BD923 Large Display Commercial Thermometer with Waterproof Probe

Product Overview

The BD923 Big Digit Thermometer is a large display commercial thermometer designed for applications where temperature must be monitored accurately and read from a distance. Its jumbo illuminated red numbers stand 3 inches tall on a 5.5 x 9.5 inch screen — visible from 75 feet or more — making it an ideal remote temperature monitoring solution for warehouses, walk-in coolers, food service operations, labs, and industrial environments.

Built into a rugged aluminum housing, the BD923 is powered by a standard USB wall adapter (included) and can also run on an optional external rechargeable battery for 3 to 5 days of uninterrupted use — ideal for locations where outlet access is limited.

The included immersion waterproof probe monitors liquid or air temperatures from -40°F to 248°F (-40°C to 120°C) with accuracy of +/- 2°F. Custom calibration is available for higher accuracy over a limited range. Probe cord lengths from 18 ft. up to 100 ft. are available — select your length above.

User-settable high and low temperature alarms alert you with an audible beep and a flashing display when temperatures move outside your target range. The alarm resets automatically once the temperature returns to normal — no manual reset needed.

Important Notes:

• The probe and sensor are waterproof; the display unit is not — protect the display from moisture.
• Not recommended for direct sunlight or unshaded outdoor use, as this reduces display visibility.
• Extending the power cord beyond its stock length voids the warranty against power-related issues.

Specifications

• Display: 3" tall numbers on a 5.5 x 9.5 in. screen
• Housing: Rugged aluminum with acrylic plastic lens
• Power: USB (5VDC, 1000mA adapter included); optional rechargeable battery available
• Temperature Range: -40°F to 248°F / -40°C to 120°C
• Accuracy: +/- 2°F (+/- 1°C)
• User Calibration Range: +/- 20°C
• Visibility: 75+ feet
• Probe Cord: 18 ft. standard (30–100 ft. options available)
• Sensor Tip Length: 1.17" (30 mm)
• Sensor Diameter (widest): 0.37" (9.5 mm)
• Sensor Diameter (SS tip): 0.24" (6 mm)
• Power Cord Length: 4.6 ft.
• Case Dimensions: 9.7"L x 5.36"H x 0.95"D
• Wall Mounting: Loops ~5" apart; hang from nails/hooks or screw-mount
• Temperature Scale: F/C selectable
• Alarms: Audible + visual (high and low, user-settable; auto-reset)

Applications & Industries

The BD923 is a proven solution wherever accurate, highly visible temperature monitoring is needed — from food service and refrigeration to labs, agriculture, and industrial settings.

Bakeries, Beer & Beverage Coolers, Computer & Server Rooms, Composting, Construction, Correctional Facilities, Dairies, Food Pantries, Food Preparation Hot/Cold Tables, Greenhouses, Hatcheries, Home Use, Hot Tubs & Spas, Hydroponics, Ice Baths, Labs, Logistics, Meat Packing, Museums, Oil & Gas, Painting, Pet Food Manufacturing, Product Packaging, Pubs & Bars, Refrigerated Freight, Refrigeration, Saunas, Seafood, Snow Melters, Supermarkets, Swimming Pools, Warehouses, and Wood Drying.

Manual & Support

Download the BD923 Instruction Manual

Need help with calibration, a replacement probe, or a repair? We can recalibrate and service the BD923 at our facility in Elizabeth, CO. Contact us at info@techinstrument.com or call (800) 390-0004.

Frequently Asked Questions

How far away can the BD923 display be read?
The BD923 is designed to be clearly visible from 75 feet or more under normal indoor lighting conditions. Its 3-inch illuminated red numbers are bright enough to monitor from across a warehouse, production floor, or large cooler.

Is the BD923 waterproof?
The immersion probe and sensor are waterproof and can be submerged in liquids. The display unit itself is not waterproof and must be kept dry and protected from moisture at all times.

Can the BD923 run without being plugged in?
Yes. While the BD923 comes with a USB wall adapter for standard operation, an optional external rechargeable battery is available that provides 3 to 5 days of continuous use without being plugged in.

What probe cord lengths are available?
The BD923 comes standard with an 18 ft. probe cord. Extended lengths of 30, 40, 50, 60, 70, 80, 90, and 100 feet are available and can be selected at the time of purchase.

Can the BD923 be used outdoors?
The BD923 is not recommended for use in direct sunlight or unprotected outdoor environments, as sunlight significantly reduces display visibility. It can be used outdoors when shaded or enclosed in a weatherproof housing.

Does the BD923 have temperature alarms?
Yes. The BD923 features user-settable high and low temperature alarms. When triggered, the unit beeps and the display flashes. The alarm resets automatically when the temperature returns to the normal range — no manual reset is required.

What temperature range does the BD923 cover?
The BD923 measures temperatures from -40°F to 248°F (-40°C to 120°C) with an accuracy of +/- 2°F (+/- 1°C). It can be custom calibrated for higher accuracy over a more limited range.

Can the BD923 be wall mounted?
Yes. The aluminum housing includes wall mounting loops spaced approximately 5 inches apart. The unit can be hung from nails or hooks, or screwed directly into a wall.

What is the warranty on the BD923?
The BD923 comes with a one-year warranty against manufacturing defects. The probe also carries a one-year warranty. Tech Instrumentation can service and recalibrate the unit at our facility in Elizabeth, CO.

Can the probe be replaced?
Yes. A replacement probe (model BD923PR) is available. Note that the thermometer will need to be recalibrated after a probe replacement. Tech Instrumentation can perform the replacement and recalibration for you.