update:
- 1-Minute
- Accuracy:
- Plus or minus 1 degree
- Listings:
- UL
- Listings:
- NSF
